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Winbond LPC Super IO W83L517D
W83L517D Data Sheet Revision History
Version on Web 1.0
Pages 1 2 3 4 5 6 7 8
Dates 2002/Jul.
Version 1.0
Main Contents First publication.
Please note that all data and specifications are subject to change without notice. All the trademarks of products and companies mentioned in this data sheet belong to their respective owners. LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Winbond customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Winbond for any damages resulting from such improper use or sales.
CONTENT
1 2 3 4 4.1 4.2 4.3 4.4 4.5 4.6 5 6 GENERAL DESCRIPTION ....................................................................................................... 1 FEATURES.............................................................................................................................2 PIN CONFIGURATION ............................................................................................................ 4 PIN DESCRIPTION .................................................................................................................5 LPC INTERFACE.....................................................................................................................5 FDC INTERFACE.....................................................................................................................6 MULTI-MODE PARALLEL PORT.................................................................................................. 7 SERIAL PORT INTERFACE AND INFRARED PORT............................................................................ 12 KBC AND FLASH ROM INTERFACE......................................................................................... 13 POWER PINS.................................................................................................................... 14 LPC (LOW PIN COUNT) INTERFACE..................................................................................... 15 FDC FUNCTIONAL DESCRIPTION ........................................................................................ 15
6.1 W83L517D FDC ................................................................................................................. 15 6.1.1 AT interface................................................................................................................ 15 6.1.2 FIFO (Data) ................................................................................................................ 15 6.1.3 Data Separator............................................................................................................ 16 6.1.4 Write Precompensation................................................................................................ 17 6.1.5 Perpendicular Recording Mode...................................................................................... 17 6.1.6 FDC Core ................................................................................................................... 17 6.1.7 FDC Commands.......................................................................................................... 17 6.2 REGISTER DESCRIPTIONS ........................................................................................................ 27 6.2.1 Status Register A (SA Register) (Read base address + 0) .............................................. 27 6.2.2 Status Register B (SB Register) (Read base address + 1) .............................................. 29 6.2.3 Digital Output Register (DO Register) (Write base address + 2)....................................... 31 6.2.4 Tape Drive Register (TD Register) (Read base address + 3) ............................................ 31 6.2.5 Main Status Register (MS Register) (Read base address + 4).......................................... 32 6.2.6 Data Rate Register (DR Register) (Write base address + 4) ............................................ 32 6.2.7 FIFO Register (R/W base address + 5) ......................................................................... 34 6.2.8 Digital Input Register (DI Register) (Read base address + 7) ........................................... 36 6.2.9 Configuration Control Register (CC Register) (Write base address + 7)............................. 37 7 UART PORT......................................................................................................................... 38
7.1 UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER (UART A).................................................... 38 7.2 REGISTER ADDRESS .............................................................................................................. 38 7.2.1 UART Control Register (UCR) (Read/Write).................................................................... 38 7.2.2 UART Status Register (USR) (Read/Write) .................................................................... 40 7.2.3 Handshake Control Register (HCR) (Read/Write) ............................................................ 41 7.2.4 Handshake Status Register (HSR) (Read/Write)............................................................. 42 7.2.5 UART FIFO Control Register (UFR) (Write only)............................................................. 43 7.2.6 Interrupt Status Register (ISR) (Read only) .................................................................... 44 7.2.7 Interrupt Control Register (ICR) (Read/Write).................................................................. 45 7.2.8 Programmable Baud Generator (BLL/BHL) (Read/Write) ................................................. 45 7.2.9 User-defined Register (UDR) (Read/Write) ..................................................................... 46 8 INFRARED (IR) PORT (FOR W83L517D ONLY) ...................................................................... 47
8.1 IR REGISTER DESCRIPTION ...................................................................................................... 47 8.2 SET0-LEGACY/ADVANCED IR CONTROL AND STATUS REGISTERS ................................................... 48 8.2.1 Set0.Reg0 - Receiver/Transmitter Buffer Registers (RBR/TBR) (Read/Write) .................... 48
W83L517D
8.2.2 Set0.Reg1 - Interrupt Control Register (ICR)................................................................... 49 8.2.3 Set0.Reg2 - Interrupt Status Register/IR FIFO Control Register (ISR/UFR)....................... 49 8.2.4 Set0.Reg3 - IR Control Register/Set Select Register (UCR/SSR): .................................... 53 8.2.5 Set0.Reg4 - Handshake Control Register (HCR)............................................................. 54 8.2.6 Set0.Reg5 - IR Status Register (USR) ........................................................................... 56 8.2.7 Set0.Reg6 - Reserved .................................................................................................. 56 8.3 SET1 - LEGACY BAUD RATE DIVISOR REGISTER .......................................................................... 58 8.3.1 Set1.Reg0~1 - Baud Rate Divisor Latch (BLL/BHL)......................................................... 58 8.3.2 Set1.Reg 2~7.............................................................................................................. 58 8.4 SET2 - INTERRUPT STATUS OR IR FIFO CONTROL REGISTER (ISR/UFR) .......................................... 59 8.4.1 Reg0, 1 - Advanced Baud Rate Divisor Latch (ABLL/ABHL)............................................. 59 8.4.2 Reg2 - Advanced IR Control Register 1 (ADCR1)............................................................ 59 8.4.3 Reg3 - Sets Select Register (SSR) ............................................................................... 60 8.4.4 Reg4 - Advanced IR Control Register 2 (ADCR2)............................................................ 60 8.4.5 Reg6 - Transmitter FIFO Depth (TXFDTH) (Read Only) ................................................... 62 8.4.6 Reg7 - Receiver FIFO Depth (RXFDTH) (Read Only)....................................................... 62 8.5 SET3 - VERSION ID AND MAPPED CONTROL REGISTERS................................................................. 62 8.5.1 Reg0 - Advanced IR ID (AUID)...................................................................................... 62 8.5.2 Reg1 - Mapped IR Control Register (MP_UCR) ............................................................... 63 8.5.3 Reg2 - Mapped IR FIFO Control Register (MP_UFR)....................................................... 63 8.5.4 Reg3 - Sets Select Register (SSR) ............................................................................... 63 8.6 SET4 - TX/RX/T IMER COUNTER REGISTERS AND IR CONTROL REGISTERS. ........................................... 63 8.6.1 Set4.Reg0, 1 - Timer Value Register (TMRL/TMRH)........................................................ 63 8.6.2 Set4.Reg2 - Infrared Mode Select (IR_MSL) ................................................................... 64 8.6.3 Set4.Reg3 - Set Select Register (SSR) ......................................................................... 64 8.6.4 Set4.Reg4, 5 - Transmitter Frame Length (TFRLL/TFRLH) .............................................. 64 8.6.5 Set4.Reg6, 7 - Receiver Frame Length (RFRLL/RFRLH).................................................. 65 8.7 SET 5 - FLOW CONTROL AND IR CONTROL AND FRAME STATUS FIFO REGISTERS ............................... 65 8.7.1 Set5.Reg0, 1 - Flow Control Baud Rate Divisor Latch Register (FCDLL/ FCDHL) ............... 65 8.7.2 Set5.Reg2 - Flow Control Mode Operation (FC_MD) ........................................................ 65 8.7.3 Set5.Reg3 - Sets Select Register (SSR)........................................................................ 66 8.7.4 Set5.Reg4 - Infrared Configure Register 1 (IRCFG1) ....................................................... 66 8.7.5 Set5.Reg5 - Frame Status FIFO Register (FS_FO)......................................................... 67 8.7.6 Set5.Reg6, 7 - Receiver Frame Length FIFO (RFLFL/RFLFH) or Lost Frame Number (LST_NU) 68 8.8 SET6 - IR PHYSICAL LAYER CONTROL REGISTERS ....................................................................... 68 8.8.1 Set6.Reg0 - Infrared Configure Register 2 (IR_CFG2) ..................................................... 68 8.8.2 Set6.Reg1 - MIR (1.152M/0.576M bps) Pulse Width ....................................................... 69 8.8.3 Set6.Reg2 - SIR Pulse Width....................................................................................... 69 8.8.4 Set6.Reg3 - Set Select Register ................................................................................... 70 8.8.5 Set6.Reg4 - High Speed Infrared Beginning Flag Number (HIR_FNU) .............................. 70 8.8.6 Set6.Reg5 - Winbond infrared ID Register 1.................................................................. 71 8.8.7 Set6.Reg6 - Winbond infrared ID Register 2.................................................................. 71 8.8.8 Set6.Reg7 - High Speed infrared ID Select Register...................................................... 71 8.9 SET7 - REMOTE CONTROL AND IR MODULE SELECTION REGISTERS..................................................... 71 8.9.1 Set7.Reg0 - Remote Infrared Receiver Control (RIR_RXC) .............................................. 72 8.9.2 Set7.Reg1 - Remote Infrared Transmitter Control (RIR_TXC)........................................... 73 8.9.3 Set7.Reg2 - Remote Infrared Config Register (RIR_CFG)................................................ 74 8.9.4 Set7.Reg3 - Sets Select Register (SSR)........................................................................ 75
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8.9.5 8.9.6 8.9.7 8.9.8 9 Set7.Reg4 - Infrared Module (Front End) Select 1 (IRM_SL1)........................................... 75 Set7.Reg5 - Infrared Module (Front End) Select 2 (IRM_SL2)........................................... 76 Set7.Reg6 - Infrared Module (Front End) Select 3 (IRM_SL3)........................................... 77 Set7.Reg7 - Infrared Module Control Register (IRM_CR) .................................................. 77
PARALLEL PORT................................................................................................................. 79
9.1 PRINTER INTERFACE LOGIC ...................................................................................................... 79 9.2 ENHANCED PARALLEL PORT (EPP) ......................................................................................... 80 9.2.1 Data Swapper.............................................................................................................. 81 9.2.2 Printer Status Buffer .................................................................................................... 81 9.2.3 Printer Control Latch and Printer Control Swapper........................................................... 81 9.2.4 EPP Address Port ....................................................................................................... 82 9.2.5 EPP Data Port 0-3....................................................................................................... 82 9.2.6 Bit Map of Parallel Port and EPP Registers ................................................................... 83 9.2.7 EPP Pin Descriptions .................................................................................................. 83 9.2.8 EPP Operation............................................................................................................ 85 9.3 EXTENDED CAPABILITIES PARALLEL (ECP) PORT........................................................................ 85 9.3.1 ECP Register and Mode Definitions............................................................................... 85 9.3.2 Data and ecpAFifo Port................................................................................................ 86 9.3.3 Device Status Register (DSR)....................................................................................... 87 9.3.4 Device Control Register (DCR)...................................................................................... 88 9.3.5 cFifo (Parallel Port Data FIFO) Mode = 010 ................................................................... 89 9.3.6 ecpDFifo (ECP Data FIFO) Mode = 011......................................................................... 89 9.3.7 tFifo (Test FIFO Mode) Mode = 110 .............................................................................. 89 9.3.8 cnfgA (Configuration Register A) Mode = 111................................................................. 89 9.3.9 cnfgB (Configuration Register B) Mode = 111................................................................. 89 9.3.10 ecr (Extended Control Register) Mode = all .................................................................... 90 9.3.11 Bit Map of ECP Port Registers ..................................................................................... 91 9.3.12 ECP Pin Descriptions .................................................................................................. 92 9.3.13 ECP Operation............................................................................................................ 93 9.3.14 FIFO Operation ........................................................................................................... 93 9.3.15 DMA Transfers............................................................................................................ 94 9.3.16 Programmed I/O (NON-DMA) Mode............................................................................... 94 9.4 EXTENSION FDD MODE (EXTFDD)........................................................................................... 94 9.5 EXTENSION 2FDD MODE (EXT2FDD) ....................................................................................... 94 10 11 12 GENERAL PURPOSE I/O................................................................................................... 95 ACPI REGISTERS FEATURES ........................................................................................... 97 CONFIGURATION REGISTER............................................................................................ 98
12.1 PLUG AND PLAY CONFIGURATION......................................................................................... 98 12.2 COMPATIBLE PNP.............................................................................................................. 98 12.2.1 Extended Function Registers ........................................................................................ 98 12.2.2 Extended Functions Enable Registers (EFERs)............................................................. 99 12.2.3 Extended Function Index Registers (EFIRs), Extended Function Data Registers(EFDRs)... 99 12.3 CONFIGURATION SEQUENCE................................................................................................. 99 12.3.1 Terminology ................................................................................................................ 99 12.3.2 Enter the extended function mode................................................................................. 99
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12.3.3 Configurate the configuration registers..........................................................................100 12.3.4 Exit the extended function mode ..................................................................................100 12.3.5 Software programming example ...................................................................................100 12.4 CHIP (GLOBAL) CONTROL REGISTER.....................................................................................101 12.5 LOGICAL DEVICE 0 (FDC)...................................................................................................107 12.6 LOGICAL DEVICE 1 (PARALLEL PORT)...................................................................................110 12.7 LOGICAL DEVICE 2 (UART A)..............................................................................................111 12.8 LOGICAL DEVICE 6 (FIR - FOR W83L517D ONLY)...................................................................112 12.9 LOGICAL DEVICE A (ACPI) .................................................................................................117 13 14 15 ORDERING INSTRUCTION ...............................................................................................121 HOW TO READ THE TOP MARKING .................................................................................121 PACKAGE DIMENSIONS ..................................................................................................122
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1 GENERAL DESCRIPTION
The W83L517D is evolving product from Winbond's most popular I/O family. They feature a whole new interface, namely LPC (Low Pin Count) interface, which will be supported in the new generation chip-set. This interface as its name suggests is to provide an economical implementation of I/O's interface with lower pin count and still maintains equivalent performance as its ISA interface counterpart. Approximately 40 pin counts are saved in LPC I/O comparing to ISA implementation. With this additional freedom, we can implement more devices on a single chip as demonstrated in W83L517D's integration of Flash ROM Interface. It is fully transparent in terms of software which means no BIOS or device driver update is needed except chip-specific configuration. The disk drive adapter functions of W83L517D include a floppy disk drive controller compatible with the industry standard 82077/ 765, data separator, write pre-compensation circuit, decode logic, data rate selection, clock generator, drive interface control logic, and interrupt and DMA logic. The wide range of functions integrated onto the W83L517D greatly reduces the number of components required for interfacing with floppy disk drives. The W83L517D supports four 360K, 720K, 1.2M, 1.44M, or 2.88M disk drives and data transfer rates of 250 Kb/s, 300 Kb/s, 500 Kb/s,1 Mb/s, and 2 Mb/s. The W83L517D but not W83L517D provides one high-speed serial communication ports (UARTs), one of which supports serial Infrared communication. The UART includes a 16-byte send/receive FIFO, a programmable baud rate generator, complete modem control capability, and a processor interrupt system. The UART provides legacy speed with baud rate up to 115.2k bps and also advanced speed with baud rates of 230k, 460k, or 921k bps, which support higher speed modems. In addition, the W83L517D provides IR functions: IrDA 1.0 (SIR for 1.152K bps) and IrDA 1.1 (MIR for 1.152M bps or FIR for 4M bps), TV remote IR, (Consumer IR, supporting NEC, RC-5, extended RC-5, and RECS-80 protocols). Please note that the W83L517D only provides one SIR port. The W83L517D supports one PC-compatible printer port (SPP), Bi-directional Printer port (BPP) and also Enhanced Parallel Port (EPP) and Extended Capabilities Port (ECP). Through the printer port interface pins, also available are: Extension FDD Mode and Extension 2FDD Mode allowing one or two external floppy disk drives to be connected. The configuration registers support mode selection, function enable/disable, and power down function selection. Furthermore, the configurable PnP features are compatible with the plug-and-play feature demand of Windows 95/98 , which makes system resource allocation more efficient than ever. The W83L517D provides a set of flexible I/O control functions to the system designer through a set of General Purpose I/O ports. These GPIO ports may serve as simple I/O or may be individually configured to provide a predefined alternate function. General Purpose Port 1 is designed to be functional even in power down mode (VCC is off). The W83L517D is made to fully comply with Microsoft (c) PC98 and PC99 Hardware Design Guide, and meet the requirements of ACPI. The W83L517D provides two important interfaces -- "Flash ROM interface and ISA keyboard controller interface". The Flash ROM interface can support up to 4Mb legacy flash ROM. The ISA KBC interface can supports legacy KBC such as Mitsubishi series, Hitachi series and Intel 8xC51.
TM
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2 FEATURES
General
* * * * * * * * * Meet LPC Spec. 1.01 Support LDRQ#(LPC DMA), SERIRQ (serial IRQ) Include all the features of Winbond I/O W83877ATF Compliant with Microsoft PC98/PC99 Hardware Design Guide Support DPM (Device Power Management), ACPI Support hardware power down mode Support printer port/floppy hardware auto-detect and auto-swap Programmable configuration settings Single 24 or 48 MHz clock input
FDC
* * * * * * * * * * * * * Compatible with IBM PC AT disk drive systems Variable write pre-compensation with track selectable capability Support vertical recording format DMA enable logic 16-byte data FIFOs Support floppy disk drives and tape drives Detects all overrun and underrun conditions Built-in address mark detection circuit to simplify the read electronics FDD anti-virus functions with software write protect and FDD write enable signal (write data signal was forced to be inac tive) Support up to four 3.5-inch or 5.25-inch floppy disk drives Completely compatible with industry standard 82077 360K/720K/1.2M/1.44M/2.88M format; 250K, 300K, 500K, 1M, 2M bps data transfer rate Support 3-mode FDD, and its Win95/98 driver
UART
* * * High-speed 16550 compatible UARTs with 16-byte send/receive FIFOs MIDI compatible Fully programmable serial-interface characteristics: --- 5, 6, 7 or 8-bit characters --- Even, odd or no parity bit generation/detection --- 1, 1.5 or 2 stop bits generation Internal diagnostic capabilities: --- Loop-back controls for communications link fault isolation --- Break, parity, overrun, framing error simulation Programmable baud generator allows division of 1.8461 MHz and 24 MHz by 1 to (216-1) Maximum baud rate up to 921k bps for 14.769 MHz and 1.5M bps for 24 MHz
*
* *
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Parallel Port
* * * * * * Compatible with IBMTM parallel port Support PS/2 compatible bi-directional parallel port Support Enhanced Parallel Port (EPP) - Compatible with IEEE 1284 specification Support Extended Capabilities Port (ECP) - Compatible with IEEE 1284 specification Extension FDD mode supports disk drive B; and Extension 2FDD mode supports disk drives A and B through parallel port Enhanced printer port back-drive current protection
Flash ROM Interface
* Support up to 4Mb flash ROM
Keyboard Controller Interface
* Support Legacy ISA keyboard controller
General Purpose I/O Ports
* * * 38 programmable general purpose I/O ports General purpose I/O ports can serve as simple I/O ports, watch dog timer output, power LED output, infrared I/O pins, suspend LED output, Beep output Functional in power down mode
Package
* 100-pin LQFP
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3 PIN CONFIGURATION
XA6/GP43 XA7/GP44 XA8/GP45 XA9/GP46 XA10/GP47 XA11/GP50 XA12/GP51 XA13/GP52 XA14/GP53 GND XA15/GP54 XA16/GP55 XA17/GP56 XA18/GP57 VCC HEAD# RDATA# WP# TRAK0# WE# WD# STEP# DIR# MOA# DSKCHG#
7 7 7 7 7 7 6 66 6 6 5 4 3 2 1 0 9 87 6 5 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 11 1 2 3 4 56 7 8 9 0 1
XA5/GP42 XA4/GP41 XA3/GP40 XA2/GP27 XA1/GP26 XA0/GP15 ROMCS#/GP14/PENROM# MEMW#/GP13 MEMR#/GP12 XD7/GP37 XD6/GP36 XD5/GP35 XD4/GP34 XD3/GP33 GND XD2/GP32 XD1/GP31 XD0/GP30 IOW#/GP25 IOR#/GP24 IRQ12IN/GP23 IRQ1IN/GP22 MCCS#/GP21 KBCS#/GP20/PENKB# VCC3V 66666555555555 43210987654321 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 IRSEL0_IRRXH IRTX IRRX RIA# DCDA# SOUTA/PEN48 SINA DTRA#/PNPCSv# RTSA#/HEFRAS DSR# VCC CTSA# STB# AFD# ERR# GND INIT# SLIN# PD7 PD6 PD5 PD4 PD3 PD2 PD1
W83L517D
1 1 11 11 1 1 2 2 22 2 2 2 3 45 67 8 9 0 1 23 4 5
DSA# INDEX# DRVDEN0 P80CS#/GP10 RTCCS#/GP11 CLKIN PME# LRESET# PDCTL# GND SERIRQ PCICLK LDRQ# LAD0 VCC3V LAD1 LAD2 LAD3 LFRAME# PRT_NFDD# SLCT PE BUSY ACK# PD0
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4
I/O8t
PIN DESCRIPTION
- TTL level bi-directional pin with 8 mA source-sink capability - TTL level bi-directional pin with 12 mA source-sink capability - 3.3V TTL level bi-directional pin with 12 mA source-sink capability - TTL level bi-directional pin open drain output with 12 mA sink capability - TTL level bi-directional pin with 24 mA source-sink capability - TTL level output pin with 12 mA source-sink capability - 3.3V TTL level output pin with 12 mA source-sink capability - Open-drain output pin with 12 mA sink capability - Open-drain output pin with 24 mA sink capability - CMOS level Schmitt-trigger input pin - TTL level input pin - TTL level input pin with internal pull down resistor - TTL level Schmitt-trigger input pin - 3.3V TTL level Schmitt-trigger input pin
Note: Please refer to Section 13.2 DC CHARACTERISTICS for details.
I/O12t I/O12tp3 I/OD12t I/O24t OUT12t OUT12tp3 OD12 OD24 INcs INt INtd INts INtsp3
4.1 LPC Interface
SYMBOL CLKIN PME# PCICLK LDRQ# SERIRQ LAD[3:0] LFRAME# LRESET# PDCTL# PIN 6 7 12 13 11 14, 16-18 19 8 9 INtsp3 INtsp3 INtsp3 I/O INt OD12 INtsp3 O12tp3 I/OD12t I/O12tp3 FUNCTION System clock input. According to the input frequency 24MHz or 48MHz, it is selectable through register. Default is 24MHz input. Generated PME event. PCI clock input. Encoded DMA Request signal. Serial IRQ input/Output. These signal lines communicate address, control, and data information over the LPC bus between a host and a peripheral. Indicates start of a new cycle or termination of a broken cycle. Reset signal. It can connect to PCIRST# signal on the host. Hardware power down input pin for chip power down. Programmable control by registers.
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4.2 FDC Interface
SYMBOL DRVDEN0 INDEX# PIN 3 2 I/O OD24 INcs Drive Density Select bit 0. This Schmitt-triggered input from the disk drive is active low when the head is positioned over the beginning of a track marked by an index hole. This input pin is pulled up internally by a 1 K resistor. The resistor can be disabled by bit 7 of L0-CRF0 (FIPURDWN). Drive Select A. When set to 0, this pin enables disk drive A. This is an open drain output. Diskette change. This signal is active low at power on and whenever the diskette is removed. This input pin is pulled up internally by a 1 K resistor. The resistor can be disabled by bit 7 of L0-CRF0 (FIPURDWN). Motor A On. When set to 0, this pin enables disk drive 0. This is an open drain output. Direction of the head step motor. An open drain output. Logic 1 = outward motion Logic 0 = inward motion STEP# WD# WE# TRAK0# 97 96 95 94 OD24 OD24 OD24 INcs Step output pulses. This active low open drain output produces a pulse to move the head to another track. Write data. This logic low open drain writes pre-compensation serial data to the selected FDD. An open drain output. Write enable. An open drain output. Track 0. This Schmitt-triggered input from the disk drive is active low when the head is positioned over the outermost track. This input pin is pulled up internally by a 1 K resistor. The resistor can be disabled by bit 7 of L0-CRF0 (FIPURDWN). Write protected. This active low Schmitt input from the disk drive indicates that the diskette is write-protected. This input pin is pulled up internally by a 1 K resistor. The resistor can be disabled by bit 7 of L0-CRF0 (FIPURDWN). The read data input signal from the FDD. This input pin is pulled up internally by a 1 K resistor. The resistor can be disabled by bit 7 of L0-CRF0 (FIPURDWN). Head select. This open drain output determines which disk drive head is active. Logic 1 = side 0 Logic 0 = side 1 FUNCTION
DSA# DSKCHG#
1 100
OD24 INcs
MOA# DIR#
99 98
OD24 OD24
WP#
93
INcs
RDATA#
92
INcs
HEAD#
91
OD24
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4.3 Multi-Mode Parallel Port
The following pins have alternate functions, which are controlled by CR28 and L3-CRF0. SYMBOL PRT_NFDD# PIN 20 I/O INtsp3 FUNCTION PRT_NFDD# is the printer Not Floppy signal. It indicated the connected device as Printer or Floppy Disk on printer port. If the default function(Printer mode) is used, it must connect to low level. PRINTER MODE: An active high input on this pin indicates that the printer is selected. This pin is pulled high internally. Refer to the description of the parallel port for definition of this pin in ECP and EPP mode. EXTENSION FDD MODE: WE2# This pin is for Extension FDD B; its function is the same as the WE# pin of FDC. EXTENSION 2FDD MODE: WE2# This pin is for Extension FDD A and B; its function is the same as the WE# pin of FDC. PRINTER MODE: An active high input on this pin indicates that the printer has detected the end of the paper. This pin is pulled high internally. Refer to the description of the parallel port for the definition of this pin in ECP and EPP mode. EXTENSION FDD MODE: WD2# This pin is for Extension FDD B; its function is the same as the WD# pin of FDC. EXTENSION 2FDD MODE: WD2# This pin is for Extension FDD A and B; its function is the same as the WD# pin of FDC. PRINTER MODE: An active high input indicates that the printer is not ready to receive data. This pin is pulled high internally. Refer to the description of the parallel port for definition of this pin in ECP and EPP mode. EXTENSION FDD MODE: MOB2# This pin is for Extension FDD B; its function is the same as the MOB# pin of FDC. EXTENSION 2FDD MODE: MOB2# This pin is for Extension FDD A and B; its function is the same as the MOB# pin of FDC.
SLCT
21
INt
(WE2#)
OD12
OD12
PE
22
INt
(WD2#)
OD12
OD12
BUSY
23
INt
(MOB2#)
OD12
OD12
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1.3 Multi-Mode Parallel Port, continued
SYMBOL ACK#
PIN 24
I/O INt
FUNCTION PRINTER MODE: ACK# An active low input on this pin indicates that the printer has received data and is ready to accept more data. This pin is pulled high internally. Refer to the description of the parallel port for the definition of this pin in ECP and EPP mode. EXTENSION FDD MODE: DSB2# This pin is for the Extension FDD B; its functions is the same as the DSB# pin of FDC. EXTENSION 2FDD MODE: DSB2# This pin is for Extension FDD A and B; its function is the same as the DSB# pin of FDC. PRINTER MODE: PD0 Parallel port data bus bit 0. Refer to the description of the parallel port for the definition of this pin in ECP and EPP mode. EXTENSION FDD MODE: INDEX2# This pin is for Extension FDD B; its function is the same as the INDEX# pin of FDC. It is pulled high internally. EXTENSION 2FDD MODE: INDEX2# This pin is for Extension FDD A and B; its function is the same as the INDEX# pin of FDC. It is pulled high internally. PRINTER MODE: PD1 Parallel port data bus bit 1. Refer to the description of the parallel port for the definition of this pin in ECP and EPP mode. EXTENSION FDD MODE: TRAK02# This pin is for Extension FDD B; its function is the same as the TRAK0# pin of FDC. It is pulled high internally. EXTENSION. 2FDD MODE: TRAK02# This pin is for Extension FDD A and B; its function is the same as the TRAK0# pin of FDC. It is pulled high internally. PRINTER MODE: PD2 Parallel port data bus bit 2. Refer to the description of the parallel port for the definition of this pin in ECP and EPP mode. EXTENSION FDD MODE: WP2# This pin is for Extension FDD B; its function is the same as the WP# pin of FDC. It is pulled high internally. EXTENSION. 2FDD MODE: WP2# This pin is for Extension FDD A and B; its function is the same as the WP# pin of FDC. It is pulled high internally.
(DSB#)
OD12
OD12
PD0
25
I/O12t
(INDEX2#)
INt
INt
PD1
26
I/O12t
(TRAK02#)
INt
INt PD2 27 I/O12t
(WP2#)
INt
INt
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1.3 Multi-Mode Parallel Port, continued
SYMBOL PD3
PIN 28
I/O I/O12t
FUNCTION PRINTER MODE: PD3 Parallel port data bus bit 3. Refer to the description of the parallel port for the definition of this pin in ECP and EPP mode. EXTENSION FDD MODE: RDATA2# This pin is for Extension FDD B; its function is the same as the RDATA# pin of FDC. It is pulled high internally. EXTENSION 2FDD MODE: RDATA2# This pin is for Extension FDD A and B; its function is the same as the RDATA# pin of FDC. It is pulled high internally. PRINTER MODE: PD4 Parallel port data bus bit 4. Refer to the description of the parallel port for the definition of this pin in ECP and EPP mode. EXTENSION FDD MODE: DSKCHG2# This pin is for Extension FDD B; the function of this pin is the same as the DSKCHG# pin of FDC. It is pulled high internally. EXTENSION 2FDD MODE: DSKCHG2# This pin is for Extension FDD A and B; this function of this pin is the same as the DSKCHG# pin of FDC. It is pulled high internally. PRINTER MODE: PD5 Parallel port data bus bit 5. Refer to the description of the parallel port for the definition of this pin in ECP and EPP mode. EXTENSION FDD MODE: This pin is a tri-state output. EXTENSION 2FDD MODE: This pin is a tri-state output. PRINTER MODE: PD6 Parallel port data bus bit 6. Refer to the description of the parallel port for the definition of this pin in ECP and EPP mode. EXTENSION FDD MODE: This pin is a tri-state output. EXTENSION. 2FDD MODE: MOA2# This pin is for Extension FDD A; its function is the same as the MOA# pin of FDC. PRINTER MODE: PD7 Parallel port data bus bit 7. Refer to the description of the parallel port for the definition of this pin in ECP and EPP mode. EXTENSION FDD MODE: This pin is a tri-state output. EXTENSION 2FDD MODE: DSA2# This pin is for Extension FDD A; its function is the same as the DSA# pin of FDC.
(RDATA2#)
INt
INt PD4 29 I/O12t
(DSKCHG2#)
INt
INt
PD5
30
I/O12t
PD6
31
I/OD12t -
(MOA2#) OD12
PD7
32
I/OD12t
(DSA2#)
OD12
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1.3 Multi-Mode Parallel Port, continued
SYMBOL SLIN#
PIN 33
I/O OD12
FUNCTION PRINTER MODE: SLIN# Output line for detection of printer selection. This pin is pulled high internally. Refer to the description of the parallel port for the definition of this pin in ECP and EPP mode. EXTENSION FDD MODE: STEP2# This pin is for Extension FDD B; its function is the same as the STEP# pin of FDC. EXTENSION 2FDD MODE: STEP2# This pin is for Extension FDD A and B; its function is the same as the STEP# pin of FDC. PRINTER MODE: INIT# Output line for the printer initialization. This pin is pulled high internally. Refer to the description of the parallel port for the definition of this pin in ECP and EPP mode. EXTENSION FDD MODE: DIR2# This pin is for Extension FDD B; its function is the same as the DIR# pin of FDC. EXTENSION 2FDD MODE: DIR2# This pin is for Extension FDD A and B; its function is the same as the DIR# pin of FDC. PRINTER MODE: ERR# An active low input on this pin indicates that the printer has encountered an error condition. This pin is pulled high internally. Refer to the description of the parallel port for the definition of this pin in ECP and EPP mode. EXTENSION FDD MODE: HEAD2# This pin is for Extension FDD B; its function is the same as the HEAD# pin of FDC. EXTENSION 2FDD MODE: HEAD2# This pin is for Extension FDD A and B; its function is the same as the HEAD# pin of FDC.
(STEP2#)
OD12
OD12 INIT# 34 OD12
(DIR2#)
OD12
OD12 ERR# 36 INt
(HEAD2#) OD12 OD12
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1.3 Multi-Mode Parallel Port, continued
SYMBOL AFD#
PIN 37
I/O OD12
FUNCTION PRINTER MODE: AFD# An active low output from this pin causes the printer to auto feed a line after a line is printed. This pin is pulled high internally. Refer to the description of the parallel port for the definition of this pin in ECP and EPP mode. EXTENSION FDD MODE: DRVDEN0 This pin is for Extension FDD B; its function is the same as the DRVDEN0 pin of FDC. EXTENSION 2FDD MODE: DRVDEN0 This pin is for Extension FDD A and B; its function is the same as the DRVDEN0 pin of FDC. PRINTER MODE: STB# An active low output is used to latch the parallel data into the printer. This pin is pulled high internally. Refer to the description of the parallel port for the definition of this pin in ECP and EPP mode. EXTENSION FDD MODE: This pin is a tri-state output. EXTENSION 2FDD MODE: This pin is a tri -state output.
(DRVDEN0)
OD12
OD12 STB# 38 OD12
-
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4.4 Serial Port Interface and Infrared Port
SYMBOL CTSA# PIN 39 I/O Int FUNCTION Clear To Send. It is the modem control input. The function of these pins can be tested by reading bit 4 of the handshake status register. Data Set Ready. An active low signal indicates the modem or data set is ready to establish a communication link and transfer data to the UART. UART A Request To Send. An active low signal informs the modem or data set that the controller is ready to send data. During power-on reset, this pin is pulled down internally and is defined as HEFRAS and configuration port' address is slected to s 2Eh, which provides the power-on value for CRXX bit X (HEFRAS). A 4.7 k resistor is recommended if intends to pull up and selects 4EH as configuration I/O port s address) UART A Data Terminal Ready. An active low signal informs the modem or data set that the controller is ready to communicate. During power-on reset, this pin is pulled down internally and is defined as PNPCSV# , which provides the power-on value for CR24 bit 0 (PNP CSV#). A 4.7 k is recommended if intends to pull up. (clear the default value of FDC, UARTs, and PRT) Serial Input. It is used to receive serial data through the communication link. UART A Serial Output. It is used to transmit serial data out to the communication link. During power-on reset, this pin is pulled down internally and is defined as PEN48 and the clock input (Pin 6) should be 48MHz, which provides the power-on value for CRxx bit x (EN48). A 4.7 k resistor is recommended if intends to pull up and 24MHz input is slected. Data Carrier Detect. An active low signal indicates the modem or data set has detected a data carrier. Ring Indicator. An active low signal indicates that a ring signal is being received from the modem or data set. Alternate Function Input: Infrared Receiver input. Alternate Function Output: Infrared Transmitter Output. This pin is only for W83L517D and after a reset, this pin is Infrared Control Signal 0, this signal is output and select FIR or SIR mode for IR module. This pin can be set as IRRXH , the signal is high speed infrared receiver input
DSRA#
41
Int
RTSA# (HEFRAS)
42
I/O8t
DTRA#
43
I/O8t
(PNPCSV#)
SINA SOUTA
44 45
INt I/O8
(PEN48)
INt
DCDA# RIA# IRRX IRTX IRSEL0_ IRRXH
46 47 48 49 50
INt INt INts OUT12t I/O12t
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4.5 KBC and FLASH ROM Interface
SYMBOL P80CS# (GP10) (PLED) RTCCS# (GP11) (WDTO) KBCS# 52 (GP20) (PENKB#) I/O12 INt PIN 4 I/O I/OD12 FUNCTION Decoded I/O write asserted and the address 0x80h to output selected signal. General purpose I/O PORT 1 , Programmable Power LED. Decoded the address 0x70h and 0x71h to output selected signal . General purpose I/O PORT 1 , Programmable watch dog timer. Decode the address 60h and 64h to output selected signal. Enable by PENKB# signal with Low-level during power-on setting. General purpose I/O PORT 2 , During power-on reset, this pin is pulled down internally and is defined as PENKB# and all the K/B interface will be active, which provides the power on value for CR24 bit 7. A 4.7k resistor is recommended if intends to pull up and disable K/B functions. Decode the address 62h and 66h to output selected signal Enable by PENKB# signal with Lo-level during power-on setting. General purpose I/O PORT 2 , Parallel Interrupt Requested Input 1. This interrupt request is used for specific K/B functions. General purpose I/O PORT 2 , Parallel Interrupt Requested Input 12. This interrupt request is used for specific K/B functions. General purpose I/O PORT 2 , I/O Read. IOR# is the command to an ISA I/O slave device that the slave may drive data on to the ISA data bus (XD[0:7]). General purpose I/O PORT 2 ,. I/O Write. IOW# is the command to an ISA I/O slave device that the slave may latch data from the ISA data bus (XD[0:7]). General purpose I/O PORT 2 , XData BUS. XD[0:7] provide the 8-bit data path for KBC and ROM devices residing on the ISA Bus. General purpose I/O PORT 3 ,
5 I/OD12 O12
MCCS#
53
O12
(GP21) IRQ1IN (GP22) IRQ12IN (GP23) IOR# (GP24) IOW# (GP25) XD[0:7] (GP30-GP37) 58-60 62-66 57 56 55 54
I/O12 Int I/O12 Int I/O12 O12t I/O12t O12t I/O12t I/O12t I/O12t
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1.5 KBC and FLASH ROM Interface, continued
SYMBOL MEMR# (GP12) MEMW# (GP13) ROMCS# (GP14) (PENROM#)
PIN 67
I/O O12t I/O12t
FUNCTION Flash ROM interface Memory Read Enable General purpose I/O PORT 1 , Flash ROM interface Memory Write Enable General purpose I/O PORT 1 , Flash ROM interface Chip Select General purpose I/O PORT 1 , During power-on reset , this pin is pulled down internally and is defined as PENROM# and decoded memory address of BIOS to output selected signal, which provides the power on value for CR24 bit 1. A 4.7k is recommended if intends to pull up and disable BIOS ROM function . Flash ROM interface Address 0. General purpose I/O PORT 1 , Flash ROM interface Address 1. General purpose I/O PORT 2 , Flash ROM interface Address 2. General purpose I/O PORT 2 , Flash ROM interface Address [3:10]. General purpose I/O PORT 4 , Flash ROM interface Address [11:18]. General purpose I/O PORT 5 ,
68
O12t I/O12t OD12 I/OD12 INt
69
XA0 (GP15) XA1 (GP26) XA2 (GP27) XA3-XA10 (GP40-GP47) XA11-XA18 (GP50-GP57)
70 71 72 73-80 81-84 86-89
O I/O12t O I/O12t O I/O12t O I/O12t O I/O12t
4.6 POWER PINS
SYMBOL VCC3V VCC GND PIN 15, 51 40, 90 10, 35, 61, 85 FUNCTION +3.3V power supply for core logic and driving 3V on host interface. +5V or +3.3V power supply for device output pad. Ground.
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5
LPC (LOW PIN COUNT) INTERFACE
LPC interface is to replace ISA interface serving as a bus interface between host (chip-set) and peripheral (Winbond I/O). Data transfer on the LPC bus are serialized over a 4 bit bus. The general characteristics of the interface implemented in Winbond LPC I/O are: One control line, namely LFRAME#, which is used by the host to start or stop transfers. No peripherals drive this signal. The LAD[3:0] bus, which communicates information serially. The information conveyed are cycle type, cycle direction, chip selection, address, data, and wait states. MR (master reset) of Winbond ISA I/O is replaced with a active low reset signal, namely LRESET#, in Winbond LPC I/O. An additional 33 MHz PCI clock is needed in Winbond LPC I/O for synchronization. DMA requests are issued through LDRQ#. Interrupt requests are issued through SERIRQ. Power management events are issued through PME#. Comparing to its ISA counterpart, LPC implementation saves up to 40 pin counts free for integrating more devices on a single chip. The transition from ISA to LPC is transparent in terms of software which means no BIOS or device driver update is needed except chip-specific configuration.
6 FDC FUNCTIONAL DESCRIPTION
6.1 W83L517D FDC
The floppy disk controller of the W8369L517D integrates all of the logic required for floppy disk control. The FDC implements a PC/AT or PS/2 solution. All programmable options default to compatible values. The FIFO provides better system performance in multi-master systems. The digital data separator supports up to 2 M bits/sec data rate. The FDC includes the following blocks: AT interface, Precompensation, Data Rate Selection, Digital Data Separator, FIFO, and FDC Core. 6.1.1 AT interface The interface consists of the standard asynchronous signals: RD#, WR#, A0-A3, IRQ, DMA control, and a data bus. The address lines select between the configuration registers, the FIFO and control/status registers. This interface can be switched between PC/AT, Model 30, or PS/2 normal modes. The PS/2 register sets are a superset of the registers found in a PC/AT. 6.1.2 FIFO (Data) The FIFO is 16 bytes in size and has programmable threshold values. All command parameter information and disk data transfers go through the FIFO. Data transfers are governed by the RQM and DIO bits in the Main Status Register.
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The FIFO defaults to disabled mode after any form of reset. This maintains PC/AT hardware compatibility. The default values can be changed through the CONFIGURE command. The advantage of the FIFO is that it allows the system a larger DMA latency without causing disk errors. The following tables give several examples of the delays with a FIFO. The data are based upon the following formula: THRESHOLD # x (1/DATA/RATE) *8 - 1.5 S = DELAY FIFO THRESHOLD 1 Byte 2 Byte 8 Byte 15 Byte FIFO THRESHOLD 1 Byte 2 Byte 8 Byte 15 Byte MAXIMUM DELAY TO SERVICING AT 500K BPS Data Rate 1 x 16 S - 1.5 S = 14.5 S 2 x 16 S - 1.5 S = 30.5 S 8 x 16 S - 1.5 S = 6.5 S 15 x 16 S - 1.5 S = 238.5 S MAXIMUM DELAY TO SERVICING AT 1M BPS Data Rate 1 x 8 S - 1.5 S = 6.5 S 2 x 8 S - 1.5 S = 14.5 S 8 x 8 S - 1.5 S = 62.5 S 15 x 8 S - 1.5 S = 118.5 S
At the start of a command the FIFO is always disabled and command parameters must be sent based upon the RQM and DIO bit settings in the main status register. When the FDC enters the command execution phase, it clears the FIFO of any data to ensure that invalid data are not transferred. An overrun and underrun will terminate the current command and the data transfer. Disk writes will complete the current sector by generating a 00 pattern and valid CRC. Reads require the host to remove the remaining data so that the result phase may be entered. DMA transfers are enabled with the SPECIFY command and are initiated by the FDC by activating the DRQ pin during a data transfer command. The FIFO is enabled directly by asserting DACK# and addresses need not be valid. Note that if the DMA controller is programmed to function in verify mode a pseudo read is performed by the FDC based only on DACK#. This mode is only available when the FDC has been configured into byte mode (FIFO disabled) and is programmed to do a read. With the FIFO enabled the above operation is performed by using the new VERIFY command. No DMA operation is needed.
6.1.3 Data Separator The function of the data separator is to lock onto the incoming serial read data. When a lock is achieved the serial front end logic of the chip is provided with a clock which is synchronized to the read data. The synchronized clock, called the Data Window, is used to internally sample the serial data portion of the bit cell, and the alternate state samples the clock portion. Serial to parallel conversion logic separates the read data into clock and data bytes. The Digital Data Separator (DDS) has three parts: control logic, error adjustment, and speed tracking. The DDS circuit cycles once every 12 clock cycles ideally. Any data pulse input will be synchronized and then adjusted by immediate error adjustment. The control logic will generate RDD and RWD for every pulse input. Publication Release Date: Jul. 2002 Revision 1.0
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W83L517D
During any cycle where no data pulse is present, the DDS cycles are based on speed. A digital integrator is used to keep track of the speed changes in the input data stream.
6.1.4 Write Precompensation The write precompensation logic is used to minimize bit shifts in the RDDATA stream from the disk drive. Shifting of bits is a known phenomenon in magnetic media and is dependent on the disk media and the floppy drive. The FDC monitors the bit stream that is being sent to the drive. The data patterns that require precompensation are well known. Depending upon the pattern, the bit is shifted either early or late relative to the surrounding bits.
6.1.5 Perpendicular Recording Mode The FDC is also capable of interfacing directly to perpendicular recording floppy drives. Perpendicular recording differs from the traditional longitudinal method in that the magnetic bits are oriented vertically. This scheme packs more data bits into the same area. FDCs with perpendicular recording drives can read standard 3.5" floppy disks and can read and write perpendicular media. Some manufacturers offer drives that can read and write standard and perpendicular media in a perpendicular media drive. A single command puts the FDC into perpendicular mode. All other commands operate as they normally do. The perpendicular mode requires a 1 Mbps data rate for the FDC. At this data rate the FIFO eases the host interface bottleneck due to the speed of data transfer to or from the disk.
6.1.6 FDC Core The W83L517D FDC is capable of performing twenty commands. Each command is initiated by a multi-byte transfer from the microprocessor. The result can also be a multi-byte transfer back to the microprocessor. Each command consists of three phases: command, execution, and result. Command The microprocessor issues all required information to the controller to perform a specific operation. Execution The controller performs the specified operation. Result After the operation is completed, status information and other housekeeping information is provided to the microprocessor.
6.1.7 FDC Commands Command Symbol Descriptions: C: Cylinder number 0 - 256 D: Data Pattern DIR: Step Direction DIR = 0, step out
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DIR = 1, step in Disk Drive Select 0 Disk Drive Select 1 Data Length Enable Count End of Track Enable FIFO Enable Implied Seek End of track FIFO Threshold Gap length selection Gap Length Head number Head number select Head Load Time Head Unload Time Lock EFIFO, FIFOTHR, PTRTRK bits prevent affected by software reset MFM or FM Mode Multitrack The number of data bytes written in a sector New Cylinder Number Non-DMA Mode Overwritten Present Cylinder Number Polling Disable Precompensation Start Track Number Record Relative Cylinder Number Read/Write Sector/per cylinder Skip deleted data address mark Step Rate Time Status Register 0 Status Register 1 Status Register 2 Status Register 3 Write gate alters timing of WE
DS0: DS1: DTL: EC: EOT: EFIFO: EIS: EOT: FIFOTHR: GAP: GPL: H: HDS: HLT: HUT: LOCK: MFM: MT: N: NCN: ND: OW: PCN: POLL: PRETRK: R: RCN: R/W: SC: SK: SRT: ST0: ST1: ST2: ST3: WG:
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(1) Read Data PHASE Command R/W W W W W W W W W W Execution Result R R R R R R R -------------------- ST0 ------------------------------------------ ST1 ------------------------------------------ ST2 -------------------------------------------- C --------------------------------------------- H --------------------------------------------- R --------------------------------------------- N -----------------------Sector ID information after command execution D7 0 D6 0 D5 SK 0 D4 0 0 D3 0 0 D2 1 D1 1 D0 0 REMARKS Command codes Sector ID information prior to command execution
MT MFM
HDS DS1 DS0
---------------------- C --------------------------------------------- H --------------------------------------------- R --------------------------------------------- N ------------------------------------------- EOT ------------------------------------------ GPL ------------------------------------------ DTL -----------------------
Data transfer between the FDD and system Status information after command execution
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(2) Read Deleted Data PHASE Command R/W W W W W W W W W W Execution Result R R R R R R R -------------------- ST0 ------------------------------------------ ST1 ------------------------------------------ ST2 -------------------------------------------- C --------------------------------------------- H --------------------------------------------- R --------------------------------------------- N -----------------------Sector ID information after command execution D7 D6 D5 SK 0 D4 0 0 D3 1 0 D2 1 D1 0 D0 0 REMARKS Command codes
MT MFM 0 0
HDS DS1 DS0 Sector ID information prior to command execution
---------------------- C --------------------------------------------- H --------------------------------------------- R --------------------------------------------- N ------------------------------------------- EOT ------------------------------------------ GPL ------------------------------------------ DTL -----------------------
Data transfer between the FDD and system Status information after command execution
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(3) Read A Track PHASE Command R/W W W W W W W W W W Execution D7 0 0 D6 MFM 0 D5 0 0 D4 0 0 D3 0 0 D2 0 D1 1 D0 0 REMARKS Command codes
HDS DS1 DS0 Sector ID information prior to command execution
---------------------- C --------------------------------------------- H --------------------------------------------- R --------------------------------------------- N ------------------------------------------- EOT ------------------------------------------ GPL ------------------------------------------ DTL -----------------------
Data transfer between the FDD and system; FDD reads contents of all cylinders from index hole to EOT R R R R R R R -------------------- ST0 ------------------------------------------ ST1 ------------------------------------------ ST2 -------------------------------------------- C --------------------------------------------- H --------------------------------------------- R --------------------------------------------- N -----------------------Sector ID information after command execution Status information after command execution
Result
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(4) Read ID PHASE Command Execution R/W W W D7 D6 0 MFM 0 0 D5 0 0 D4 0 0 D3 1 0 D2 D1 D0 0 1 0 HDS DS1 DS0 REMARKS Command codes The first correct ID information on the cylinder is stored in Data Register Status information after command execution Disk status after the command has been completed
Result
R R R R R R R
-------------------- ST0 ------------------------------------------ ST1 ------------------------------------------ ST2 -------------------------------------------- C --------------------------------------------- H --------------------------------------------- R --------------------------------------------- N ------------------------
(5) Verify PHASE Command
R/W W W W W W W W W
D7 D6 D5 D4 D3 D2 D1 D0 MT MFM SK 1 0 1 1 0 EC 0 0 0 0 HDS DS1 DS0 ---------------------- C --------------------------------------------- H --------------------------------------------- R --------------------------------------------- N ------------------------------------------- EOT ------------------------------------------ GPL ------------------------------------------ DTL/SC -------------------
REMARKS Command codes Sector ID information prior to command execution
Execution Result R R R R R R R -------------------- ST0 ------------------------------------------ ST1 ------------------------------------------ ST2 -------------------------------------------- C --------------------------------------------- H --------------------------------------------- R --------------------------------------------- N ------------------------
No data transfer takes place Status information after command execution Sector ID information after command execution
(6) Version PHASE Command Result R/W W R D7 0 1 D6 0 0 D5 0 0 D4 1 1 D3 0 0 D2 0 0 D1 0 0 D0 0 0 REMARKS Command code Enhanced controller
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(7) Write Data PHASE Command R/W W W W W W W W W W D7 D6 D5 D4 D3 D2 D1 D0 MT MFM 0 0 0 1 0 1 0 0 0 0 0 HDS DS1 DS0 ---------------------- C --------------------------------------------- H --------------------------------------------- R --------------------------------------------- N ------------------------------------------- EOT ------------------------------------------ GPL ------------------------------------------ DTL ----------------------REMARKS Command codes Sector ID information prior to Command execution
Execution Result R R R R R R R -------------------- ST0 ------------------------------------------ ST1 ------------------------------------------ ST2 -------------------------------------------- C --------------------------------------------- H --------------------------------------------- R --------------------------------------------- N ------------------------
Data transfer between the FDD and system Status information after Command execution Sector ID information after Command execution
(8) Write Deleted Data PHASE R/W D7 D6 D5 D4 D3 D2 D1 D0 Command W MT MFM 0 0 1 0 0 1 W 0 0 0 0 0 HDS DS1 DS0 W ---------------------- C -----------------------W ---------------------- H -----------------------W ---------------------- R -----------------------W ---------------------- N -----------------------W -------------------- EOT ----------------------W -------------------- GPL ----------------------W -------------------- DTL ----------------------Execution Result R R R R R R R -------------------- ST0 ------------------------------------------ ST1 ------------------------------------------ ST2 -------------------------------------------- C --------------------------------------------- H --------------------------------------------- R --------------------------------------------- N ------------------------
REMARKS Command codes Sector ID information prior to command execution
Data transfer between the FDD and system Status information after command execution Sector ID information after command execution
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(9) Format A Track PHASE Command R/W W W W W W W Execution for Each Sector Repeat: Result W W W W R R R R R R R D7 0 0 D6 MFM 0 D5 0 0 D4 0 0 D3 1 0 D2 1 D1 0 D0 1 REMARKS Command codes Bytes/Sector Sectors/Cylinder Gap 3 Filler Byte Input Sector Parameters
HDS DS1 DS0
---------------------- N -------------------------------------------- SC ------------------------------------------- GPL ------------------------------------------ D --------------------------------------------- C --------------------------------------------- H --------------------------------------------- R --------------------------------------------- N ------------------------------------------- ST0 ------------------------------------------ ST1 ------------------------------------------ ST2 -------------------------------------- Undefined ---------------------------------- Undefined ---------------------------------- Undefined ---------------------------------- Undefined -------------------
Status information after command execution
(10) Recalibrate PHASE Command Execution R/W W W D7 0 0 D6 0 0 D5 0 0 D4 0 0 D3 0 0 D2 1 0 D1 1 D0 1 REMARKS Command codes Head retracted to Track 0 Interrupt
DS1 DS0
(11) Sense Interrupt Status PHASE Command Result R/W W R R D7 0 D6 0 D5 0 D4 0 D3 1 D2 0 D1 0 D0 REMARKS Status information at the end of each seek operation
0 Command code
---------------- ST0 ---------------------------------------- PCN -------------------------
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(12) Specify PHASE Command R/W W W W D7 0 D6 0 D5 0 D4 0 D3 0 D2 0 D1 1 D0 1 REMARKS Command codes
| ---------SRT ----------- | --------- HUT ---------- | |------------ HLT ----------------------------------| ND
(13) Seek PHASE Command R/W W W W Execution R D7 0 0 D6 0 0 D5 0 0 D4 0 0 D3 1 0 D2 1 D1 1 D0 1 REMARKS Command codes
HDS DS1 DS0 Head positioned over proper cylinder on diskette
-------------------- NCN -----------------------
(14) Configure PHASE Command R/W W W W W Execution D7 0 0 0 D6 0 0 D5 0 0 D4 1 0 D3 0 0 D2 0 0 D1 1 0 D0 1 0 REMARKS Configure information
EIS EFIFO POLL | ------ FIFOTHR ----| Internal registers written
| --------------------PRETRK ----------------------- |
(15) Relative Seek PHASE Command R/W W W W D7 1 0 D6 DIR 0 D5 0 0 D4 0 0 D3 1 0 D2 1 D1 1 D0 1 REMARKS Command codes
HDS DS1 DS0
| -------------------- RCN ---------------------------- |
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(16) Dumpreg PHASE Command Result R/W W R R R R R R R R R R D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 0 1 1 1 0 ----------------------- PCN-Drive 0------------------------------------------ PCN-Drive 1 ----------------------------------------- PCN-Drive 2------------------------------------------ PCN-Drive 3 --------------------------SRT ------------------ | --------- HUT ------------------ HLT -----------------------------------| ND ------------------------ SC/EOT ---------------------LOCK 0 D3 D2 D1 D0 GAP WG 0 EIS EFIFO POLL | ------ FIFOTHR ------------------------------PRETRK ------------------------REMARKS Registers placed in FIFO
(17) Perpendicular Mode PHASE Command R/W W W D7 0 OW D6 0 0 D5 0 D3 D4 1 D2 D3 0 D1 D2 D1 D0 0 1 0 D0 GAP WG REMARKS Command Code
(18) Lock PHASE Command Result R/W W R D7 D6 LOCK 0 0 0 D5 D4 D3 0 1 0 0 LOCK 0 D2 1 0 D1 0 0 D0 0 0 REMARKS Command Code
(19) Sense Drive Status PHASE Command Result R/W W W R D7 0 0 D6 D5 D4 D3 D2 D1 D0 0 0 0 0 1 0 0 0 0 0 0 HDS DS1 DS0 ---------------- ST3 ------------------------REMARKS Command Code Status information about disk drive
(20) Invalid PHASE Command Result R/W W R D7 D6 D5 D4 D3 D2 D1 D0 ------------- Invalid Codes ------------------------------------ ST0 ---------------------REMARKS Invalid codes (no operationFDC goes to standby state) ST0 = 80H
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6.2 Register Descriptions
There are several status, data, and control registers in W83L517D. These registers are defined below: ADDRESS OFFSET base address + 0 base address + 1 base address + 2 base address + 3 base address + 4 base address + 5 base address + 7 READ SA REGISTER SB REGISTER DO REGISTER TD REGISTER MS REGISTER DT (FIFO) REGISTER DI REGISTER TD REGISTER DR REGISTER DT (FIFO) REGISTER CC REGISTER REGISTER WRITE
6.2.1
Status Register A (SA Register) (Read base address + 0)
This register is used to monitor several disk interface pins in PS/2 and Model 30 modes. In PS/2 mode, the bit definitions for this register are as follows:
7 6 5 4 3 2 1 0
DIR WP INDEX HEAD TRAK0 STEP DRV2 INIT PENDING
INIT PENDING (Bit 7): This bit indicates the value of the floppy disk interrupt output. DRV2# (Bit 6): 0 A second drive has been installed 1 A second drive has not been installed STEP (Bit 5): This bit indicates the complement of STEP# output. TRAK0# (Bit 4): This bit indicates the value of TRAK0# input.
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HEAD (Bit 3): This bit indicates the complement of HEAD# output. 0 side 0 1 side 1 INDEX# (Bit 2): This bit indicates the value of INDEX# output. WP# (Bit 1): 0 1 disk is write-protected disk is not write-protected
DIR (Bit 0) This bit indicates the direction of head movement. 0 1 outward direction inward direction
In PS/2 Model 30 mode, the bit definitions for this register are as follows:
7 6 5 4 3 2 1 0
DIR WP INDEX HEAD TRAK0 STEP F/F DRQ INIT PENDING
INIT PENDING (Bit 7): This bit indicates the value of the floppy disk interrupt output. DRQ (Bit 6): This bit indicates the value of DRQ output pin. STEP F/F (Bit 5): This bit indicates the complement of latched STEP# output. TRAK0 (Bit 4): This bit indicates the complement of TRAK0# input.
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HEAD# (Bit 3): This bit indicates the value of HEAD# output. 0 1 side 1 side 0
INDEX (Bit 2): This bit indicates the complement of INDEX# output. WP (Bit 1): 0 1 disk is not write-protected disk is write-protected
DIR# (Bit 0) This bit indicates the direction of head movement. 0 1 inward direction outward direction
6.2.2
Status Register B (SB Register) (Read base address + 1)
This register is used to monitor several disk interface pins in PS/2 and Model 30 modes. In PS/2 mode, the bit definitions for this register are as follows:
7 1 6 1 5 4 3 2 1 0
MOT EN A MOT EN B WE RDATA Toggle WDATA Toggle Drive SEL0
Drive SEL0 (Bit 5): This bit indicates the status of DO REGISTER bit 0 (drive select bit 0). WDATA Toggle (Bit 4): This bit changes state at every rising edge of the WD# output pin. RDATA Toggle (Bit 3): This bit changes state at every rising edge of the RDATA# output pin. WE (Bit 2): This bit indicates the complement of the WE# output pin. MOT EN B (Bit 1) This bit indicates the complement of the MOB# output pin.
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MOT EN A (Bit 0) This bit indicates the complement of the MOA# output pin. In PS/2 Model 30 mode, the bit definitions for this register are as follows:
7 6 5 4 3 2 1 0
DSC DSD WE F/F RDATA F/F WD F/F DSA DSB DRV2
DRV2# (Bit 7): 0 1 A second drive has been installed A second drive has not been installed
DSB# (Bit 6): This bit indicates the status of DSB# output pin. DSA# (Bit 5): This bit indicates the status of DSA# output pin. WD F/F(Bit 4): This bit indicates the complement of the latched WD# output pin at every rising edge of the WD# output pin. RDATA F/F(Bit 3): This bit indicates the complement of the latched RDATA# output pin . WE F/F (Bit 2): This bit indicates the complement of latched WE# output pin. DSD# (Bit 1): 0 Drive D has been selected 1 Drive D has not been selected DSC# (Bit 0): 0 Drive C has been selected 1 Drive C has not been selected
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6.2.3 Digital Output Register (DO Regis ter) (Write base address + 2)
The Digital Output Register is a write-only register controlling drive motors, drive selection, DRQ/IRQ enable, and FDC resetting. All the bits in this register are cleared by the MR pin. The bit definitions are as follows:
7 6 5 4 3 2 1-0
Drive Select: 00 select drive A 01 select drive B 10 select drive C 11 select drive D Floppy Disk Controller Reset Active low resets FDC DMA and INT Enable Active high enable DRQ/IRQ Motor Enable A. Motor A on when active high Motor Enable B. Motor B on when active high Motor Enable C. Motor C on when active high Motor Enable D. Motor D on when active high
6.2.4
Tape Drive Register (TD Register) (Read base address + 3)
This register is used to assign a particular drive number to the tape drive support mode of the data separator. This register also holds the media ID, drive type, and floppy boot drive information of the floppy disk drive. In normal floppy mode, this register includes only bit 0 and 1. The bit definitions are as follows:
7 X 6 X 5 X 4 X 3 X 2 X 1 0
Tape sel 0 Tape sel 1
If three mode FDD function is enabled (EN3MODE = 1 in CR9), the bit definitions are as follows:
7 6 5 4 3 2 1 0
Tape Sel 0 Tape Sel 1 Floppy boot drive 0 Floppy boot drive 1 Drive type ID0 Drive type ID1 Media ID0 Media ID1
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Media ID1 Media ID0 (Bit 7, 6): These two bits are read only. These two bits reflect the value of CR8 bit 3, 2. Drive type ID1 Drive type ID0 (Bit 5, 4): These two bits reflect two of the bits of CR7. Which two bits are reflected depends on the last drive selected in the DO REGISTER. Floppy Boot drive 1, 0 (Bit 3, 2): These two bits reflect the value of CR8 bit 1, 0. Tape Sel 1, Tape Sel 0 (Bit 1, 0): These two bits assign a logical drive number to the tape drive. Drive 0 is not available as a tape drive and is reserved as the floppy disk boot drive. TAPE SEL 1 0 0 1 1 TAPE SEL 0 0 1 0 1 DRIVE SELECTED None 1 2 3
6.2.5
Main Status Register (MS Register) (Read base address + 4)
The Main Status Register is used to control the flow of data between the microprocessor and the controller. The bit definitions for this register are as follows:
7 6 5 4 3 2 1 0
FDD 0 Busy, (D0B = 1), FDD number 0 is in the SEEK mode. FDD 1 Busy, (D1B = 1), FDD number 1 is in the SEEK mode. FDD 2 Busy, (D2B = 1), FDD number 2 is in the SEEK mode. FDD 3 Busy, (D3B = 1), FDD number 3 is in the SEEK mode. FDC Busy, (CB). A read or write command is in the process when CB = HIGH. Non-DMA mode, the FDC is in the non-DMA mode, this bit is set only during the execution phase in non-DMA mode. Transition to LOW state indicates execution phase has ended. DATA INPUT/OUTPUT, (DIO). If DIO= HIGH then transfer is from Data Register to the processor. If DIO = LOW then transfer is from processor to Data Register. Request for Master (RQM). A high on this bit indicates Data Register is ready to send or receive data to or from the processor.
6.2.6
Data Rate Register (DR Register) (Write base address + 4)
The Data Rate Register is used to set the transfer rate and write precompensation. The data rate of the FDC is programmed by the CC REGISTER for PC-AT and PS/2 Model 30 and PS/2 mode, and not by the DR REGISTER. The real data rate is determined by the most recent write to either of the DR REGISTER or CC REGISTER.
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7 6 5 0 4 3 2 1 0
DRATE0 DRATE1 PRECOMP0 PRECOMP1 PRECOMP2 POWER DOWN S/W RESET
S/W RESET (Bit 7): This bit is the software reset bit. POWER-DOWN (Bit 6): 0 FDC in normal mode 1 FDC in power-down mode PRECOMP2 PRECOMP1 PRECOMP0 (Bit 4, 3, 2): These three bits select the value of write precompensation. The following tables show the precompensation values for the combination of these bits. PRECOMP 2 0 0 0 0 1 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 PRECOMPENSATION DELAY 250K - 1 Mbps Default Delays 41.67 nS 83.34 nS 125.00 nS 166.67 nS 208.33 nS 250.00 nS 0.00 nS (disabled) 2 Mbps Tape drive Default Delays 20.8 nS 41.17 nS 62.5nS 83.3 nS 104.2 nS 125.00 nS 0.00 nS (disabled)
DATA RATE 250 KB/S 300 KB/S 500 KB/S 1 MB/S 2 MB/S
DEFAULT PRECOMPENSATION DELAYS 125 nS 125 nS 125 nS 41.67nS 20.8 nS
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DRATE1 DRATE0 (Bit 1, 0): These two bits select the data rate of the FDC and reduced write current control. 00 500 KB/S (MFM), 250 KB/S (FM), 01 300 KB/S (MFM), 150 KB/S (FM), 10 250 KB/S (MFM), 125 KB/S (FM), 11 1 MB/S (MFM), Illegal (FM),
RWC RWC RWC RWC
=1 =0 =0
=1
The 2 MB/S data rate for Tape drive is only supported by setting 01 to DRATE1 and DRATE0 bits, as well as setting 10 to DRT1 and DRT0 bits which are two of the Configure Register CRF4 or CRF5 bits in logic device 0. Please refer to the function description of CRF4 or CRF5 and data rate table for individual data rates setting.
6.2.7
FIFO Register (R/W base address + 5)
The Data Register consists of four status registers in a stack with only one register presented to the data bus at a time. T register stores data, commands, and parameters and provides diskette-drive status his information. Data bytes are passed through the data register to program or obtain results after a command. In the W83697HF, this register defaults to FIFO disabled mode after reset. The FIFO can change its value and enable its operation through the CONFIGURE command. Status Register 0 (ST0)
7-6 5 4 3 2 1-0
US1, US0 Drive Select: 00 Drive A selected 01 Drive B selected 10 Drive C selected 11 Drive D selected HD Head address: 1 Head selected 0 Head selected NR Not Ready: 1 Drive is not ready 0 Drive is ready EC Equipment Check: 1 When a fault signal is received from the FDD or the track 0 signal fails to occur after 77 step pulses 0 No error SE Seek end: 1 seek end 0 seek error IC Interrupt Code: 00 Normal termination of command 01 Abnormal termination of command 10 Invalid command issue 11 Abnormal termination because the ready signal from FDD changed state during command execution
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Status Register 1 (ST1)
7 6 5 4 3 2 1 0
Missing Address Mark. 1 When the FDC cannot detect the data address mark or the data address mark has been deleted. NW (Not Writable). 1 If a write Protect signal is detected from the diskette drive during execution of write data. ND (No DATA). 1 If specified sector cannot be found during execution of a read, write or verifly data. Not used. This bit is always 0. OR (Over Rum). 1 If the FDC is not serviced by the host system within a certain time interval during data transfer. DE (data Error).1 When the FDC detects a CRC error in either the ID field or the data field. Not used. This bit is always 0. EN (End of track). 1 When the FDC tries to access a sector beyond the final sector of a cylinder.
Status Register 2 (ST2)
7 6 5 4 3 2 1 0
MD (Missing Address Mark in Data Field). 1 If the FDC cannot find a data address mark (or the address mark has been deleted) when reading data from the media 0 No error BC (Bad Cylinder) 1 Bad Cylinder 0 No error SN (Scan Not satisfied) 1 During execution of the Scan command 0 No error SH (Scan Equal Hit) 1 During execution of the Scan command, if the equal condition is satisfied 0 No error WC (Wrong Cylinder) 1 Indicates wrong Cylinder DD (Data error in the Data field) 1 If the FDC detects a CRC error in the data field 0 No error CM (Control Mark) 1 During execution of the read data or scan command 0 No error Not used. This bit is always 0
Status Register 3 (ST3)
7 6 5 4 3 2 1 0
US0 Unit Select 0 US1 Unit Select 1 HD Head Address TS Two-Side TO Track 0 RY Ready WP Write Protected FT Fault
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6.2.8 Digital Input Register (DI Register) (Read base address + 7)
The Digital Input Register is an 8-bit read-only register used for diagnostic purposes. In a PC/XT or AT only Bit 7 is checked by the BIOS. When the register is read, Bit 7 shows the complement of DSKCHG#, while other bits of the data bus remain in tri-state. Bit definitions are as follows:
7 6 5 4 3 2 1 0
x
x
x
x
x x
x
x
DSKCHG
Reserved for the hard disk controller During a read of this register, these bits are in tri-state
In the PS/2 mode, the bit definitions are as follows:
7 6 1 5 1 4 1 3 1 2 1 0
HIGH DENS DRATE0 DRATE1
DSKCHG
DSKCHG (Bit 7): This bit indicates the complement of the DSKCHG# input. Bit 6-3: These bits are always a logic 1 during a read. DRATE1 DRATE0 (Bit 2, 1): These two bits select the data rate of the FDC. Refer to the DR register bits 1 and 0 for the settings corresponding to the individual data rates. HIGH DENS# (Bit 0): 0 500 KB/S or 1 MB/S data rate (high density FDD) 1 250 KB/S or 300 KB/S data rate In the PS/2 Model 30 mode, the bit definitions are as follows:
7 6 0 5 0 4 0 DRATE0 DRATE1 NOPREC DMAEN 3 2 1 0
DSKCHG
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DSKCHG (Bit 7): This bit indicates the status of DSKCHG# input. Bit 6-4: These bits are always a logic 1 during a read. DMAEN (Bit 3): This bit indicates the value of DO REGISTER bit 3. NOPREC (Bit 2): This bit indicates the value of CC REGISTER NOPREC bit. DRATE1 DRATE0 (Bit 1, 0): These two bits select the data rate of the FDC. 6.2.9 Configuration Control Register (CC Register) (Write base address + 7)
4 2
This register is used to control the dat a rate. In the PC/AT and PS/2 mode, the bit definitions are as follows:
7 6 5 3 1 0
x
x
x
x
x
x
DRATE0 DRATE1
X: Reserved Bit 7-2: Reserved. These bits should be set to 0. DRATE1 DRATE0 (Bit 1, 0): These two bits select the data rate of the FDC. In the PS/2 Model 30 mode, the bit definitions are as follows:
7 X 6 X 5 X 4 X 3 X DRATE0 DRATE1 NOPREC 2 1 0
X: Reserved Bit 7-3: Reserved. These bits should be set to 0. NOPREC (Bit 2): This bit indicates no pre-compensation. It has no function and can be set by software. DRATE1 DRATE0 (Bit 1, 0): These two bits select the data rate of the FDC.
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7 UART PORT
7.1 Universal Asynchronous Receiver/Transmitter (UART A)
The UARTs are used to convert parallel data into serial format on the transmit side and convert serial data to parallel format on the receiver side. The serial format, in order of transmission and reception, is a start bit, followed by five to eight data bits, a parity bit (if programmed) and one, one and half (five-bit format only) or two stop bits. The UARTs are capable of handling divisors of 1 to 65535 and producing a 16x clock for driving the internal transmitter logic. Provisions are also included to use this 16x clock to drive the receiver logic. The UARTs also support the MIDI data rate. Furthermore, the UARTs also include complete modem control capability and a processor interrupt system that may be software trailed to the computing time required to handle the communication link. The UARTs have a FIFO mode to reduce the number of interrupts presented to the CPU. In each UART, there are 16-byte FIFOs for both receive and transmit mode.
7.2
Register Address
7.2.1 UART Control Register (UCR) (Read/Write) The UART Control Register controls and defines the protocol for asynchronous data communications, including data length, stop bit, parity, and baud rate selection.
7 6 5 4 3 2 1 0
Data length select bit 0 (DLS0) Data length select bit 1(DLS1) Multiple stop bits enable (MSBE) Parity bit enable (PBE) Even parity enable (EPE) Parity bit fixed enable (PBFE) Set silence enable (SSE) Baudrate divisor latch access bit (BDLAB)
Bit 7: BDLAB. When this bit is set to a logical 1, designers can access the divisor (in 16-bit binary format) from the divisor latches of the baudrate generator during a read or write operation. When this bit is reset, the Receiver Buffer Register, the Transmitter Buffer Register, or the Interrupt Control Register can be accessed. Bit 6: SSE. A logical 1 forces the Serial Output (SOUT) to a silent state (a logical 0). Only IRTX is affected by this bit; the transmitter is not affected. Bit 5: PBFE. When PBE and PBFE of UCR are both set to a logical 1, (1) if EPE is logical 1, the parity bit is fixed as logical 0 to transmit and check. (2) if EPE is logical 0, the parity bit is fixed as logical 1 to transmit and check.
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TABLE 4-1 UART Register Bit Map Bit Number
Re g i s t e r A d d r e s s Ba s e 0 1 2 3 4 5 6 7
+0 BDLAB = 0
Receiver Buffer Register (Read Only) +0 Transmitter BDLAB = 0 Buffer Register (Write Only) +1 Interrupt Control BDLAB = 0 Register
RBR
RX Data Bit 0
RX Data Bit 1
RX Data Bit 2
RX Data Bit 3
RX Data Bit 4
RX Data Bit 5
RX Data Bit 6
RX Data Bit 7
TBR
TX Data Bit 0 RBR Data Ready Interrupt Enable (ERDRI) "0" if Interrupt Pending FIFO Enable
TX Data Bit 1 TBR Empty Interrupt Enable (ETBREI) Interrupt Status Bit (0) RCVR FIFO Reset Data Length Select Bit 1 (DLS1) Request to Send (RTS) Overrun Error (OER) DSR Toggling (TDSR) Bit 1 Bit 1
TX Data Bit 2 USR Interrupt Enable (EUSRI) Interrupt Status Bit (1) XMIT FIFO Reset Multiple Stop Bits Enable (MSBE) Loopback RI Input Parity Bit Error (PBER) RI Falling Edge (FERI) Bit 2 Bit 2
TX D ata Bit 3 HSR Interrupt Enable (EHSRI) Interrupt Status Bit (2)** DMA Mode Select Parity Bit Enable (PBE) IRQ Enable
TX Data Bit 4 0
TX Data Bit 5 0
TX Data Bit 6 0
TX Data Bit 7 0
ICR
+2
+2
+3
Interrupt Status Register (Read Only) UART FIFO Control Register (Write Only) UART Control Register
ISR
0
0
UFR
Reserved
Reversed
UCR
+4
Handshake Control Register UART Status Register
HCR
+5
USR
Data Length Select Bit 0 (DLS0) Data Terminal Ready (DTR) RBR Data Ready (RDR) CTS Toggling (TCTS) Bit 0 Bit 0
Even Parity Enable (EPE) Internal Loopback Enable Silent Byte Detected (SBD) Clear to Send (CTS) Bit 4 Bit 4
Parity Bit Fixed Enable PBFE) 0
FIFOs FIFOs Enabled Enabled ** ** RX RX Interrupt Interrupt Active Level Active Level (LSB) (MSB) Set Baudrate Silence Divisor Enable Latch (SSE) Access Bit (BDLAB) 0 0
+6
Handshake Status Register User Defined Register Baudrate Divisor Latch Low Baudrate Divisor Latch High
HSR
+7 +0 BDLAB = 1 +1 BDLAB = 1
UDR BLL
No Stop Bit Error (NSER) DCD Toggling (TDCD) Bit 3 Bit 3
TBR Empty (TBRE) Data Set Ready (DSR) Bit 5 Bit 5
TSR Empty (TSRE) Ring Indicator (RI) Bit 6 Bit 6
RX FIFO Error Indication (RFEI) ** Data Carrier Detect (DCD) Bit 7 Bit 7
BHL
Bit 8
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
Bit 15
*: Bit 0 is the least significant bit. The least significant bit is the first bit serially transmitted or received. **: These bits are always 0 in 16450 Mode.
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Bit 4: EPE. This bit describes the number of logic 1's in the data word bits and parity bit only when bit 3 is programmed. When this bit is set, an even number of logic 1's are sent or checked. When the bit is reset, an odd number of logic 1's are sent or checked. Bit 3: PBE. When this bit is set, the position between the last data bit and the stop bit of the SOUT will be stuffed with the parity bit at the transmitter. For the receiver, the parity bit in the same position as the transmitter will be detected. Bit 2: MSBE. This bit defines the number of stop bits in each serial character that is transmitted or received. (1) If MSBE is set to a logical 0, one stop bit is sent and checked. (2) If MSBE is set to a logical 1, and data length is 5 bits, one and a half stop bits are sent and checked. (3) If MSBE is set to a logical 1, and data length is 6, 7, or 8 bits, two stop bits are sent and checked. Bits 0 and 1: DLS0, DLS1. These two bits define the number of data bits that are sent or checked in each serial character.
TABLE 4-2 WORD LENGTH DEFINITION
DLS1 0 0 1 1
DLS0 0 1 0 1
DATA LENGTH 5 bits 6 bits 7 bits 8 bits
7.2.2 UART Status Register (USR) (Read/Write) This 8-bit register provides information about the status of the data transfer during communication.
7 6 5 4 3 2 1 0
RBR Data ready (RDR) Overrun error (OER) Parity bit error (PBER) No stop bit error (NSER) Silent byte detected (SBD) Transmitter Buffer Register empty (TBRE) Transmitter Shift Register empty (TSRE) RX FIFO Error Indication (RFEI)
Bit 7: RFEI. In 16450 mode, this bit is always set to a logic 0. In 16550 mode, this bit is set to a logic 1 when there is at least one parity bit error, no stop bit error or silent byte detected in the FIFO. In 16550 mode, this bit is cleared by reading from the USR if there are no remaining errors left in the FIFO.
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Bit 6: TSRE. In 16450 mode, when TBR and TSR are both empty, this bit will be set to a logical 1. In 16550 mode, if the transmit FIFO and TSR are both empty, it will be set to a logical 1. Other thanthese two cases, this bit will be reset to a logical 0. Bit 5: TBRE. In 16450 mode, when a data character is trans ferred from TBR to TSR, this bit will be set to a logical 1. If ETREI of ICR is a logical 1, an interrupt will be generated to notify the CPU to write the next data. In 16550 mode, this bit will be set to a logical 1 when the transmit FIFO is empty. It will be reset to a logical 0 when the CPU writes data into TBR or FIFO. Bit 4: SBD. This bit is set to a logical 1 to indicate that received data are kept in silent state for a full word time, including start bit, data bits, parity bit, and stop bits. In 16550 mode, it indicates the same condition for the data on top of the FIFO. When the CPU reads USR, it will clear this bit to a logical 0. Bit 3: NSER. This bit is set to a logical 1 to indicate that the received data have no stop bit. In 16550 mode, it indicates the same condition for the data on top of the FIFO. When the CPU reads USR, it will clear this bit to a logical 0. Bit 2: PBER. This bit is set to a logical 1 to indicate that the parity bit of received data is wrong. In 16550 mode, it indicates the same condition for the data on top of the FIFO. When the CPU reads USR, it will clear this bit to a logical 0. Bit 1: OER. This bit is set to a logical 1 to indicate received data have been overwritten by the next received data before they were read by the CPU. In 16550 mode, it indicates the same condition instead of FIFO full. When the CPU reads USR, it will clear this bit to a logical 0. Bit 0: RDR. This bit is set to a logical 1 to indicate received data are ready to be read by the CPU in the RBR or FIFO. After no data are left in the RBR or FIFO, the bit will be reset to a logical 0.
7.2.3 Handshake Control Register (HCR) (Read/Write) This register controls the pins of the UART used for handshaking peripherals such as modem, and controls the diagnostic mode of the UART.
7 0 6 0 5 0 Data terminal ready (DTR) Request to send (RTS) Loopback RI input IRQ enable Internal loopback enable 4 3 2 1 0
Bit 4: When this bit is set to a logical 1, the UART enters diagnostic mode by an internal loopback, as follows: (1) SOUT is forced to logical 1, and SIN is isolated from the communication link instead of the TSR. (2) Modem output pins are set to their inactive state. (3) Modem input pins are isolated from the communication link and connect internally as DTR (bit 0 of HCR) DSR, RTS ( bit 1 of HCR) CTS , Loopback RI input ( bit 2 of HCR) RI and IRQ enable ( bit 3 of HCR) DCD . Aside from the above connections, the UART operates normally. This method allows the CPU to test the UART in a convenient way.
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Bit 3: The UART interrupt output is enabled by setting this bit to a logic 1. In the diagnostic mode this bit is internally connected to the modem control input DCD . Bit 2: This bit is used only in the diagnostic mode. In the diagnostic mode this bit is internally connected to the modem control input RI . Bit 1: This bit controls the RTS output. The value of this bit is i nverted and output to RTS . Bit 0: This bit controls the DTR output. The value of this bit is inverted and output to DTR .
7.2.4 Handshake Status Register (HSR) (Read/Write) This register reflects the current state of four input pins for handshake peripherals such as a modem and records changes on these pins.
7 6 5 4 3 2 1 0
CTS toggling (TCTS) DSR toggling (TDSR) RI falling edge (FERI) DCD Clear to send (CTS) Data set ready (DSR) Ring indicator (RI) Data carrier detect (DCD)
t o g g l i n g ( T D C D )
Bit 7: This bit is the opposite of the DCD input. This bit is equivalent to bit 3 of HCR in loopback mode. Bit 6: This bit is the opposite of the RI input. This bit is equivalent to bit 2 of HCR in loopback mode. Bit 5: This bit is the opposite of the DSR input. This bit is equivalent to bit 0 of HCR in loopback mode. Bit 4: This bit is the opposite of the CTS input. This bit is equivalent to bit 1 of HCR in loopback mode. Bit 3: TDCD. This bit indicates that the DCD pin has changed state after HSR was read by the CPU.
Bit 2: FERI. This bit indicates that the RI pin has changed from low to high state after HSR was read by the CPU. Bit 1: TDSR. This bit indicates that the DSR pin has changed state after HSR was read by the CPU. Bit 0: TCTS. This bit indicates that the CTS pin has changed state after HSR was read.
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7.2.5 UART FIFO Control Register (UFR) (Write only) This register is used to control the FIFO functions of the UART.
7 6 5 4 3 2 1 0
FIFO enable Receiver FIFO reset Transmitter FIFO reset DMA mode select Reserved Reserved RX interrupt active level (LSB) RX interrupt active level (MSB)
Bit 6, 7: These two bits are used to set the active level for the receiver FIFO interrupt. For example, if the interrupt active level is set as 4 bytes, once there are more than 4 data characters in the receiver FIFO, the interrupt will be activated to notify the CPU to read the data from the FIFO. TABLE 4-3 FIFO TRIGGER LEVEL BIT 7 0 0 1 1 Bit 4, 5: Reserved Bit 3: When this bit is programmed to logic 1, the DMA mode will change from mode 0 to mode 1 if UFR bit 0 = 1. Bit 2: Setting this bit to a logical 1 resets the TX FIFO counter logic to initial state. This bit will clear to a logical 0 by itself after being set to a logical 1. Bit 1: Setting this bit to a logical 1 resets the RX FIFO counter logic to initial state. This bit will clear to a logical 0 by itself after being set to a logical 1. Bit 0: This bit enables the 16550 (FIFO) mode of the UART. This bit should be set to a logical 1 before other bits of UFR are programmed. BIT 6 0 1 0 1 RX FIFO INTERRUPT ACTIVE LEVEL (BYTES) 01 04 08 14
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7.2.6 Interrupt Status Register (ISR) (Read only) This register reflects the UART interrupt status, which is encoded by different interrupt sources into 3 bits.
7 6 5 0 4 0 0 if interrupt pending Interrupt Status bit 0 Interrupt Status bit 1 Interrupt Status bit 2 FIFOs enabled FIFOs enabled 3 2 1 0
Bit 7, 6: These two bits are set to a logical 1 when UFR bit 0 = 1. Bit 5, 4: These two bits are always logic 0. Bit 3: In 16450 mode, this bit is 0. In 16550 mode, both bit 3 and 2 are set to a logical 1 when a time-out interrupt is pending. Bit 2, 1: These two bits identify the priority level of the pending interrupt, as shown in the table below. Bit 0: This bit is a logical 1 if there is no interrupt pending. If one of the interrupt sources has occurred, this bit will be set to a logical 0. TABLE 4-4 INTERRUPT CONTROL FUNCTION ISR
Bit 3 0 0 0 Bit 2 0 1 1 Bit 1 0 1 0 Bit 0 1 0 0 Interrupt priority First Second Interrupt Type UART Receive Status RBR Data Ready
INTERRUPT SET AND FUNCTION
Interrupt Source No Interrupt pending 1. OER = 1 2. PBER =1 Read USR 1. Read RBR 2. Read RBR until FIFO data under active level Read RBR 3. NSER = 1 4. SBD = 1 1. RBR data ready 2. FIFO interrupt active level reached Clear Interrupt -
1
1
0
0
Second
FIFO Data Timeout
Data present in RX FIFO for 4 characters period of time since last access of RX FIFO. TBR empty
0
0
1
0
Third
TBR Empty
1. Write data into TBR 2. Read ISR (if priority is third)
0
0
0
0
Fourth
Handshake status
1. TCTS = 1 3. FERI = 1
2. TDSR = 1 4. TDCD = 1
Read HSR
** Bit 3 of ISR is enabled when bit 0 of UFR is logical 1.
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7.2.7 Interrupt Control Register (ICR) (Read/Write) This 8-bit register allows the five types of controller interrupts to activate the interrupt output signal separately. The interrupt system can be totally disabled by resetting bits 0 through 3 of the Interrupt Control Register (ICR). A selected interrupt can be enabled by setting the appropriate bits of this register to a logical 1.
7 0 6 0 5 0 4 0 RBR data ready interrupt enable (ERDRI) TBR empty interrupt enable (ETBREI) UART receive status interrupt enable (EUSRI) Handshake status interrupt enable (EHSRI) 3 2 1 0
Bit 7-4: These four bits are always logic 0. Bit 3: EHSRI. Setting this bit to a logical 1 enables the handshake status register interrupt. Bit 2: EUSRI. Setting this bit to a logical 1 enables the UART status register interrupt. Bit 1: ETBREI. Setting this bit to a logical 1 enables the TBR empty interrupt. Bit 0: ERDRI. Setting this bit to a logical 1 enables the RBR data ready interrupt.
7.2.8 Programmable Baud Generator (BLL/BHL) (Read/Write) Two 8-bit registers, BLL and BHL, compose a programmable baud generator that uses 24 MHz to generate
16
a 1.8461 MHz frequency and divides it by a divisor from 1 to 2 -1. The output frequency of the baud generator is the baud rate multiplied by 16, and this is the base frequency for the transmitter and receiver. The table in the next page illustrates the use of the baud generator with a frequency of 1.8461 MHz. In highspeed UART mode (refer to CR0C bit7 and CR0C bit6), the programmable baud generator directly uses 24 MHz and the same divisor as the normal speed divisor. In high-speed mode, the data transmission rate can be as high as 1.5M bps.
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7.2.9 User-defined Register (UDR) (Read/Write) This is a temporary register that can be accessed and defined by the user. TABLE 4-5 BAUD RATE TABLE BAUD RATE FROM DIFFERENT PRE-DIVIDER Pre-Div: 13 1.8461M Hz 50 75 110 134.5 150 300 600 1200 1800 2000 2400 3600 4800 7200 9600 19200 38400 57600 115200 Pre-Div:1.625 14.769M Hz 400 600 880 1076 1200 2400 4800 9600 14400 16000 19200 28800 38400 57600 76800 153600 307200 460800 921600 Pre-Div: 1.0 24M Hz 650 975 1430 1478.5 1950 3900 7800 15600 23400 26000 31200 46800 62400 93600 124800 249600 499200 748800 1497600 Decimal divisor used to generate 16X clock 2304 1536 1047 857 768 384 192 96 64 58 48 32 24 16 12 6 3 2 1 Error Percentage between desired and actual ** ** 0.18% 0.099% ** ** ** ** ** 0.53% ** ** ** ** ** ** ** ** **
** The percentage error for all baud rates, except where indicated otherwise, is 0.16%. Note. Pre-Divisor is determined by CRF0 of UART A
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8 INFRARED (IR) PORT (FOR W83L517D ONLY)
The Infrared (IR) function provides a point-to-point (or multi-point to multi-point) wireless communication which can operate under various transmission protocols including IrDA 1.0 SIR, IrDA 1.1 MIR (1.152 Mbps), IrDA 1.1 FIR (4 Mbps), SHARP ASK-IR, and remote control (NEC, RC-5, advanced RC-5, and RECS-80 protocol).
8.1 IR Register Description
When bank select enable bit (ENBNKSEL, the bit 0 in CRF0 of logic device 6) is set, legacy IR will be switched to Advanced IR, and eight Register Sets can then be accessible. These Register Sets control enhanced IR, SIR. Also, a superior traditional SIR function can be used with enhanced features such as 32byte transmitter/receiver FIFOs, non-encoding IRQ identify status register, and automatic flow control. The MIR/FIR and remote control registers are also defined in these Register Sets. Structure of these Register Sets is as shown below.
Reg 7 Reg 6 Reg 5 Reg 4 BDL/SSR Reg 2 Reg 1 Reg 0 Set 0 Set 1 Set 2 Set 3 Set 4 Set 5 Set 6 Set 7
All in one Reg to Select SSR
*Set 0, 1 are legacy/Advanced UART Registers *Set 2~7 are Advanced UART Registers
Each of these register sets has a common register, namely Sets Select Register (SSR), in order to switch to another register set. The summary description of these Sets is given below.
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Set 0 1 2 3 4 5 6 7
Sets Description Legacy/Advanced IR Control and Status Registers. Legacy Baud Rate Divisor Register. Advanced IR Control and Status Registers. Version ID and Mapped Control Registers. Transmitter/Receiver/Timer Counter Registers and IR Control Registers. Flow Control and IR Control and Frame Status FIFO Registers. IR Physical Layer Control Registers Remote Control and IR front-end Module Selection Registers.
8.2 Set0-Legacy/Advanced IR Control and Status Registers
Address Offset 0 1 2 3 4 5 6 7 Register Name RBR/TBR ICR ISR/UFR UCR/SSR HCR USR HSR UDR/ESCR Register Description Receiver/Transmitter Buffer Registers Interrupt Control Register Interrupt Status or IR FIFO Control Register IR Control or Sets Select Register Handshake Control Register IR Status Register Handshake Status Register User Defined Register
8.2.1 Set0.Reg0 - Receiver/Transmitter Buffer Registers (RBR/TBR) (Read/Write) Receiver Buffer Register is read only and Transmitter Buffer Register is write only. When operating in the PIO mode, the port is used to Receive/Transmit 8-bit data. When function as a legacy IR, this port only supports PIO mode. If set in the advanced IR mode and configured as MIR/FIR/Remote IR, this port can support DMA transmission. Two DMA channels can be used simultaneously, one for TX DMA and the other for RX DMA. Therefore, single DMA channel is also supported when the bit of D_CHSW (DMA Channel Swap, in Set2.Reg2.Bit3) is set and the TX/RX DMA channel is swapped. Note that two DMA channels can be defined in configure register CR2A, which selects DMA channel or disables DMA channel. If only RX DMA channel is enabled while TX DMA channel is disabled, then the single DMA channel will be selected.
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8.2.2 Set0.Reg1 - Interrupt Control Register (ICR) Mode Legacy IR Advanced IR B7 0 ETMRI B6 0 EFSFI B5 0 ETXTHI B4 0 EDMAI B3 0 0 B2 EUSRI B1 ETBREI B0 ERDRI ERBRI
EUSRI/ TXURI ETBREI
The advanced IR functions including Advanced SIR/ASK-IR, MIR, FIR, or Remote IR are described below. Bit 7: Legacy IR Mode: Not used. A read will return 0. Advanced IR Mode: ETMRI - Enable Timer Interrupt A write to 1 will enable timer interrupt. Bit 6: Legacy IR Mode: Not used. A read will return 0. MIR, FIR mode: EFSFI - Enable Frame Status FIFO Interrupt A write to 1 will enable frame status FIFO interrupt. Advanced SIR/ASK-IR, Remote IR: Not used. Bit 5: Legacy IR Mode: Not used. A read will return 0. Advanced SIR/ASK-IR, MIR, FIR, Remote IR: ETXTHI - Enable Transmitter Threshold Interrupt A write to 1 will enable transmitter threshold interrupt. Legacy IR Mode: Not used. A read will return 0. MIR, FIR, Remote IR: EDMAI - Enable DMA Interrupt. A write to 1 will enable DMA interrupt. Reserved. A read will return 0. Legacy IR Mode: EUSRI - Enable USR (IR Status Register) Interrupt A write to 1 will enable IR status register interrupt. Advanced SIR/ASK-IR: EUSRI - Enable USR (IR Status Register) Interrupt A write to 1 will enable IR status register interrupt. MIR, FIR, Remote Control ler: EHSRI/ETXURI - Enable USR Interrupt or Enable Transmitter Underrun Interrupt A write to 1 will enable USR interrupt or enable transmitter underrun interrupt. ETBREI - Enable TBR (Transmitter Buffer Register) Empty Interrupt A write to 1 will enable the transmitter buffer register empty interrupt. ERBRI - Enable RBR (Receiver Buffer Register) Interrupt A write to 1 will enable receiver buffer register interrupt.
Bit 4:
Bit 3: Bit 2:
Bit 1: Bit 0:
8.2.3 Set0.Reg2 - Interrupt Status Register/IR FIFO Control Register (ISR/UFR) Interrupt Status Register (Read Only) Publication Release Date: Jul. 2002 Revision 1.0
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Mode Legacy IR B7 B6 B5 B4 0 B3 IID2 B2 IID1 USR_I/ FEND_I 0 B1 IID0 B0 IP
FIFO Enable FIFO Enable 0 FSF_I 0 TXTH_I 1
Advanced IR TMR_I
Reset Value
DMA_I HS_I 0 0
TXEMP_I RXTH_I 1 0
0
Legacy IR: This register reflects the Legacy IR interrupt status, which is encoded by different interrupt sources into 3 bits. Bit 7, 6: These two bits are set to a logical 1 when UFR bit 0 = 1. Bit 5, 4: These two bits are always logical 0. Bit 3: When not in FIFO mode, this bit is always 0. In FIFO mode, both bit 3 and 2 are set to logical 1 when a time-out interrupt is pending. Bit 2, 1: These bits identify the priority level of the pending interrupt, as shown in the table below. Bit 0: This bit is a logical 1 if there is no interrupt pending. If one of the interrupt sources has occurred, this bit will be set to logical 0. TABLE: INTERRUPT CONTROL FUNCTION ISR
Bit 3 0 0 Bit 2 0 1 Bit 1 0 1 Bit 0 1 0
INTERRUPT SET AND FUNCTION
Interrupt priority First Interrupt Type Interrupt Source Clear Interrupt
IR Receive Status
No Interrupt pending 1. OER = 1 2. PBER =1
Read USR
3. NSER = 1 4. SBD = 1 0 1 0 0 Second RBR Data Ready 1. RBR data ready 2. FIFO interrupt active level reached 1 1 0 0 Second FIFO Data Time-out Data present in RX FIFO for 4 characters period of time since last access of RX FIFO. TBR empty 1. Read RBR 2. Read RBR until FIFO data under active level Read RBR
0
0
1
0
Third
TBR Empty
1. Write data into TBR 2. Read I R (if priority is S third)
** Bit 3 of ISR is enabled when bit 0 of UFR is a logical 1.
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Advanced IR: Bit 7: TMR_I - Timer Interrupt. Set to 1 when timer counts to logical 0. This bit is valid when: (1) the timer registers are defined in Set4.Reg0 and Set4.Reg1; (2) EN_TMR(Enable Timer, in Set4.Reg2.Bit0) is set to 1; (3) ENTMR_I (Enable Timer Interrupt, in Set0.Reg1.Bit7) is set to 1. MIR, FIR modes: FSF_I - Frame Status FIFO Interrupt. Set to 1 when Frame Status FIFO is equal or larger than the threshold level or Frame Status FIFO time-out occurs. Cleared to 0 when Frame Status FIFO is below the threshold level. Advanced SIR/ASK-IR, Remote IR modes: Not used. TXTH_I - Transmitter Threshold Interrupt. Set to 1 if the TBR (Transmitter Buffer Register) FIFO is below the threshold level. Cleared to 0 if the TBR (Transmitter Buffer Register) FIFO is above the threshold level. Bit 4: MIR, FIR, Remote IR Modes: DMA_I - DMA Interrupt. Set to 1 if the DMA controller 8237A sends a TC (Terminal Count) to I/O device which might be a Transmitter TC or a Receiver TC. Cleared to 0 when this register is read. HS_I - Handshake Status Interrupt. Set to 1 when the Handshake Status Register has a toggle. Cleared to 0 when Handshake Status Register (HSR) is read. Note that in all IR modes including SIR, ASK-IR, MIR, FIR, and Remote Control IR, this bit defaults to be inactive unless IR Handshake Status Enable (IRHS_EN) is set to 1. Bit 2: Advanced SIR/ASK-IR modes: USR_I - IR Status Interrupt. Set to 1 when overrun error, parity error, stop bit error, or silent byte error is detected and registered in the IR Status Register (USR). Cleared to 0 when USR is read. MIR, FIR modes: FEND_I - Frame End Interrupt. Set to 1 when (1) a frame has a grace end to be detected where the frame signal is defined in the physical layer of IrDA version 1.1; (2) abort signal or illegal signal has been detected during receiving valid data. Cleared to 0 when this register is read. Remote Controller Mode: Not used. Bit 1: TXEMP_I - Transmitter Empty. Set to 1 when transmitter (or, say, FIFO + Transmitter) is empty. Cleared to 0 when this register is read. RXTH_I - Receiver Threshold Interrupt. Set to 1 when (1) the Receiver Buffer Register (RBR) is equal or larger than the threshold level; or (2) RBR time-out occurs if the receiver buffer register has valid data and is below the threshold level. Cleared to 0 when RBR is less than threshold level after reading RBR.
Bit 6:
Bit 5:
Bit 3:
Bit 0:
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IR FIFO Control Register (UFR): Mode Bit 7 Bit 6 RXFTL0 (LSB) RXFTL0 (LSB) 0 Bit 5 0 TXFTL1 (MSB) 0 Bit 4 0 TXFTL0 (LSB) 0 Bit 3 0 0 0 Bit 2 Bit 1 Bit 0
Legacy IR RXFTL1 (MSB) Advanced RXFTL1 IR (MSB)
Reset Value 0
TXF_RST RXF_RST EN_FIFO TXF_RST RXF_RST EN_FIFO 0 0 0
Legacy IR: This register is used to control FIFO functions of the IR. Bit 6, 7: These two bits are used to set the active level for the receiver FIFO interrupt. For example, if the interrupt active level is set as 4 bytes and there are more than 4 data characters in the receiver FIFO, the interrupt will be activated to notify CPU to read the data from FIFO. TABLE: FIFO TRIGGER LEVEL Bit 7 0 0 1 1 Bit 6 0 1 0 1 RX FIFO Interrupt Active Level (Bytes) 01 04 08 14
Bit 4, 5: Reserved Bit 3: When this bit is programmed to logic 1, the DMA mode will change from mode 0 to mode 1 if UFR bit 0 = 1. Bit 2: Setting this bit to a logical 1 resets the TX FIFO counter logic to its initial state. This bit will be cleared to logical 0 by itself after being set to logical 1. Bit 1: Setting this bit to logical 1 resets the RX FIFO counter logic to its initial state. This bit will be cleared to a logical 0 by itself after being set to logical 1. Bit 0: This bit enables the 16550 (FIFO) mode of the IR. This bit should be set to logical 1 before other bits of UFR can be programmed.
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Advanced IR: Bit 7, 6: RXFTL1, 0 - Receiver FIFO Threshold Level Its definition is the same as Legacy IR. RXTH_I becomes 1 when the Receiver FIFO Threshold Level is equal to or larger than the defined value shown as follow.
RXFTL1, 0 (Bit 7, 6) 00 01 10 11
RX FIFO Threshold Level (FIFO Size: 16-byte ) 1 4 8 14
RX FIFO Threshold Level (FIFO Size: 32-byte) 1 4 16 26
Note that the FIFO Size is selectable in SET2.Reg4. Bit 5, 4: TXFTL1, 0 - Transmitter FIFO Threshold Level TXTH_I (Transmitter Threshold Level Interrupt) is set to 1 when the Transmitter Threshold Level is less than the programmed value shown below.
TXFTL1, 0 (Bit 5, 4) 00 01 10 11
TX FIFO Threshold Level (FIFO Size: 16-byte ) 1 3 9 13
TX FIFO Threshold Level (FIFO Size: 32-byte) 1 7 17 25
Bit 3 ~0
Same as in Legacy IR Mode
8.2.4 Set0.Reg3 - IR Control Register/Set Select Register (UCR/SSR): These two registers share the same address. In all Register Sets, Set Select Register (SSR) can be programmed to select a desired Set, but IR Control Register can only be programmed in Set 0 and Set 1. In other words, writing to Reg3 in Sets other than Set 0 and Set 1 will not affect IR Control Register. The mapping of entry Set and programming value is shown below.
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SSR Bits 7 0 1 1 1 1 1 1 1 1 1 1 1 1 1 6
x
Selected 2
x
5
x
4
x
3
x
1
x
0
x
Hex Value 0x03 0xE0 0xE4 0xE8 0xEC 0xF0 0xF4
Set Set 0 Set1 Set 2 Set 3 Set 4 Set 5 Set 6 Set 7
Any combination except those used in SET 2~7 1 1 1 1 1 1 0 0 0 1 1 1 0 0 1 1 0 0 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0
8.2.5 Set0.Reg4 - Handshake Control Register (HCR) Mode Legacy IR
Reset Value
B7 0
B6 0
B5 0
B4 XLOOP SIR_PLS 0
B3 EN_IRQ TX_WT 0
B2 0 EN_DMA 0
B1 0 0 0
B0 0 0 0
Advanced IR AD_MD2 AD_MD1 AD_MD0 0 1 1
Legacy IR Register: This register controls the pins of IR used for handshaking with peripherals such as modem, and controls the diagnostic mode of IR. Bit 4: When this bit is set to logical 1, the legacy IR enters diagnostic mode by an internal loopback: IRTX is forced to logical 0, and IRRX is isolated from the communication link instead of the TSR. Bit 3: The legacy IR interrupt output is enabled by setting this bit to logic 1.
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Advanced IR Register: Bit 7~5 Advanced SIR/ASK-IR, MIR, FIR, Remote Controller Modes: AD_MD2~0 - Advanced IR/Infrared Mode Select. These registers are active when Advanced IR Select (ADV_SL, in Set2.Reg2.Bit0) is set to 1. Operational mode selection is defined as follows. When backward operation occurs, these registers will be reset to 0 and fall back to legacy IR mode. AD_MD2~0 (Bit 7, 6, 5) 000 001 010 011 100 101 110 111 Bit 4: Selected Mode Reserved Low speed MIR (0.576M bps) Advanced ASK-IR Advanced SIR High Speed MIR (1.152M bps) FIR (4M bps) Consumer IR Reserved
MIR, FIR Modes: SIR_PLS - Send Infrared Pulse Writing 1 to this bit will send a 2 s long infrared pulse after physical frame end. This is to signal to SIR that the high speed infrared is still in. This bit will be auto cleared by hardware. Other Modes: Not used. Bit 3: MIR, FIR modes: TX_WT - Transmission Waiting If this bit is set to 1, the transmitter will wait for TX FIFO to reach threshold level or transmitter time-out before it begins to transmit data; this prevents short queues of data bytes from transmitting prematurely. This is to avoid Underrun. Other Modes: Not used. Bit 2: MIR, FIR modes: EN_DMA - Enable DMA Enable DMA function for transmitting or receiving. Before using this, the DMA channel should be selected first. If only RX DMA channel is set and TX DMA channel is disabled, then the single DMA channel is used. In the single channel system, the bit of D_CHSW (DMA channel swap, in Set 2.Reg2.Bit3) will determine if it is RX_DMA or TX_DMA channel. Other modes: Not used. Bit 1, 0: RTS, DTR Functional definitions are the same as in legacy IR mode.
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8.2.6 Set0.Reg5 - IR Status Register (USR) Mode Legacy IR Reset Value B7 RFEI 0 B6 TSRE TSRE 0 B5 TBRE TBRE 0 B4 SBD 0 B3 NSER 0 B2 PBER 0 B1 OER OER 0 B0 RDR RDR 0
Advanced IR LB_INFR
MX_LEX PHY_ERR CRC_ERR
Legacy IR Register: These registers are defined the same as previous description. Advanced IR Register: Bit 7: MIR, FIR Modes: LB_INFR - Last Byte In Frame End Set to 1 when last byte of a frame is in the bottom of FIFO. This bit separates one frame from another when RX FIFO has more than one frame. Bit 6, 5: Bit 4: Same as legacy IR description. MIR, FIR modes: MX_LEX - Maximum Frame Length Exceed Set to 1 when the length of a frame from the receiver has exceeded the programmed frame length defined in SET4.Reg6 and Reg5. If this bit is set to 1, the receiver will not receive any data to RX FIFO. Bit 3: MIR, FIR modes: PHY_ERR - Physical Layer Error Set to 1 when an illegal data symbol is received. The illegal data symbol is defined in physical layer of IrDA version 1.1. When this bit is set to 1, the decoder of receiver will be aborted and a frame end signal is set to 1. Bit 2: MIR, FIR Modes: CRC_ERR - CRC Error Set to 1 when an attached CRC is erroneous. Bit 1, 0: OER - Overrun Error, RDR - RBR Data Ready Definitions are the same as legacy IR. 8.2.7 Set0.Reg6 - Reserved Set0.Reg7 - User Defined Register (UDR/AUDR) Mode Bit 7 Bit 6 Bit 6 UNDRN 0 Bit 5 Bit 5 RX_BSY/ RX_IP 0 Bit 4 Bit 4 LST_FE/ RX_PD 0 Bit 3 Bit 3 S_FEND 0 Bit 2 Bit 2 0 0 Bit 1 Bit 1 LB_SF 0 Bit 0 Bit 0 RX_TO 0 Legacy IR Bit 7 Advanced FLC_ACT IR Reset Value 0 Legacy IR Register:
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This is a temporary register that can be accessed and defined by the user. Advanced IR Register: Bit 7 MIR, FIR Modes: FLC_ACT - Flow Control Active Set to 1 when the flow control occurs. Cleared to 0 when this register is read. Note that this will be affected by Set5.Reg2 which controls the SIR mode switches to MIR/FIR mode or MIR/FIR mode operated in DMA function switches to SIR mode. Bit 6 MIR, FIR Modes: UNDRN - Underrun Set to 1 when transmitter is empty and S_FEND (bit 3 of this register) is not set in PIO mode or no TC (Terminal Count) in DMA mode. Cleared to 0 after a write to 1. Bit 5 MIR, FIR Modes: RX_BSY - Receiver Busy Set to 1 when receiver is busy or active in process. Remote IR mode: RX_IP - Receiver in Process Set to 1 when receiver is in process. Bit 4: MIR, FIR modes: LST_FE - Lost Frame End Set to 1 when a frame end in a entire frame is lost. Cleared to 0 when this register is read. Remote IR Modes: RX_PD - Receiver Pulse Detected Set to 1 when one or more remote pulses are detected. Cleared to 0 when this register is read. Bit 3 MIR, FIR Modes: S_FEND - Set a Frame End Set to 1 when trying to terminate the frame, that is, the procedure od PIO command is An Entire Frame = Write Frame Data (First) + Write S_FEND (Last) This bit should be set to 1, if used in PIO mode, to avoid transmitter underrun. Note that setting S_FEND to 1 is equivalent to TC (Terminal Count) in DMA mode. Therefore, this bit should be set to 0 in DMA mode. Reserved. MIR, FIR Modes: LB_SF - Last Byte Stay in FIFO A 1 in this bit indicates one or more frame ends remain in receiver FIFO. MIR, FIR, Remote IR Modes: RX_TO - Receiver FIFO or Frame Status FIFO time-out Set to 1 when receiver FIFO or frame status FIFO time-out occurs
Bit 2: Bit 1:
Bit 0:
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8.3 Set1 - Legacy Baud Rate Divisor Register
Address Offset 0 1 2 3 4 5 6 7 Register Name BLL BHL ISR/UFR UCR/SSR HCR USR HSR UDR/ESCR Register Description Baud Rat e Divisor Latch (Low Byte) Baud Rate Divisor Latch (High Byte) Interrupt Status or IR FIFO Control Register IR Control or Sets Select Register Handshake Control Register IR Status Register Handshake Status Register User Defined Register
8.3.1 Set1.Reg0~1 - Baud Rate Divisor Latch (BLL/BHL) These two registers of BLL and BHL are baud rate divisor latch in the legacy SIR/ASK-IR mode. Accessing these registers in Advanced IR mode will cause backward operation, that is, UART will fall back to legacy SIR mode and clear some register values as shown in the following table. Set & Register Set 0.Reg 4 Set 2.Reg 2 Set 4.Reg 3 Advanced Mode DIS_BACK=x Bit 7~5 Bit 0, 5, 7 Bit 2, 3 Legacy Mode DIS_BACK=0 Bit 5, 7 -
Note that DIS_BACK=1 (Disable Backward operation) in legacy SIR/ASK-IR mode will not affect any register which is meaningful in legacy SIR/ASK-IR. 8.3.2 Set1.Reg 2~7 These registers are defined the same as Set 0 registers.
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8.4 Set2 - Interrupt Status or IR FIFO Control Register (ISR/UFR)
These registers are only used in advanced modes. Address Offset 0 1 2 3 4 5 6 7 Register Name ABLL ABHL ADCR1 SSR ADCR2 Reserved TXFDTH RXFDTH Register Description Advanced Baud Rate Divisor Latch (Low Byte) Advanced Baud Rate Divisor Latch (High Byte) Advanced IR Control Register 1 Sets Select Register Advanced IR Control Register 2 Transmitter FIFO Depth Receiver FIFO Depth
8.4.1 Reg0, 1 - Advanced Baud Rate Divisor Latch (ABLL/ABHL) These two registers are the same as legacy IR baud rate divisor latch in SET 1.Reg0~1. In advanced SIR/ASK-IR mode, the user should program these registers to set baud rate. This is to prevent backward operations from occurring. 8.4.2 Reg2 - Advanced IR Control Register 1 (ADCR1) Mode Advanced IR
Reset Value
Bit 7 BR_OUT 0
Bit 6 0
Bit 5 EN_LOUT 0
Bit 4 Bit 3 Bit 2 ALOOP D_CHSW DMATHL 0 0 0
Bit 1 DMA_F 0
Bit 0 ADV_SL 0
Bit 7:
Bit 6: Bit 5:
Bit 4: Bit 3:
Bit 2:
BR_OUT - Baud Rate Clock Output When written to 1, the programmed baud rate clock will be output to DTR pin. This bit is only used to test baud rate divisor. Reserved, write 0. EN_LOUT - Enable Loopback Output A write to 1 will enable transmitter to output data to IRTX pin when loopback operation occurs. Internal data can be verified through an output pin by setting this bit. ALOOP - All Mode Loopback A write to 1 will enable loopback in all modes. D_CHSW - DMA TX/RX Channel Swap If only one DMA channel operates in MIR/FIR mode, then the DMA channel can be swapped. D_CHSW DMA Channel Selected 0 Receiver (Default) 1 Transmitter A write to 1 will enable output data when ALOOP=1. DMATHL - DMA Threshold Level Set DMA threshold level as shown in the following table.
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DMATHL TX FIFO Threshold 16-Byte 0 1 13 23 32-Byte 13 7 RX FIFO Threshold (16/32-Byte) 4 10
Bit 1:
DMA_F - DMA Fairness DMA_F 0 1 Function Description DMA request (DREQ) is forced inactive after 10.5us No effect DMA request.
Bit 0:
ADV_SL - Advanced Mode Select A write to 1 selects advanced mode.
8.4.3 Reg3 - Sets Select Register (SSR) Reading this register returns E0H. Writing a value selects Register Set. Reg. SSR
Refault Value
Bit 7 SSR7 1
Bit 6 SSR6 1
Bit 5 SSR5 1
Bit 4 SSR4 0
Bit 3 SSR3 0
Bit 2 SSR2 0
Bit 1 SRR1 0
Bit 0 SRR0 0
8.4.4 Reg4 - Advanced IR Control Register 2 (ADCR2)
Mode Advanced IR Reset Value Bit 7: Bit 7 DIS_BACK 0 Bit 6 0 Bit 5 PR_DIV1 0 Bit 4 PR_DIV0 0 Bit 3 Bit 2 Bit 1 TX_FSZ1 0 Bit 0 TXFSZ0 0 RX_FSZ1 RX_FSZ0 0 0
Bit 6: Bit 5, 4:
DIS_BACK - Disable Backward Operation A write to 1 disables backward legacy IR mode. When operating in legacy SIR/ASK-IR mode, this bit should be set to 1 to avoid backward operation. Reserved, write 0. PR_DIV1~0 - Pre-Divisor 1~0. These bits select pre-divisor for external input clock 24M Hz. The clock goes through the predivisor, then input to baud rate divisor of IR. PR_DIV1~0 Pre-divisor Max. Baud Rate 00 13.0 115.2K bps 01 1.625 921.6K bps 10 6.5 230.4K bps 11 1 1.5M bps RX_FSZ1~0 - Receiver FIFO Size 1~0 These bits setup receiver FIFO size when FIFO is enable.
Bit 3, 2:
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RX_FSZ1~0 00 01 1X Bit 1, 0: RX FIFO Size 16-Byte 32-Byte Reserved
TX_FSZ1~0 - Transmitter FIFO Size 1~0 These bits setup transmitter FIFO size when FIFO is enable. TX_FSZ1~0 00 01 1X TX FIFO Size 16-Byte 32-Byte Reserved
TABLE: SIR Baud Rate Pre-Div: 13 1.8461M Hz 50 75 110 134.5 150 300 600 1200 1800 2000 2400 3600 4800 7200 9600 19200 38400 57600 115200 BAUD RATE FROM DIFFERENT PRE-DIVIDER Pre-Div:1.625 Pre-Div: 1.0 Decimal divisor used Error Percentage between 14.769M Hz 24M Hz to generate 16X clock desired and actual 400 650 2304 ** 600 975 1536 ** 880 1430 1047 0.18% 1076 1478.5 857 0.099% 1200 1950 768 ** 2400 3900 384 ** 4800 7800 192 ** 9600 15600 96 ** 14400 23400 64 ** 16000 26000 58 0.53% 19200 31200 48 ** 28800 46800 32 ** 38400 62400 24 ** 57600 93600 16 ** 76800 124800 12 ** 153600 249600 6 ** 307200 499200 3 ** 460800 748800 2 ** 921600 1497600 1 **
** The percentage error for all baud rates, except where indicated otherwise, is 0.16%.
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8.4.5 Reg6 - Transmitter FIFO Depth (TXFDTH) (Read Only) Mode Advanced IR
Reset Value
Bit 7 0 0
Bit 6 0 0
Bit 5 TXFD5 0
Bit 4 TXFD4 0
Bit 3 TXFD3 0
Bit 2 TXFD2 0
Bit 1 TXFD1 0
Bit 0 TXFD1 0
Bit 7~6: Bit 5~0:
Reserved, Read 0. Reading these bits returns the current transmitter FIFO depth, that is, the number of bytes left in the transmitter FIFO.
8.4.6 Reg7 - Receiver FIFO Depth (RXFDTH) (Read Only) Mode Advanced IR
Reset Value
Bit 7 0 0
Bit 6 0 0
Bit 5 RXFD5 0
Bit 4 RXFD4 0
Bit 3 RXFD3 0
Bit 2 RXFD2 0
Bit 1 RXFD1 0
Bit 0 RXFD1 0
Bit 7~6: Bit 5~0:
Reserved, Read 0. Reading these bits returns the current receiver FIFO depth, that is, the number of bytes left in the receiver FIFO.
8.5 Set3 - Version ID and Mapped Control Registers
Address Offset 0 1 2 3 4 5 6 7 Register Name AUID MP_UCR MP_UFR SSR Reversed Reserved Reserved Reserved Advanced IR ID Mapped IR Control Register Mapped IR FIFO Control Register Sets Select Register Register Description
8.5.1 Reg0 - Advanced IR ID (AUID) This register is read only. It stores advanced IR version ID. Reading it returns 1XH. Reg. SSR Default Value Bit 7 SSR7 0 Bit 6 SSR6 0 Bit 5 SSR5 0 Bit 4 SSR4 1 Bit 3 SSR3 X Bit 2 SSR2 X Bit 1 SRR1 X Bit 0 SRR0 X
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8.5.2 Reg1 - Mapped IR Control Register (MP_UCR) This register is read only. Reading this register returns IR Control Register value of Set 0. Reg. SSR
Default Value
Bit 7 SSR7 0
Bit 6 SSR6 0
Bit 5 SSR5 0
Bit 4 SSR4 0
Bit 3 SSR3 0
Bit 2 SSR2 0
Bit 1 SRR1 0
Bit 0 SRR0 0
8.5.3 Reg2 - Mapped IR FIFO Control Register (MP_UFR) This register is read only. Reading this register returns IR FIFO Control Register (UFR) value of SET 0. Reg. SSR
Default Value
Bit 7 SSR7 0
Bit 6 SSR6 0
Bit 5 SSR5 0
Bit 4 SSR4 0
Bit 3 SSR3 0
Bit 2 SSR2 0
Bit 1 SRR1 0
Bit 0 SRR0 0
8.5.4 Reg3 - Sets Select Register (SSR) Reading this register returns E4H. Writing a value selects a Register Set. Reg. SSR
Default Value
Bit 7 SSR7 1
Bit 6 SSR6 1
Bit 5 SSR5 1
Bit 4 SSR4 0
Bit 3 SSR3 0
Bit 2 SSR2 1
Bit 1 SRR1 0
Bit 0 SRR0 0
8.6 Set4 - TX/RX/Timer counter registers and IR control registers.
Address Offset 0 1 2 3 4 5 6 7 Register Name TMRL TMRH IR_MSL SSR TFRLL TFRLH RFRLL RFRLH Register Description Timer Value Low Byte Timer Value High Byte Infrared Mode Select Sets Select Register Transmitter Frame Length Low Byte Transmitter Frame Length High Byte Receiver Frame Length Low Byte Receiver Frame Length High Byte
8.6.1 Set4.Reg0, 1 - Timer Value Register (TMRL/TMRH) This is a 12-bit timer whose resolution is 1ms, that is, the maximum programmable time is 2 -1 ms. The timer is a down-counter and starts counting down when EN_TMR (Enable Timer) of Set4.Reg2 is set to 1. When the timer counts down to zero and EN_TMR=1, the TMR_I is set to 1 and a new initial value will be loaded into counter.
12
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8.6.2 Set4.Reg2 - Infrared Mode Select (IR_MSL) Mode Advanced IR
Reset Value
Bit 7 0
Bit 6 0
Bit 5 0
Bit 4 0
Bit 3 IR_MSL1 0
Bit 2 IR_MSL0 0
Bit 1 TMR_TST 0
Bit 0 EN_TMR 0
Bit 7~4: Reserved, write to 0. Bit 3, 2: IR_MSL1, 0 - Infrared Mode Select Select legacy IR, SIR, or ASK-IR mode. Note that in legacy SIR/ASK-IR user should set DIS_BACK=1 to avoid backward when programming baud rate. IR_MSL1, 0 00 01 10 11 Bit 1: TMR_TST - Timer Test When set to 1, reading the TMRL/TMRH returns the programmed values of TMRL/TMRH instead of the value of down counter. This bit is for testing timer register. Bit 0: EN_TMR - Enable Timer A write to 1 will enable the timer. 8.6.3 Set4.Reg3 - Set Select Register (SSR) Reading this register returns E8H. Writing this register selects Register Set. Reg. SSR
Default Value
Operation Mode Selected Legacy IR CIR Legacy ASK-IR Legacy SIR
Bit 7 SSR7 1
Bit 6 SSR6 1
Bit 5 SSR5 1
Bit 4 SSR4 1
Bit 3 SSR3 1
Bit 2 SSR2 0
Bit 1 SRR1 0
Bit 0 SRR0 0
8.6.4 Set4.Reg4, 5 - Transmitter Frame Length (TFRLL/TFRLH) Reg. TFRLL
Reset Value
Bit 7 bit 7 0 -
Bit 6 bit 6 0 -
Bit 5 bit 5 0 -
Bit 4 bit 4 0 bit 12 0
Bit 3 bit3 0 bit 11 0
Bit 2 bit 2 0 bit 10 0
Bit 1 bit 1 0 bit 9 0
Bit 0 bit 0 0 bit 8 0
TFRLH
Reset Value
These are combined to be a 13-bit register. Writing these registers programs the transmitter frame length of a package. These registers are only valid when APM=1 (automatic package mode, Set5.Reg4.bit5). When APM=1, the physical layer will split data stream to a programmed frame length if the transmitted data is
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larger than the programmed frame length. When these registers are read, they will return the number of bytes which is not transmitted from a frame length programmed. 8.6.5 Set4.Reg6, 7 - Receiver Frame Length (RFRLL/RFRLH) Reg. RFRLL
Reset Value
Bit 7 bit 7 0 -
Bit 6 bit 6 0 -
Bit 5 bit 5 0 -
Bit 4 bit 4 0 bit 12 0
Bit 3 bit 3 0 bit 11 0
Bit 2 bit 2 0 bit 10 0
Bit 1 bit 1 0 bit 9 0
Bit 0 bit 0 0 bit 8 0
RFRLH
Reset Value
These are combined to be a 13-bit register and up counter. The length of receiver frame will be limited to the programmed frame length. If the received frame length is larger than the programmed receiver frame length, the bit of MX_LEX (Maximum Length Exceed) will be set to 1. Simultaneously, the receiver will not receive any more data to RX FIFO until the next start flag of the next frame, which is defined in the physical layer IrDA 1.1. Reading these registers returns the number of received data bytes of a frame from the receiver.
8.7 Set 5 - Flow control and IR control and Frame Status FIFO registers
Address Offset 0 1 2 3 4 5 6 7 Register Name FCBLL FCBHL FC_MD SSR IRCFG1 FS_FO RFRLFL RFRLFH Register Description
Flow Control Baud Rate Divisor Latch Register (Low Byte) Flow Control Baud Rate Divisor Latch Register (High Byte) Flow Control Mode Operation Sets Select Register Infrared Configure Register Frame Status FIFO Register Receiver Frame Length FIFO Low Byte Receiver Frame Length FIFO High Byte
8.7.1 Set5.Reg0, 1 - Flow Control Baud Rate Divisor Latch Register (FCDLL/ FCDHL) If flow control is enforced when UART switches mode from MIR/FIR to SIR, then the pre-programmed baud rate of FCBLL/FCBHL are loaded into advanced baud rate divisor latch (ADBLL/ADBHL). 8.7.2 Set5.Reg2 - Flow Control Mode Operation (FC_MD) These registers control flow control mode operation as shown in the following table.
Reg. FC_MD Reset Value Bit 7~5 Bit 7 FC_MD2 0 Bit 6 FC_MD1 0 Bit 5 FC_MD0 0 Bit 4 0 Bit 3 FC_DSW 0 Bit 2 EN_FD 0 Bit 1 EN_BRFC 0 Bit 0 EN_FC 0
FC_MD2 - Flow Control Mode When flow control is enforced, these bits will be loaded into AD_MD2~0 of advanced HSR (Handshake Status Register). These three bits are defined as same as AD_MD2~0.
Bit 4:
Reserved, write 0.
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Bit 3: FC_DSW - Flow Control DMA Channel Swap A write to 1 allows user to swap DMA channel for transmitter or receiver when flow control is enforced. FC_DSW 0 1 Bit 2: Bit 1: EN_FD - Enable Flow DMA Control A write to 1 enables UART to use DMA channel when flow control is enforced. EN_BRFC - Enable Baud Rate Flow Control A write to 1 enables FC_BLL/FC_BHL (Flow Control Baud Rate Divider Latch, in Set5.Reg1~0) to be loaded into advanced baud rate divisor latch (ADBLL/ADBHL, in Set2.Reg1~0). Bit 0: EN_FC - Enable Flow Control A write to 1 enables flow control function and bit 7~1 of this register. Next Mode After Flow Control Occurred Receiver Channel Transmitter Channel
8.7.3 Set5.Reg3 - Sets Select Register (SSR) Writing this register selects Register Set. Reading this register returns ECH. Reg. SSR
Default Value
Bit 7 SSR7 1
Bit 6 SSR6 1
Bit 5 SSR5 1
Bit 4 SSR4 0
Bit 3 SSR3 1
Bit 2 SSR2 1
Bit 1 SRR1 0
Bit 0 SRR0 0
8.7.4 Set5.Reg4 - Infrared Configure Register 1 (IRCFG1) Reg. IRCFG1
Reset Value
Bit 7 0
Bit 6 FSF_TH 0
Bit 5 FEND_M 0
Bit 4 AUX_RX 0
Bit 3 0
Bit 2 0
Bit 1 IRHSSL 0
Bit 0 IR_FULL 0
Bit 7: Bit 6:
Reserved, write 0. FSF_TH - Frame Status FIFO Threshold Set this bit to determine the frame status FIFO threshold level and to generate the FSF_I. The threshold level values are defined as follows.
FSF_TH 0 1
Status FIFO Threshold Level 2 4
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Bit 5: FEND_MD - Frame End Mode A write to 1 enables hardware to split data stream into equal length frame automatically as defined in Set4.Reg4 and Set4.Reg5, i.e., TFRLL/TFRLH. Bit 4: Bit 3~2: Bit 1: AUX_RX - Auxiliary Receiver Pin A write to 1 selects IRRX input pin. (Refer to Set7.Reg7.Bit5) Reserved, write 0. IRHSSL - Infrared Handshake Status Select When set to 0, the HSR (Handshake Status Register) operates the same as defined in IR mode. A write to 1 will disable HSR, and reading HSR returns 30H. Bit 0: IR_FULL - Infrared Full Duplex Operation When set to 0, IR module operates in half duplex. A write to 1 makes IR module operate in full duplex. 8.7.5 Set5.Reg5 - Frame Status FIFO Register (FS_FO) This register shows the bottom byte of frame status FIFO. Reg. FS_FO
Reset Value
Bit 7 FSFDR 0
Bit 6 LST_FR 0
Bit 5 0
Bit 4
Bit 3
Bit 2
Bit 1 RX_OV 0
Bit 0 FSF_OV 0
MX_LEX PHY_ERR CRC_ERR 0 0 0
Bit 7: Bit 6: Bit 5: Bit 4:
Bit 3:
Bit 2:
Bit 1: Bit 0:
FSFDR - Frame Status FIFO Data Ready Indicates that a data byte is valid in frame status FIFO bottom. LST_FR - Lost Frame Set to 1 when one or more frames have been lost. Reserved. MX_LEX - Maximum Frame Length Exceed Set to 1 when incoming data exceeds programmed maximum frame length defined in Set4.Reg6 and Set4.Reg7. This bit is in frame status FIFO bottom and is valid only when FSFDR=1 (Frame Status FIFO Data Ready). PHY_ERR - Physical Error When receiving data, any physical layer error as defined in IrDA 1.1 will set this bit to 1. This bit is in frame status FIFO bottom and is valid only when FSFDR=1 (Frame Status FIFO Data Ready). CRC_ERR - CRC Error Set to 1 when a bad CRC is received in a frame. This CRC belongs to physical layer as defined in IrDA 1.1. This bit is in frame status FIFO bottom and is valid only when FSFDR=1 (Frame Status FIFO Data Ready). RX_OV - Received Data Overrun Set to 1 when receiver FIFO overruns. FSF_OV - Frame Status FIFO Overrun Set to 1 When frame status FIFO overruns.
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8.7.6 Set5.Reg6, 7 - Receiver Frame Length FIFO (RFLFL/RFLFH) or Lost Frame Number (LST_NU) Reg. RFLFL/ LST_NU
Reset Value
Bit 7 Bit 7 0 0
Bit 6 Bit 6 0 0
Bit 5 Bit 5 0 0
Bit 4 Bit 4 0 Bit 12 0
Bit 3 Bit 3 0 Bit 11 0
Bit 2 Bit 2 0 Bit 10 0
Bit 1 Bit 1 0 Bit 9 0
Bit 0 Bit 0 0 Bit 8 0
RFLFH
Reset Value
Receiver Frame Length FIFO (RFLFL/RFLFH): These are combined to be a 13-bit register. Reading these registers returns received byte count for the frame. When read, the register of RFLFH will pop-up another frame status and frame length if FSFDR=1 (Set5.Reg4.Bit7). Lost Frame Number (LST_NU):
When LST_FR=1 (Set5.Reg4.Bit6), Reg6 stands for LST_NU which is a 8-bit register holding the number of frames lost in succession n.
8.8 Set6 - IR Physical Layer Control Registers
Address Offset 0 1 2 3 4 5 6 7 Register Name IR_CFG2 MIR_PW SIR_PW SSR HIR_FNU IR_ID1 IR_ID2 HIR_SL Register Description Infrared Configure Register 2 MIR (1.152M bps or 0.576M bps) Pulse Width SIR Pulse Width Sets Select Register High Speed Infrared Flag Number IR ID Register 1 IR ID Register 2 High Speed infrared Select Register
8.8.1 Set6.Reg0 - Infrared Configure Register 2 (IR_CFG2) This register controls ASK-IR, MIR, FIR operations. Reg. IR_CFG2
Reset Value
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3 0
Bit 2
Bit 1
Bit 0 0
SHMD_N SHDM_N FIR_CRC MIR_CRC 0 0 1 0 SHMD_N - ASK-IR Modulation Disable SHMD_N
INV_CRC DIS_CRC 0 0
Bit 7:
Modulation Mode
Bit 6:
0 IRTX modulate 500K Hz Square Wave 1 Re-rout IRTX SHDM_N - ASK-IR Demodulation Disable SHDM_N Demodulation Mode 0 1 FIR_CRC - FIR (4M bps) CRC Type Demodulation 500K Hz Re-rout IRRX
Bit 5:
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FIR_CRC CRC Type
Bit 4:
Bit 2: Bit 1: Bit 0: 8.8.2
0 16-bit CRC 1 32-bit CRC Note that the 16/32-bit CRC are defined in IrDA 1.1 physical layer. MIR_CRC - MIR (1.152M/0.576M bps) CRC Type MIR_CRC CRC Type 0 16-bit CRC 1 32-bit CRC INV_CRC - Inverting CRC When set to 1, the CRC is inversely output in physical layer. DIS_CRC - Disable CRC When set to 1, the transmitter does not transmit CRC in physical layer. Reserved, write 1. Set6.Reg1 - MIR (1.152M/0.576M bps) Pulse Width Bit 7 0 Bit 6 0 Bit 5 0 Bit 4 M_PW4 0 Bit 3 M_PW3 1 Bit 2 M_PW2 0 Bit 1 M_PW1 1 Bit 0 M_PW0 0
Reg. MIR_PW
Reset Value
This 5-bit register sets MIR output pulse width.
M_PW4~0 00000 00001 00010
...
MIR Pulse Width (1.152M bps) 0 ns 20.83 ns 41.66 (==20.83*2) ns
...
MIR Output Width (0.576M bps) 0 ns 41.66 ns 83.32 (==41.66*2) ns
...
k 10
...
20.83*k 10 ns
...
41.66*k 10 ns
...
11111
645 ns
1290 ns
8.8.3 Set6.Reg2 - SIR Pulse Width Reg. SIR_PW
Reset Value
Bit 7 0
Bit 6 0
Bit 5 0
Bit 4 S_PW4 0
Bit 3 S_PW3 0
Bit 2 S_PW2 0
Bit 1 S_PW1 0
Bit 0 S_PW0 0
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This 5-bit register sets SIR output pulse width. S_PW4~0 00000 01101 Others SIR Output Pulse Width 3/16 bit time of IR 1.6 us 1.6 us
8.8.4 Set6.Reg3 - Set Select Register Select Register Set by writing a set number to this register. Reading this register returns F0H. Reg. SSR
Default Value
Bit 7 SSR7 1
Bit 6 SSR6 1
Bit 5 SSR5 1
Bit 4 SSR4 1
Bit 3 SSR3 0
Bit 2 SSR2 0
Bit 1 SRR1 0
Bit 0 SRR0 0
8.8.5 Set6.Reg4 - High Speed Infrared Beginning Flag Number (HIR_FNU) Reg. HIR_FNU
Reset Value
Bit 7 M_FG3 0
Bit 6 M_FG2 0
Bit 5 M_FG1 1
Bit 4 M_FG0 0
Bit 3 F_FL3 1
Bit 2 F_FL2 0
Bit 1 F_FL1 1
Bit 0 F_FL0 0
Bit 7~4:
M_FG3~0 - MIR beginning Flag Number These bits define the number of transmitter Start Flag of MIR. Note that the number of MIR start flag should be equal or more than two which is defined in IrDA 1.1 physical layer. The default value is 2.
M_FG3~0 0000 0001 0010 0011 0100 0101 0110 0111
Beginning Flag Number Reserved 1 2 (Default) 3 4 5 6 8
M_FG3~0 1000 1001 1010 1011 1100 1101 1110 1111
Beginning Flag Number 10 12 16 20 24 28 32 Reserved
Bit 3~0:
F_FG3~0 - FIR Beginning Flag Number These bits define the number of transmitter Preamble Flag in FIR. Note that the number of FIR start flag should be equal to sixteen which is defined in IrDA 1.1 physical layer. The default value is 16. Publication Release Date: Jul. 2002 Revision 1.0
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M_FG3~0 0000 0001 0010 0011 0100 0101 0110 0111
Beginning Flag Number Reserved 1 2 3 4 5 6 8
M_FG3~0 1000 1001 1010 1011 1100 1101 1110 1111
Beginning Flag Number 10 12 16 (Default) 20 24 28 32 Reserved
8.8.6 Set6.Reg5 - Winbond infrared ID Register 1 Bit 7~0: Winbond infrared ID1. Default value is 0x5C. Ready only.
8.8.7 Set6.Reg6 - Winbond infrared ID Register 2 Bit 7~0: Winbond infrared ID2. Default value is 0XA3. Ready only.
8.8.8 Set6.Reg7 - High Speed infrared ID Select Register
Bit 7 -4: Bit 3 -2: Reserve. IRSEL0_IRRXH Pin Function select Bit 3 -2 00 01 IRSEL0_IRRXH Pin function IRRXH FUNCTION IRSEL0 FUNCTION(Default value)
Bit 1 -0:
Reserve.
8.9 Set7 - Remote control and IR module selection registers
Address Offset 0 1 2 3 4 5 6 7 Register Name RIR_RXC RIR_TXC RIR_CFG SSR IRM_SL1 IRM_SL2 IRM_SL3 IRM_CR Register Description Remote Infrared Receiver Control Remote Infrared Transmitter Control Remote Infrared Config Register Sets Select Register Infrared Module (Front End) Select 1 Infrared Module Select 2 Infrared Module Select 3 Infrared Module Control Register
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8.9.1 Set7.Reg0 - Remote Infrared Receiver Control (RIR_RXC) Reg. RIR_RXC
Default Value
Bit 7 RX_FR2 0
Bit 6 RX_FR1 0
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
RX_FR0 RX_FSL4 RX_FSL3 RX_FSL2 RX_FSL1 RX_FSL0 1 0 1 0 0 1
This register defines frequency range of receiver of remote IR. Bit 7~5: RX_FR2~0 - Receiver Frequency Range 2~0. These bits select the input frequency range of the receiver. It is implemented through a band pass filter, i.e., only the input signals whose frequency lies in the range defined in this register will be received. Bit 4~0: RX_FSL4~0 - Receiver Frequency Select 4~0. Selects the operation frequency of receiver. Table: Low Frequency range select of receiver.
RX_FR2~0 (Low Frequency) 001 RX_FSL4~0 00010 00011 00100 00101 00110 00111 01000 01001 01011 01100 01101 01111 10000 10010 10011 10101 10111 11010 11011 11101 Min. Max. Min. 010 Max. Min. 011 Max.
26.1 28.2 29.4 30.0 31.4 32.1 32.8 33.6* 34.4 36.2 37.2 38.2 40.3 41.5 42.8 44.1 45.5 48.7 50.4 54.3
29.6 32.0 33.3 34.0 35.6 36.4 37.2 38.1* 39.0 41.0 42.1 43.2 45.7 47.1 48.5 50.0 51.6 55.2 57.1 61.5
24.7 26.7 27.8 28.4 29.6 30.3 31.0 31.7 32.5 34.2 35.1 36.0 38.1 39.2 40.4 41.7 43.0 46.0 47.6 51.3
31.7 34.3 35.7 36.5 38.1 39.0 39.8 40.8 41.8 44.0 45.1 46.3 49.0 50.4 51.9 53.6 55.3 59.1 61.2 65.9
23.4 25.3 26.3 26.9 28.1 28.7 29.4 30.1 30.8 32.4 33.2 34.1 36.1 37.2 38.3 39.5 40.7 43.6 45.1 48.6
34.2 36.9 38.4 39.3 41.0 42.0 42.9 44.0 45.0 47.3 48.6 49.9 52n.7 54.3 56.0 57.7 59.6 63.7 65.9 71.0
Note that those unassigned combinations are reserved.
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Table: High Frequency range select of receiver RX_FR2~0 (High Frequency) 001 RX_FSL4~0 00011 01000 01011 Min. 355.6 380.1 410.3 Max. 457.1 489.8 527.4
Note that those unassigned combinations are reserved.
Table: SHARP ASK-IR receiver frequency range select.
RX_FSL4~0 (SHARP ASK-IR) RX_FR2~0 001 010 564.7 011 436.4 600.0 100 417.4 640.0 101 400.0 685.6 110 384.0 738.5
480.0* 533.3* 457.1
Note that those unassigned combinations are reserved.
8.9.2 Set7.Reg1 - Remote Infrared Transmitter Control (RIR_TXC)
Reg. Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
RIR_TXC Default Value
TX_PW2 0
TX_PW1 1
TX_PW0 1
TX_FSL4 0
TX_FSL3 1
TX_FSL2 0
TX_FSL1 0
TX_FSL0 1
This Register defines the transmitter frequency and pulse width of remote IR. Bit 7~5: TX_PW2~0 - Transmitter Pulse Width 2~ 0. Select the transmission pulse width. TX_PW2~0 010 011 100 101 Low Frequency 6 s 7 s 9 s 10.6 s High Frequency 0.7 s 0.8 s 0.9 s 1.0 s
Note that those unassigned combinations are reserved.
Bit 4~0:
TX_FSL4~0 - Transmitter Frequency Select 4~0. Select the transmission frequency.
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Table: Low frequency selected. TX_FSL4~0 00011 00100 ... 11101 Low Frequency 30K Hz 31K HZ ... 56K Hz
Note that those unassigned combinations are reserved. Table: High frequency selected. TX_FSL4~0 00011 01000 01011 High Frequency 400K Hz 450K Hz 480K Hz
Note that those unassigned combinations are reserved.
8.9.3 Set7.Reg2 - Remote Infrared Config Register (RIR_CFG)
Reg. RIR_CFG Default Value Bit 7 P_PNB 0 Bit 6 SMP_M 0 Bit 5 RXCFS 0 Bit 4 0 Bit 3 TX_CFS 0 Bit 2 RX_DM 0 Bit 1 TX_MM1 0 Bit 0 TX_MM0 0
Bit 7:
P_PNB: Programming Pulse Number Coding. Write a 1 to select programming pulse number coding. The code format is defined as follows. (Number of bits) - 1 B7 B6 B5 B4 B3 B2 B1 B0
Bit value If the bit value is set to 0, the high pulse will be transmitted/received. If the bit value is set to 1, then no energy will be transmitted/received. Bit 6: SMP_M - Sampling Mode. To select receiver sampling mode. When set to 0 then uses T-period sampling, that the T-period is programmed IR baud rate. When set to 1, programmed baud rate will be used to do oversampling. Bit 5: RXCFS - Receiver Carry Frequency Select
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RXCFS 0 1 Bit 4: Bit 3: Reserved, write 0. TX_CFS - Transmitter Carry Frequency Select. Select low speed or high speed transmitter carry frequency. TX_FCS 0 1 Bit 2: RX_DM - Receiver Demodulation Mode. RX_DM 0 1 Bit 1~0: TX_MM1~0 00 01 10 11 8.9.4 Set7.Reg3 - Sets Select Register (SSR) Reg. SSR
Default Value
Selected Frequency 30K ~ 56K Hz 400K ~ 480K Hz
Selected Frequency 30K ~ 56K Hz 400K ~ 480K Hz Demodulation Mode Enable internal decoder Disable internal decoder TX Modulation Mode Continuously send pulse for logic 0 8 pulses for logic 0 and no pulse for logic 1. 6 pulses for logic 0 and no pulse for logic 1 Reserved.
TX_MM1~0 - Transmitter Modulation Mode 1~0
Bit 7 Bit 7 1
Bit 6 Bit 6 1
Bit 5 Bit 5 1
Bit 4 Bit 4 1
Bit 3 Bit 3 0
Bit 2 Bit 2 1
Bit 1 Bit 1 0
Bit 0 Bit 0 0
Reading this register returns F4H. Select Register Set by writing a set number to this register. 8.9.5 Set7.Reg4 - Infrared Module (Front End) Select 1 (IRM_SL1) Reg. IRM_SL1
Default Value
Bit 7 IR_MSP 0
Bit 6
Bit 5
Bit 4
Bit 3 0
Bit 2 AIR_SL2 0
Bit 1
Bit 0
SIR_SL2 SIR_SL1 SIR_SL0 0 0 0
AIR_SL1 AIR_SL0 0 0
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Bit 7:
IR_MSP - IR Mode Select Pulse When set to 1, the transmitter (IRTX) will send a 64 s pulse to setup a special IR front-end operational mode. When IR front-end module uses mode select pin (MD) and transmitter IR pulse (IRTX) to switch between high speed IR (such as FIR or MIR) and low speed IR (SIR or ASK-IR), this bit should be used.
Bit 6~4:
SIR_SL2~0 - SIR (Serial IR) mode select. These bits are used to program the operational mode of the SIR front -end module. These values of SIR_SL2~0 will be automatically loaded to pins of IR_SL2~0, respectively, when (1) AM_FMT=1 (Automatic Format, in Set7.Reg7.Bit7); (2) the mode of Advanced IR is set to SIR (AD_MD2~0, in Set0.Reg4.Bit7~0).
Bit 3: Bit 2~0:
Reserved, write 0. AIR_SL2~0 - ASK-IR Mode Select. These bits setup the operational mode of ASK-IR front-end module when AM_FMT=1 and AD_MD2~0 are configured to ASK-IR mode. These values will be automatically loaded to IR_SL2~0, respectively.
8.9.6 Set7.Reg5 - Infrared Module (Front End) Select 2 (IRM_SL2) Reg. IRM_SL2
Default Value
Bit 7 0
Bit 6 FIR_SL2 0
Bit 5 FIR_SL1 0
Bit 4 FIR_SL0 0
Bit 3 0
Bit 2
Bit 1
Bit 0
MIR_SL2 MIR_SL1 MIR_SL0 0 0 0
Bit 7: Bit 6~4:
Reserved, write 0. FIR_SL2~0 - FIR mode select. These bits setup the operational mode of FIR front-end module when AM_FMT=1 and AD_MD2~0 are configured to FIR mode. These values will be automatically loaded to IR_SL2~0, respectively.
Bit 3: Bit 2~0:
Reserved, write 0. MIR_SL2~0 - MIR Mode Select. These bits setup the MIR operational mode when AM_FMT=1 and AD_MD2~0 are configured to MIR mode. These values will be automatically loaded to IR_SL2~0, respectively.
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8.9.7 Set7.Reg6 - Infrared Module (Front End) Select 3 (IRM_SL3) Reg. IRM_SL3
Default Value
Bit 7 0
Bit 6
Bit 5
Bit 4
Bit 3 0
Bit 2
Bit 1
Bit 0
LRC_SL2 LRC_SL1 LRC_SL0 0 0 0
HRC_SL2 HRC_SL1 HRC_SL0 0 0 0
Bit 7: Bit 6~4:
Bit 3: Bit 2~0:
Reserved, write 0. LRC_SL2~0 - Low Speed Remote IR mode select. These bits setup the operational mode of low speed remote IR front-end module when AM_FMT=1 and AD_MD2~0 are configured to Remote IR mode. These values will be automatically loaded to IR_SL2~0, respectively. Reserved, write 0. HRC_SL2~0 - High Speed Remote IR Mode Select. These bits setup the operational mode of high speed remote IR front-end module when AM_FMT=1 and .AD_MD2~0 are configured to Remote IR mode. These values will be automatically loaded to IR_SL2~0, respectively.
8.9.8 Set7.Reg7 - Infrared Module Control Register (IRM_CR) Reg. IRM_CR
Default Value
Bit 7
Bit 6
Bit 5 IRSL0D 0
Bit 4 RXINV 0
Bit 3 TXINV 0
Bit 2 0
Bit 1 0
Bit 0 0
AM_FMT IRX_MSL 0 0
Bit 7:
Bit 6:
Bit 5:
AM_FMT - Automatic Format A write to 1 will enable automatic format IR front-end module. These bits will affect the output of IR_SL2~0 which is referred by IR front-end module selection (Set7.Reg4~6) IRX_MSL - IR Receiver Module Select Select the receiver input path from the IR front end module if IR module has a separated high speed and low speed receiver path. If the IR module has only one receiving path, then this bit should be set to 0. IRX_MSL Receiver Pin selected 0 IRRX (Low/High Speed) 1 IRRXH (High Speed) IRSL0D - Direction of IRSL0 Pin Select function for IRRXH or IRSL0 because they share common pin and have different input/output direction. IRSL0_D Function 0 1 IRRXH (I/P) IRSL0 (O/P)
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Table: IR receiver input pin selection
IRSL0D IRX_MSL AUX_RX High Speed IR Selected IR Pin IRRX IRRXH IRRX IRRXH IRRX
0 0 0 0 1 1 1 1
0 0 1 1 0 0 1 1
0 1 X X 0 1 X X
X X 0 1 X X 0 1
Reserved
IRRX
Reserved
Note: that (1) AUX_RX is defined in Set5.Reg4.Bit4, (2) high speed IR includes MIR (1.152M or 0.576M bps) and FIR (4M bps), (3) IRRX is the input of the low speed or high speed IR receiver, IRRXH is the input of the high speed IR receiver.
Bit 4: Bit 3: Bit 2~0:
RXINV - Receiving Signal Invert A write to 1 will Invert the receiving signal. TXINV - Transmitting Signal Invert A write to 1 will Invert the transmitting signal. Reserved, write 0.
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9 PARALLEL PORT
9.1 Printer Interface Logic
The parallel port of the W83L517D makes possible the attachment of various devices that accept eight bits of parallel data at standard TTL level. The W83L517D supports an IBM XT/AT compatible parallel port (SPP), bi-directional parallel port (BPP), Enhanced Parallel Port (EPP), Extended Capabilities Parallel Port (ECP), Extension FDD mode (EXTFDD), Extension 2FDD mode (EXT2FDD) on the parallel port. Refer to the configuration registers for more information on disabling, power-down, and on selecting the mode of operation. Table 6-1 shows the pin definitions for different modes of the parallel port.
TABLE 6- 1- 1 HOST CONNECTOR
PARALLEL PORT CONNECTOR AND PIN DEFINITIONS
PIN NUMBER OF W 8 3 L 5 1 7 D PIN ATTRIBUTE SPP EPP ECP
1 2-9 10 11 12 13 14 15 16 17 Notes: n : Active Low 1. Compatible Mode 2. High Speed Mode
36 31-26, 24-23 22 21 19 18 35 34 33 32
O I/O I I I I O I O O
nSTB PD<0:7> nACK BUSY PE SLCT nAFD nERR nINIT nSLIN
nWrite PD<0:7> Intr nWait PE Select nDStrb nError nInit nAStrb
nSTB, HostClk2 PD<0:7> nACK, PeriphClk2 BUSY, PeriphAck2 PEerror, nAckReverse2 SLCT, Xflag 2 nAFD, HostAck2 nFault1, nPeriphRequest2 nINIT 1, nReverseRqst2 nSLIN1 , ECPMode2
3. For more information, refer to the IEEE 1284 standard.
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TABLE 6- 1- 2
PARALLEL PORT CONNECTOR AND PIN DEFINITIONS
PIN NUMBER OF W83L517D PIN ATTRIBUTE SPP PIN ATTRIBUTE EXT2FDD PIN ATTRIBUTE EXTFDD
HOST CONNECTOR
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
36 31 30 29 28 27 26 24 23 22 21 19 18 35 34 33 32
O I/O I/O I/O I/O I/O I/O I/O I/O I I I I O I O O
nSTB PD0 PD1 PD2 PD3 PD4 PD5 PD6 PD7 nACK BUSY PE SLCT nAFD nERR nINIT nSLIN
--I I I I I --OD OD OD OD OD OD OD OD OD OD
--INDEX2# TRAK02# WP2# RDATA2# DSKCHG2# --MOA2# DSA2# DSB2# MOB2# WD2# WE2# RWC2# HEAD2# DIR2# STEP2#
--I I I I I ------OD OD OD OD OD OD OD OD
--INDEX2# TRAK02# WP2# RDATA2# DSKCHG2# ------DSB2# MOB2# WD2# WE2# RWC2# HEAD2# DIR2# STEP2#
9.2 Enhanced Parallel Port (EPP)
TABLE 6-2 PRINTER MODE AND EPP REGISTER ADDRESS A2 0 0 0 0 0 1 1 1 1 A1 0 0 1 1 1 0 0 1 1 A0 0 1 0 0 1 0 1 0 1 REGISTER Data port (R/W) Printer status buffer (Read) Printer control latch (Write) Printer control swapper (Read) EPP address port (R/W) EPP data port 0 (R/W) EPP data port 1 (R/W) EPP data port 2 (R/W) EPP data port 2 (R/W) NOTE 1 1 1 1 2 2 2 2 2
Notes: 1. These registers are available in all modes. 2. These registers are available only in EPP mode.
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9.2.1 Data Swapper The system microprocessor can read the contents of the printer's data latch by reading the data swapper. 9.2.2 Printer Status Buffer The system microprocessor can read the printer status by reading the address of the printer status buffer. The bit definitions are as follows:
7 6 5 4 3 2 1 1 1 TMOUT ERROR SLCT PE ACK BUSY 0
Bit 7: This signal is active during data entry, when the printer is off-line during printing, when the print head is changing position, or during an error state. When this signal is active, the printer is busy and cannot accept data. Bit 6: This bit represents the current state of the printer's ACK# signal. A 0 means the printer has received a character and is r ady to accept another. Normally, this signal will be active for approximately 5 e microseconds before BUSY# stops. Bit 5: Logical 1 means the printer has detected the end of paper. Bit 4: Logical 1 means the printer is selected. Bit 3: Logical 0 means the printer has encountered an error condition. Bit 1, 2: These two bits are not implemented and are logic one during a read of the status register. Bit 0: This bit is valid in EPP mode only. It indicates that a 10 S time-out has occurred on the EPP bus. A logic 0 means that no time-out error has occurred; a logic 1 means that a time-out error has been detected. Writing a logic 1 to this bit will clear the time-out status bit; writing a logic 0 has no effect. 9.2.3 Printer Control Latch and Printer Control Swapper The system microprocessor can read the contents of the printer control latch by reading the printer control swapper. Bit definitions are as follows:
7 1 6 1 STROBE AUTO FD INIT SLCT IN IRQ ENABLE DIR 5 4 3 2 1 0
Bit 7, 6: These two bits are a logic one during a read. They can be written.
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Bit 5: Direction control bit When this bit is a logic 1, the parallel port is in input mode (read); when it is a logic 0, the parallel port is in output mode (write). This bit can be read and written. In SPP mode, this bit is invalid and fixed at zero. Bit 4: A 1 in this position allows an interrupt to occur when ACK# changes from low to high. Bit 3: A 1 in this bit position selects the printer. Bit 2: A 0 starts the printer (50 microsecond pulse, minimum). Bit 1: A 1 causes the printer to line-feed after a line is printed. Bit 0: A 0.5 microsecond minimum high active pulse clocks data into the printer. Valid data must be present for a minimum of 0.5 microseconds before and after the strobe pulse.
9.2.4 EPP Address Port The address port is available only in EPP mode. Bit definitions are as follows:
7 6 5 4 3 2 1 0
PD0 PD1 PD2 PD3 PD4 PD5 PD6 PD7
The contents of DB0-DB7 are buffered (non-inverting) and output to ports PD0-PD7 during a write operation. The leading edge of IOW# causes an EPP address write cycle to be performed, and the trailing edge of IOW# latches the data for the duration of the EPP write cycle. PD0-PD7 ports are read during a read operation. The leading edge of IOR# causes an EPP address read cycle to be performed and the data to be output to the host CPU.
9.2.5 EPP Data Port 0-3 These four registers are available only in EPP mode. Bit definitions of each data port are as follows:
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7 6 5 4 3 2 1 0
PD0 PD1 PD2 PD3 PD4 PD5 PD6 PD7
When accesses are made to any EPP data port, the contents of DB0-DB7 are buffered (non-inverting) and output to the ports PD0-PD7 during a write operation. The leading edge of IOW# causes an EPP data write cycle to be performed, and the trailing edge of IOW# latches the data for the duration of the EPP write cycle. During a read operation, ports PD0-PD7 are read, and the leading edge of IOR# causes an EPP read cycle to be performed and the data to be output to the host CPU. 9.2.6 Bit Map of Parallel Port and EPP Registers
REGISTER
Data Port (R/W) Status Buffer (Read) Control Swapper (Read) Control Latch (Write) EPP Address Port R/W) EPP Data Port 0 (R/W) EPP Data Port 1 (R/W) EPP Data Port 2 (R/W) EPP Data Port 3 (R/W)
7 PD7 BUSY# 1 1 PD7 PD7 PD7 PD7 PD7
6 PD6 ACK# 1 1 PD6 PD6 PD6 PD6 PD6
5 PD 5 PE 1 DIR PD 5 PD 5 PD 5 PD 5 PD 5
4 PD4 SLCT IRQEN IRQ PD4 PD4 PD4 PD4 PD4
3 PD3
ERROF#
2 PD2 1 INIT# INIT# PD2 PD2 PD2 PD2 PD2
1 PD1 1 AUTOFD# AUTOFD# PD1 PD1 PD1 PD1 PD1
0 PD0 TMOUT STROBE# STROBE# PD0 PD0 PD0 PD0 PD0
SLIN SLIN PD3 PD3 PD3 PD3 PD3
9.2.7 EPP Pin Descriptions EPP NAME nWrite PD<0:7> Intr nWait PE Select nDStrb nError TYPE O I/O I I I I O I EPP DESCRIPTION Denotes an address or data read or write operation. Bi-directional EPP address and data bus. Used by peripheral device to interrupt the host. Inactive to acknowledge that data transfer is completed. Active to indicate that the device is ready for the next transfer. Paper end; same as SPP mode. Printer selected status; same as SPP mode. This signal is active low. It denotes a data read or write operation. Error; same as SPP mode. Publication Release Date: Jul. 2002 Revision 1.0
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NInits nAStrb O O This signal is active low. When it is active, the EPP device is reset to its initial operating mode. This signal is active low. It denotes an address read or write operation.
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9.2.8 EPP Operation When the EPP mode is selected in the configuration register, the standard and bi-directional modes are also available. The PDx bus is in the standard or bi-directional mode when no EPP read, write, or address cycle is currently being executed. In this condition all output signals are set by the SPP Control Port and the direction is controlled by DIR of the Control Port. A watchdog timer is required to prevent system lockup. The timer indicates that more than 10 S have elapsed from the start of the EPP cycle to the time WAIT# is deasserted. The current EPP cycle is aborted when a time-out occurs. The time-out condition is indicated in Status bit 0.
9.2.8.1 EPP Operation
The EPP operates on a two-phase cycle. First, the host selects the register within the device for subsequent operations. Second, the host performs a series of read and/or write byte operations to the selected register. Four operations are supported on the EPP: Address Write, Data Write, Address Read, and Data Read. All operations on the EPP device are performed asynchronously.
9.2.8.2 EPP Version 1.9 Operation
The EPP read/write operation can be completed under the following conditions: a. If the nWait is active low, when the read cycle (nWrite inactive high, nDStrb/nAStrb active low) or write cycle (nWrite active low, nDStrb/nAStrb active low) starts, the read/write cycle proceeds normally and will be completed when nWait goes inactive high. b. If nWait is inactive high, the read/write cycle will not start. It must wait until nWait changes to active low, at which time it will start as described above.
9.2.8.3 EPP Version 1.7 Operation
The EPP read/write cycle can start without checking whether nWait is active or inactive. Once the read/write cycle starts, however, it will not terminate until nWait changes from active low to inactive high.
9.3 Extended Capabilities Parallel (ECP) Port This port is software and hardware compatible with existing parallel ports, so it may be used as a standard
printer mode if ECP is not required. It provides an automatic high burst-bandwidth channel that supports DMA for ECP in both the forward (host to peripheral) and reverse (peripheral to host) directions. Small FIFOs are used in both forward and reverse directions to improve the maximum bandwidth requirement. The size of the FIFO is 16 bytes. The ECP port supports an automatic handshake for the standard parallel port to improve compatibility mode transfer speed. The ECP port supports run-length-encoded (RLE) decompression (required) in hardware. Compression is accomplished by counting identical bytes and transmitting an RLE byte that indicates how many times the next byte is to be repeated. Hardware support for compression is optional. For more information about the ECP Protocol, refer to the Extended Capabilities Port Protocol and ISA Interface Standard. 9.3.1 ECP Register and Mode Definitions NAME data ecpAFifo dsr ADDRESS Base+000h Base+000h Base+001h I/O R/W R/W R ECP MODES 000-001 011 All FUNCTION Data Register ECP FIFO (Address) Status Register Publication Release Date: Jul. 2002 Revision 1.0
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dcr cFifo ecpDFifo tFifo cnfgA cnfgB ecr Base+002h Base+400h Base+400h Base+400h Base+400h Base+401h Base+402h R/W R/W R/W R/W R R/W R/W All 010 011 110 111 111 All Control Register Parallel Port Data FIFO ECP FIFO (DATA) Test FIFO Configuration Register A Configuration Register B Extended Control Register
Note: The base addresses are specified by CR23, which are determined by configuration register or hardware setting.
MODE 000 001 010 011 100 101 110 111 SPP mode PS/2 Parallel Port mode Parallel Port Data FIFO mode ECP Parallel Port mode
DESCRIPTION
EPP mode (If this option is enabled in the CR9 and CR0 to select ECP/EPP mode) Reserved Test mode Configuration mode
Note: The mode selection bits are bit 7-5 of the Extended Control Register.
9.3.2 Data and ecpAFifo Port Modes 000 (SPP) and 001 (PS/2) (Data Port) During a write operation, the Data Register latches the contents of the data bus on the rising edge of the input. The contents of this register are output to the PD0-PD7 ports. During a read operation, ports PD0-PD7 are read and output to the host. The bit definitions are as follows:
7 6 5 4 3 2 1 0
PD0 PD1 PD2 PD3 PD4 PD5 PD6 PD7
Mode 011 (ECP FIFO-Address/RLE) A data byte written to this address is placed in the FIFO and tagged as an ECP Address/RLE. The hardware at the ECP port transmits this byte to the peripheral automatically. The operation of this register is defined only for the forward direction. The bit definitions are as follows: Publication Release Date: Jul. 2002 Revision 1.0
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7
6
5
4
3
2
1
0
Address or RLE
Address/RLE
9.3.3 Device Status Register (DSR) These bits are at low level during a read of the Printer Status Register. The bits of this status register are defined as follows:
7 6 5 4 3 2 1 1 1 0 1
nFault Select PError nAck nBusy
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Bit 7: This bit reflects the complement of the Busy input. Bit 6: This bit reflects the nAck input. Bit 5: This bit reflects the PError input. Bit 4: This bit reflects the Select input. Bit 3: This bit reflects the nFault input. Bit 2-0: These three bits are not implemented and are always logic one during a read.
9.3.4 Device Control Register (DCR) The bit definitions are as follows:
7 1 6 1 strobe autofd nInit SelectIn ackIntEn Direction 5 4 3 2 1 0
Bit 6, 7: These two bits are logic one during a read and cannot be written. Bit 5: This bit has no effect and the direction is always out if mode = 000 or mode = 010. Direction is valid in all other modes. 0 the parallel port is in output mode. 1 the parallel port is in input mode. Bit 4: Interrupt request enable. When this bit is set to a high level, it may be used to enable interrupt requests from the parallel port to the CPU due to a low to high transition on the ACK# input. Bit 3: This bit is inverted and output to the SLIN# output. 0 The printer is not selected. 1 The printer is selected. Bit 2: This bit is output to the INIT# output. Bit 1: This bit is inverted and output to the AFD# output. Bit 0: This bit is inverted and output to the STB# output.
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9.3.5 cFifo (Parallel Port Data FIFO) Mode = 010 This mode is defined only for the forward direction. The standard parallel port protocol is used by a hardware handshake to the peripheral to transmit bytes written or DMAed from the system to this FIFO. Transfers to the FIFO are byte aligned. 9.3.6 ecpDFifo (ECP Data FIFO) Mode = 011 When the direction bit is 0, bytes written or DMAed from the system to this FIFO are transmitted by a hardware handshake to the peripheral using the ECP parallel port protocol. Transfers to the FIFO are byte aligned. When the direction bit is 1, data bytes from the peripheral are read under automatic hardware handshake from ECP into this FIFO. Reads or DMAs from the FIFO will return bytes of ECP data to the system. 9.3.7 tFifo (Test FIFO Mode) Mode = 110 Data bytes may be read, written, or DMAed to or from the system to this FIFO in any direction. Data in the tFIFO will not be transmitted to the parallel port lines. However, data in the tFIFO may be displayed on the parallel port data lines. 9.3.8 cnfgA (Configuration Register A) Mode = 111 This register is a read-only register. When it is read, 10H is returned. This indicates to the system that this is an 8-bit implementation. 9.3.9 cnfgB (Configuration Register B) Mode = 111
The bit definitions are as follows: 7 6 5 4 3 1 2 1 1 1 0
IRQx 0 IRQx 1 IRQx 2 intrValue compress Bit 7: This bit is read-only. It is at low level during a read. This means that this chip does not support hardware RLE compression. Bit 6: Returns the value on the ISA IRQ line to determine possible conflicts.
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Bit 5-3: Reflect the IRQ resource assigned for ECP port. cnfgB[5:3] IRQ resource 000 reflect other IRQ resources selected by PnP register (default) 001 IRQ7 010 IRQ9 011 IRQ10 100 IRQ11 101 IRQ14 110 IRQ15 111 IRQ5 Bit 2-0: These five bits are at high level during a read and can be written. 9.3.10 ecr (Extended Control Register) Mode = all This register controls the extended ECP parallel port functions. The bit definitions are follows:
7 6 5 4 3 2 1 0
empty full service Intr dmaEn nErrIntrEn MODE MODE MODE
Bit 7-5: These bits are read/write and select the mode. 000 001 Standard Parallel Port mode. The FIFO is reset in this mode. PS/2 Parallel Port mode. This is the same as 000 except that direction may be used to tri-state the data lines and reading the data register returns the value on the data lines and not the value in the data register. Parallel Port FIFO mode. This is the same as 000 except that bytes are written or DMAed to the FIFO. FIFO data are automatically transmitted using the standard parallel port protocol. This mode is useful only when direction is 0. ECP Parallel Port Mode. When the direction is 0 (forward direction), bytes placed into the ecpDFifo and bytes written to the ecpAFifo are placed in a single FIFO and auto transmitted to the peripheral using ECP Protocol. When the direction is 1 (reverse direction), bytes are moved from the ECP parallel port and packed into bytes in the ecpDFifo. Selects EPP Mode. In this mode, EPP is activated if the EPP mode is selected. Reserved. Test Mode. The FIFO may be written and read in this mode, but the data will not be transmitted on the parallel port. Configuration Mode. The confgA and confgB registers are accessible at 0x400 and 0x401 in this mode.
010
011
100 101 110 111
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Bit 4: Read/Write (Valid only in ECP Mode) 1 Disables the interrupt generated on the asserting edge of nFault. 0 Enables an interrupt pulse on the high to low edge of nFault. If nFault is asserted (interrupt) an interrupt will be generated and this bit is written from a 1 to 0. Bit 3: Read/Write 1 Enables DMA. 0 Disables DMA unconditionally. Bit 2: Read/Write 1 Disables DMA and all of the service interrupts. 0 Enables one of the following cases of interrupts. When one of the service interrupts has occurred, the serviceIntr bit is set to a 1 by hardware. This bit must be reset to 0 to re-enable the interrupts. Writing a 1 to this bit will not cause an interrupt. (a) dmaEn = 1: During DMA this bit is set to a 1 when terminal count is reached. (b) dmaEn = 0 direction = 0: This bit is set to 1 whenever there are writeIntr Threshold or more bytes free in the FIFO. (c) dmaEn = 0 direction = 1: This bit is set to 1 whenever there are readIntr Threshold or more valid bytes to be read from the FIFO. Bit 1: Read only 0 The FIFO has at least 1 free byte. 1 The FIFO cannot accept another byte or the FIFO is completely full. Bit 0: Read only 0 The FIFO contains at least 1 byte of data. 1 The FIFO is completely empty. 9.3.11 Bit Map of ECP Port Registers D7 Data ecpAFifo Dsr Dcr CFifo ecpDFifo TFifo CnfgA CnfgB Ecr
Notes: 1. These registers are available in all modes. 2. All FIFOs use one common 16-byte FIFO. PD7 Addr/RLE nBusy 1 ECP Data FIFO Test FIFO 0 compress 0 intrValue MODE 0 1 1 1 nErrIntrEn 0 1 dmaEn 0 1 serviceIntr 0 1 full 0 1 empty
D6
PD6 nAck 1
D5
PD5 PError Directio
D4
PD4 Select ackIntEn
D3
PD3 nFault SelectIn
D2
PD2 1 nInit
D1
PD1 1 autofd
D0
PD0
NOTE
2
Address or RLE field 1 strobe
1 1 2 2 2
Parallel Port Data FIFO
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9.3.12 ECP Pin Descriptions NAME nStrobe (HostClk) TYPE O DESCRIPTION The nStrobe registers data or address into the slave on the asserting edge during write operations. This signal handshakes with Busy. These signals contains address or data or RLE data. This signal indicates valid data driven by the peripheral when asserted. This signal handshakes with nAutoFd in reverse. This signal deasserts to indicate that the peripheral can accept data. It indicates whether the data lines contain ECP command information or data in the reverse direction. When in reverse direction, normal data are transferred when Busy (PeriphAck) is high and an 8-bit command is transferred when it is low. This signal is used to acknowledge a change in the d irection of the transfer (asserted = forward). The peripheral drives this signal low to acknowledge nReverseRequest. The host relies upon nAckReverse to determine when it is permitted to drive the data bus. Indicates printer on line. Requests a byte of data from the peripheral when it is asserted. This signal indicates whether the data lines contain ECP address or data in the forward direction. When in forward direction, normal data are transferred when nAutoFd (HostAck) is high and an 8-bit command is transferred when it is low. Generates an error interrupt when it is asserted. This signal is valid only in the forward direction. The peripheral is permitted (but not required) to drive this pin low to request a reverse transfer during ECP Mode. This signal sets the transfer direction (asserted = reverse, deasserted = forward). This pin is driven low to place the channel in the reverse direction. This signal is always deasserted in ECP mode.
PD<7:0> nAck (PeriphClk) Busy (PeriphAck)
I/O I I
PError (nAckReverse)
I
Select (Xflag) nAutoFd (HostAck)
I O
nFault (nPeriphRequest)
I
nInit (nReverseRequest)
O
nSelectIn (ECPMode)
O
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9.3.13 ECP Operation The host must negotiate on the parallel port to determine if the peripheral supports the ECP protocol before ECP operation. After negotiation, it is necessary to initialize some of the port bits. The following are required: (a) Set direction = 0, enabling the drivers. (b) Set strobe = 0, causing the nStrobe signal to default to the deasserted state. (c) Set autoFd = 0, causing the nAutoFd signal to default to the deasserted state. (d) Set mode = 011 (ECP Mode) ECP address/RLE bytes or data bytes may be sent automatically by writing the ecpAFifo or ecpDFifo, respectively.
9.3.13.1 Mode Switching
Software will execute P1284 negotiation and all operation prior to a data transfer phase under programmed I/O control (mode 000 or 001). Hardware provides an automatic control line handshake, moving data between the FIFO and the ECP port only in the data transfer phase (mode 011 or 010). If the port is in mode 000 or 001 it may switch to any other mode. If the port is not in mode 000 or 001 it can only be switched into mode 000 or 001. The direction can be changed only in mode 001. When in extended forward mode, the software should wait for the FIFO to be empty before switching back to mode 000 or 001. In ECP reverse mode the software waits for all the data to be read from the FIFO before changing back to mode 000 or 001.
9.3.13.2 Command/Data
ECP mode allows the transfer of normal 8-bit data or 8-bit commands. In the forward direction, normal data are transferred when HostAck is high and an 8-bit command is transferred when HostAck is low. The most significant bits of the command indicate whether it is a run-length count (for compression) or a channel address. In the reverse direction, normal data are transferred when PeriphAck is high and an 8 command is -bit transferred when PeriphAck is low. The most significant bit of the command is always zero.
9.3.13.3 Data Compression
The W83L517D supports run length encoded (RLE) decompression in hardware and can transfer compressed data to a peripheral. Note that the odd (RLE) compression in hardware is not supported. In order to transfer data in ECP mode, the compression count is written to the ecpAFifo and the data byte is written to the ecpDFifo. 9.3.14 FIFO Operation The FIFO threshold is set in configuration register 5. All data transfers to or from the parallel port can proceed in DMA or Programmed I/O (non-DMA) mode, as indicated by the selected mode. The FIFO is used by selecting the Parallel Port FIFO mode or ECP Parallel Port Mode. After a reset, the FIFO is disabled.
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9.3.15 DMA Transfers DMA transfers are always to or from the ecpDFifo, tFifo, or CFifo. The DMA uses the standard PC DMA services. The ECP requests DMA transfers from the host by activating the PDRQ pin. The DMA will empty or fill the FIFO using the appropriate direction and mode. When the terminal count in the DMA controller is reached, an interrupt is generated and serviceIntr is asserted, which will disable the DMA. 9.3.16 Programmed I/O (NON-DMA) Mode The ECP or parallel port FIFOs can also be operated using interrupt driven programmed I/O. Programmed I/O transfers are to the ecpDFifo at 400H and ecpAFifo at 000H or from the ecpDFifo located at 400H, or to/from the tFifo at 400H. The host must set the direction, state, dmaEn = 0 and serviceIntr = 0 in the programmed I/O transfers. The ECP requests programmed I/O transfers from the host by activating the IRQ pin. The programmed I/O will empty or fill the FIFO using the appropriate direction and mode.
9.4 Extension FDD Mode (EXTFDD)
In this mode, the W83L517D changes the printer interface pins to FDC input/output pins, allowing the user to install a second floppy disk drive (FDD B) through the DB -25 printer connector. The pin assignments for the FDC input/output pins are shown in Table 6-1. After the printer interface is set to EXTFDD mode, the following occur: (1) Pins MOB# and DSB# will be forced to inactive state. (2) Pins DSKCHG# , RDATA#, WP#, TRAK0#, INDEX# will be logically ORed with pins PD4-PD0 to serve as input signals to the FDC. (3) Pins PD4-PD0 each will have an internal resistor of about 1K ohm to serve as pull-up resistor for FDD open drain/collector output. (4) If the parallel port is set to EXTFDD mode after the system has booted DOS or another operating system, a warm reset is needed to enable the system to recognize the extension floppy drive.
9.5 Extension 2FDD Mode (EXT2FDD)
In this mode, the W83L517D changes the printer interface pins to FDC input/output pins, allowing the user to install two external floppy disk drives through the DB -25 printer connector to replace internal floppy disk drives A and B. The pin assignments for the FDC input/output pins are shown in Table6-1. After the printer interface is set to EXTFDD mode, the following occur: (1) Pins MOA#, DSA#, MOB#, and DSB# will be forced to inactive state. (2) Pins DSKCHG# , RDATA#, WP# , TRAK0#, and INDEX# will be logically ORed with pins PD4-PD0 to serve as input signals to the FDC. (3) Pins PD4-PD0 each will have an internal resistor of about 1K ohm to serve as pull-up resistor for FDD open drain/collector output. (4) If the parallel port is set to EXT2FDD mode after the system has booted DOS or another operating system, a warm reset is needed to enable the system to recognize the extension floppy drive.
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10 GENERAL PURPOSE I/ O
W83L517D provides 38 input/output ports that can be individually configured to perform a simple basic I/O function or a pre-defined alternate function. Those 38 GP I/O ports are divided into five groups, each group contains 6,8,8,8,8 ports from group 1 to group 5. The first group is configured through control registers in logical device 7, the second group in logical device 8,the third ,the fourth,and the fifth group in logical device 9. Users can configure each individual port to be an input or output port by programming respective bit in selection register (CRF0: 0 = output, 1 = input). Invert port value by setting inversion register (CRF2: 0 = non-inverse, 1 = inverse). Port value is read/written through data register (CRF1). Table 7.1 and 7.2 gives more details on GPIO's assignment. In addition, GPIO1 is designed to be functional even in power loss condition (VCC or VSB is off). Figure 7.1 shows the GP I/O port's structure. Right after Power-on reset, those ports default to perform basic input function except ports in GPIO1 which maintains its previous settings until a battery loss condition. Table 7.1 SELECTION BIT 0 = OUTPUT 1 = INPUT 0 0 1 1 Table 7.2 GP I/O PORT DATA REGISTER REGISTER BIT ASSIGNMENT BIT 0 BIT 1 BIT 2 GP1 BIT 3 BIT 4 BIT 5 BIT 0 BIT 1 BIT 2 BIT 3 GP2 BIT 4 BIT 5 BIT 6 BIT 7 GP I/O PORT DATA REGISTER REGISTER BIT ASSIGNMENT GP I/O PORT GP10 GP11 GP12 GP13 GP14 GP15 GP20 GP21 GP22 GP23 GP24 GP25 GP26 GP27 GP I/O PORT INVERSION BIT 0 = NON INVERSE 1 = INVERSE 0 1 0 1 BASIC I/O OPERATIONS
Basic non-inverting output Basic inverting output Basic non-inverting input Basic inverting input
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BIT 0 BIT 1 BIT 2 BIT 3 GP3 BIT 4 BIT 5 BIT 6 BIT 7 BIT 0 BIT 1 BIT 2 BIT 3 GP4 BIT 4 BIT 5 BIT 6 BIT 7 BIT 0 BIT 1 BIT 2 BIT 3 GP5 BIT 4 BIT 5 BIT 6 BIT 7 GP30 GP31 GP32 GP33 GP34 GP35 GP36 GP37 GP40 GP41 GP42 GP43 GP44 GP45 GP46 GP47 GP50 GP51 GP52 GP53 GP54 GP55 GP56 GP57
Figure 7.1
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11 ACPI REGISTERS FEATURES
W83L517D supports both ACPI and legacy power managements. The switch logic of the power management block generates an SMI interrupt in the legacy mode and an PME interrupt in the ACPI mode. The new ACPI feature routes SMI / PME logic output either to SMI or toPME .The SMI /PME logic routes toSMI only when both PME_EN = 0 and SMIPME_OE = 1. Similarly, the SMI / PME logic routes to PME only when both PME_EN = 1 and SMIPME_OE = 1.
PME_EN IRQ events
SMIPME_OE 0
SMI / PME Logic
SMI
1 SMIPME_OE
PME
Device Idle Timers Device Trap Global STBY Timer
IRQs
Sleep/Wake State machine
WAK_STS Clock Control
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12 CONFIGURATION REGISTER
12.1 Plug and Play Configuration
The W83L517D uses Compatible PNP protocol to access configuration registers for setting up different types of configurations. In W83L517D, there are eleven Logical Devices (from Logical Device 0 to Logical Device B with the exception of logical device 4 for backward compatibility) which correspond to eleven individual functions: FDC (logical device 0), PRT (logical device 1), UART1 (logical device 2), FIR (Fast IR, logical device 6), GPIO1 (logical device 7), GPIO2(logical device 8),GPIO3 ~GPIO5(logical device 9), and ACPI ((logical device A). Each Logical Device has its own configuration registers (above CR30). Host can access those registers by writing an appropriate logical device number into logical device select register at CR07.
12.2 Compatible PnP
12.2.1 Extended Function Registers In Compatible PnP, there are two ways to enter Extended Function and read or write the configuration registers. HEFRAS (CR26 bit 6) can be used to select one out of these two methods of entering the Extended Function mode as follows: HEFRAS 0 1 address and value write 87h to the location 2Eh twice write 87h to the location 4Eh twice
After Power-on reset, the value on RTSA# (pin 49) is latched by HEFRAS of CR26. In Compatible PnP, a specific value (87h) must be written twice to the Extended Functions Enable Register (I/O port address 2Eh or 4Eh). Secondly, an index value (02h, 07h-FFh) must be written to the Extended Functions Index Register (I/O port address 2Eh or 4Eh same as Extended Functions Enable Register) to identify which configuration register is to be accessed. The designer can then access the desired configuration register through the Extended Functions Data Register (I/O port address 2Fh or 4Fh). After programming of the configuration register is finished, an additional value (AAh) should be written to EFERs to exit the Extended Function mode to prevent unintentional access to those configuration registers. Publication Release Date: Jul. 2002 Revision 1.0
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The designer can also set bit 5 of CR26 (LOCKREG) to high to protect the configuration registers against accidental accesses. The configuration registers can be reset to their default or hardware settings only by a cold reset (pin MR = 1). A warm reset will not affect the configuration registers. 12.2.2 Extended Functions Enable Registers (EFERs) After a power-on reset, the W83L517D enters the default operating mode. Before the W83L517D enters the extended function mode, a specific value must be programmed into the Extended Function Enable Register (EFER) so that the extended function register can be accessed. The Extended Function Enable Registers are write-only registers. On a PC/AT system, their port addresses are 2Eh or 4Eh (as described in previous section). 12.2.3 Extended Function Index Registers (EFIRs), Extended Function Data Registers(EFDRs) After the extended function mode is entered, the Extended Function Index Register (EFIR) must be loaded with an index value (02h, 07h-FEh) to access Configuration Register 0 (CR0), Configuration Register 7 (CR07) to Configuration Register FE (CRFE), and so forth through the Extended Function Data Register (EFDR). The EFIRs are write-only registers with port address 2Eh or 4Eh (as described in section 12.2.1) on PC/AT systems; the EFDRs are read/write registers with port address 2Fh or 4Fh (as described in section 9.2.1) on PC/AT systems.
12.3 Configuration Sequence
To program W83L517D configuration registers, the following configuration sequence must be followed: (1). Enter the extended function mode (2). Configure the configuration registers (3). Exit the extended function mode 12.3.1 Terminology I/F : Interface. Default : The default value of the register after power-on. `XXXXb' : Indicates the value in binary notation. `XXXXh' : Indicates the value in hexadecimal notation. `XsXXb' : The `s' indicates the bit v alue is setting by power-on strapping.
12.3.2 Enter the extended function mode To place the chip into the extended function mode, two successive wrtites of 0x87 must be applied to Extended Function Enable Registers (EFERs, i.e. 2Eh or 4Eh).
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12.3.3 Configurate the configuration registers The chip selects the logical device and activates the desired logical devices through Extended Function Index Register(EFIR) and Extended Function Data Register(EFDR). EFIR is located at the same address as EFER, and EFDR is located at address (EFIR+1). First, write the Logical Device Number (i.e.,0x07h) to the EFIR and then write the number of the desired logical device to the EFDR. If accessing the Chip(Global) Control Registers, this step is not required. Secondly, write the address of the desired configuration register within the logical device to the EFIR and then write (or read) the desired configuration register through EFDR. 12.3.4 Exit the extended function mode To exit the extended function mode, one write of 0xAAh to EFER is required. Once the chip exits the extended function mode, it is in the normal running mode and is ready to enter the configuration mode. 12.3.5 Software programming example The following example is written in Intel 8086 assembly language. It assumes that the EFER is located at 2Eh, so EFIR is located at 2Eh and EFDR is located at 2Fh. If HEFRAS (CR26 bit 6) is set, 4Eh can be directly replaced by 4Eh and 2Fh replaced by 4Fh. ;----------------------------------------------------------------------------------; Enter the extended function mode ,interruptible double-write | ;----------------------------------------------------------------------------------MOV DX,2EH MOV AL,87H OUT DX,AL OUT DX,AL ;----------------------------------------------------------------------------; Configurate logical device 1, configuration register CRF0 | ;----------------------------------------------------------------------------MOV DX,2EH MOV AL,07H OUT DX,AL ; point to Logical Device Number Reg. MOV DX,2FH MOV AL,01H OUT DX,AL ; select logical device 1 ; MOV DX,2EH MOV AL,F0H OUT DX,AL ; select CRF0 MOV DX,2FH MOV AL,3CH OUT DX,AL ; update CRF0 with value 3CH ;-----------------------------------------; Exit extended function mode | ;-----------------------------------------MOV DX,2EH MOV AL,AAH OUT DX,AL
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12.4 Chip (Global) Control Register
CR02 (Default 0x00h) Bit 7 - 1: Reserved. Bit 0: SWRST --> Soft Reset. CR07 The register is used to switch each logical device when write the number of logical device to EFDRs. Bit 7 - 0: LDNB7 - LDNB0 --> Logical Device Number Bit 7 - 0 CR20 (Default 0x61h) Bit 7 - 0: DEVIDB7 - DEBIDB0 --> Device ID Bit 7 - Bit 0 = 0x 61 (read only). CR21 (Default 0x0X) Bit 7 - 0: DEVREVB7 - DEBREVB0 --> Device Rev = 0x 0X (read only). X : Version change number .(Bit 3~0). CR22 (Default 0xFFh) Bit 7~ 5: Reserved. Bit 4: Flash I/F Power down =0 =1 Power down No Power down
Bit 3: FIRPWD = 0 Power down = 1 No Power down Bit 2: URAPWD = 0 Power down = 1 No Power down Bit 1: PRTPWD = 0 Power down = 1 No Power down Bit 0: FDCPWD = 0 Power down = 1 No Power down
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CR23 (Default 0x00h) Bit 7: GPIO 5X Output Mode Selection. = 0 When on inactive situation, each signal of GPIO 5X will be open-drain. = 1 When on inactive situation, each signal of GPIO 5X will be 5V CMOS structure. Bit 6: GPIO 4X Output Mode Selection. = 0 When on inactive situation, each signal of GPIO 4X will be open-drain. = 1 When on inactive situation, each signal of GPIO 4X will be 5V CMOS structure. Bit 5: GPIO 3X Output Mode Selection. = 0 When on inactive situation, each signal of GPIO 3X will be open-drain. = 1 When on inactive situation, each signal of GPIO 3X will be 5V CMOS structure. Bit 4: GPIO 2X Output Mode Selection. = 0 When on inactive situation, each signal of GPIO 2X will be open-drain. = 1 When on inactive situation, each signal of GPIO 2X will be 5V CMOS structure. Bit 3: GPIO 1X Output Mode Selection. = 0 When on inactive situation, each signal of GPIO 1X will be open-drain. = 1 When on inactive situation, each signal of GPIO 1X will be 5V CMOS structure. Bit 2: Flash ROM I/F Address Segment ( 000F0000h - 000FFFFFh) Enable. = 0 Enable (Default). = 1 Disable. Bit 1: Flash ROM I/F Address Segment ( 000E0000h - 000EFFFFh) Enable. = 0 Enable (Default). = 1 Disable. Bit 0: IPD (Immediate Power Down). When set to 1, it will put the whole chip into power down mode immediately. CR24 (Default ss00,00ssb) Bit 7 : Keyboard address decoder control = 0 Enable keyboard address (interface: KBCS# and MCCS#) decoder and IRQ1 , IRQ12 pass to SERIRQ. = 1 Disable keyboard interface. The corresponding power-on setting pin is PENKBC# (pin 52)
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Bit 6: CLKSEL(Enable 48Mhz) = 0 The clock input on Pin 1 should be 24 MHz. = 1 The clock input on Pin 1 should be 48 MHz. The corresponding power-on setting pin is PEN48 (pin 61). Bit[5:4]: ROM size select = 00 1Mb 01 2Mb 10 4Mb 11 Reserved Bit3:MEMW# Select (PIN97) = 0 MEMW# of flash interface is Disabled. = 1 MEMW# of flash interface is Enabled. Bit2: Reserved. Bit1 : Enable Flash ROM Interface = 0 Flash ROM Interface is enabled after hardware reset = 1 Flash ROM Interface is disabled after hardware reset This bit is read only, and set/reset by power-on setting pin. The corresponding power-on setting pin is PENROM#(pin 69) Bit 0: PNPCSV = 0 The Compatible PnP address select registers have default values. = 1 The Compatible PnP address select registers have no default value. The corresponding power-on setting pin is PNPCSV# (pin 43). CR25 (Default 0x00h) Bit 7 ~ 4: Reserved Bit 3: FIRTRI When write to "1" ,FIR interface is set to tri-state and reduce the power consumption of chip. Bit 2: URATRI When write to "1", UA RT interface is set to tri-state and reduce the power consumption of chip. Bit 1: PRTTRI When write to "1", PRT interface is set to tri-state and reduce the power consumption of chip. Bit 0: FDCTRI. When write to "1",FDC interface is set to tri-state and reduce the power consumption of chip.
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CR26 (Default 0s00,0000b) Bit 7: Reserved Bit 6: HEFRAS These two bits define how to enable Configuration mode. The corresponding power-on setting pin is RTSA# (pin 42). HEFRAS Address and Value = 0 Write 87h to the location 2E twice. = 1 Write 87h to the location 4Etwice. Bit 5: LOCKREG = 0 Enable R/W Configuration Registers. = 1 Disable R/W Configuration Registers. Bit 4: Reserved. Bit 3: DSFDLGRQ = 0 Enable FDC legacy mode on IRQ and DRQ selection, then DO register bit 3 is effective on selecting IRQ = 1 Disable FDC legacy mode on IRQ and DRQ selection, then DO register bit 3 is not effective on selecting IRQ Bit 2: DSPRLGRQ = 0 Enable PRT legacy mode on IRQ and DRQ selection, then DCR bit 4 is effective on selecting IRQ = 1 Disable PRT legacy mode on IRQ and DRQ selection, then DCR bit 4 is not effective on selecting IRQ Bit 1: DSUALGRQ = 0 Enable UART A legacy mode IRQ selecting, then MCR bit 3 is effective on selecting IRQ = 1 Disable UART A legacy mode IRQ selecting, then MCR bit 3 is not effective on selecting IRQ Bit 0: DSUBLGRQ = 0 Enable UART B legacy mode IRQ selecting, then MCR bit 3 is effective on selecting IRQ = 1 Disable UART B legacy mode IRQ selecting, then MCR bit 3 is not effective on selecting IRQ
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CR28 (Default 0000,0sssb) Bit 7 : PRT_NFDD# = 0 Enable PRT_NFDD# Function.(Default) = 1 Disable PRT_NFDD# Function. Bit 6 - 3: Reserved. Bit 2 - 0: PRTMODS2 - PRTMODS0 = 0xx Parallel Port Mode = 100 Reserved = 101 External FDC Mode = 110 Reserved = 111 External two FDC Mode When bit 7 = 0 , the bit 2 is controlled by Pin PRT_NFDD#. CR29 (GPIO10,GP11 Select ,Default 0sss,s000b) Bit 7: Reserved. Bit [6:5] : Pin 5 Func. Select = 00 GP11 = 01 WDTO = 10 RTCCS# = 11 IRQIN1 Bit[4:3] : Pin 4 Func. Select = 00 GP10 = 01 PLED = 10 P80CS# = 11 IRQIN0 Bit2~0: Reserved
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CR2A (GPIO1 ~ 5& FlashROM Interface Selectd ,Default 000s,ssssb) Bit 7~5 : Reserved Bit 4 : (PIN 81 ~ 84 ,PIN 86 ~ 89 ) = 0 GPIO 5X = 1 Flash I/F (XA11 ~ XA18) Bit 3 : (PIN 73 ~80 ) = 0 GPIO 4X = 1 Flash I/F (XA3 ~ XA10) Bit 2 : (PIN 57 ~ 59, PIN 61 ~ 64 , PIN 66) = 0 GPIO 3X = 1 Flash I/F (XD7 ~ XD0) Bit 1 : (PIN 71 ~72) = 0 GPIO 2X = 1 or CR24 bit7 =0 the Pin 71 ~ 72 is Flash I/F (XA1 ~ XA0) Bit 0: (PIN 67 ~ 70 ) = 0 GPIO1X = 1 Flash I/F( MEMR#, MEMW#, ROMCS#, XA0) This bits is set to 1 if Pin 69 is set to 0 during RESET Period. CR2B (POWER DOWN CONTROL Default s000,0000b) Bit 7 : = 0 Normal operation = 1 Enable Power down mode (Active with bit[2..0] are all set to "1") Bit 6 -3 : Reserved Bit 2 : Enable Flash interface Power-down = 0 Normal operation = 1 Flash interface is in power-down mode if CR2B bit 7 =1 or PDCTL# = 0) Bit 1 : Enable SERIRQ interface Power-down = 0 Normal operation = 1 SERIRQ interface is in power-down mode if CR2B bit 7 =1 or PDCTL# = 0) Bit 0 : Enable FDC,UR, FIR ,PRT interface Power-down = 0 Normal operation = 1 FDC, UR, FIR, PRT interface is in power-down mode if CR2B bit 7 =1 or PDCTL# = 0 Publication Release Date: Jul. 2002 Revision 1.0
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CR2C , CR2D , CR2E FOR WINBOND TEST Reserved. CR2C (Default 0x10h) bit 7 - 5 : Reserved bit 4-0 : Fresh interface Cycle time control .
12.5 Logical Device 0 (FDC)
CR30 (Default 0x01h if PNPCSV = 0 during POR, 0x00h otherwise) Bit 7 - 1: Reserved. Bit 0: = 1 Activates the logical device. = 0 Logical device is inactive. CR60, CR 61 (Default 0x03, 0xF0h if PNPCSV = 0 during POR, Default 0x00h, 0x00h otherwise) These two registers select FDC I/O base address [0x100:0xFF8] on 8 byte boundary. CR70 (Default 0x06 if PNPCSV = 0 during POR, 0x00h otherwise) Bit 7 - 4: Reserved. Bit 3 - 0: These bits select IRQ resource for FDC. CR74 (Default 0x02 if PNPCSV = 0 during POR, 0x04h otherwise) Bit 7 - 3: Reserved. Bit 2 - 0: These bits select DRQ resource for FDC. = 0x00h DMA0 = 0x01h DMA1 = 0x02h DMA2 = 0x03h DMA3 = 0x04h - 0x07h No DMA active CRF0 (Default 0x0Eh) FDD Mode Register Bit 7: FIPURDWN This bit controls the internal pull-up resistors of the FDC input pins RDATA, INDEX, TRAK0, DSKCHG, and WP. =0 =1 =0 =1 The internal pull-up resistors of FDC are turned on.(Default) The internal pull-up resistors of FDC are turned off. FDD interface signals are active low. FDD interface signals are active high.
Bit 6: INTVERTZ,This bit determines the polarity of all FDD interface signals.
Bit 5: DRV2EN (PS2 mode only) Publication Release Date: Jul. 2002 Revision 1.0
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When this bit is a logic 0, indicates a second drive is installed and is reflected in status register A. Bit 4: Swap Drive 0, 1 Mode =0 =1 = 11b No Swap (Default) Drive and Motor select 0 and 1 are swapped. AT Mode (Default)
Bit 3 - 2 Interface Mode = 10b (Reserved) = 01b PS/2 = 00b Model 30 Bit 1: FDC DMA Mode = 0 Burst Mode is enabled = 1 Non-Burst Mode (Default) Bit 0: Floppy Mode = 0 Normal Floppy Mode (Default) = 1 Enhanced 3-mode FDD CRF1 (Default 0x00h) Bit 7 - 6: Boot Floppy = 00b FDD A = 01b FDD B = 10b FDD C = 11b FDD D Bit 5, 4: Media ID1, Media ID0. These bits will be reflected on FDC's Tape Drive Register bit 7, 6. Bit 3 - 2: Density Select = 00 b Normal (Default) = 01b Normal = 10b 1 ( Forced to logic 1) = 11b 0 ( Forced to logic 0) Bit 1: DISFDDWR = 0 Enable FDD write. = 1 Disable FDD write(forces pins WE, WD stay high). Bit 0: SWWP = 0 Normal, use WP to determine whether the FDD is write protected or not. = 1 FDD is always write-protected. CRF2 (Default 0xFFh) Bit 7 - 6: FDD D Drive Type Bit 5 - 4: FDD C Drive Type Bit 3 - 2: FDD B Drive Type Bit 1 - 0: FDD A Drive Type
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CRF4 (Default 0x00h) FDD0 Selection: Bit 7: Reserved. Bit 6: Precomp. Disable. = 1 Disable FDC Precompensation. = 0 Enable FDC Precompensation. Bit 5: Reserved. Bit 4 - 3: DRTS1, DRTS0: Data Rate Table select (Refer to TABLE A). = 00b Select Regular drives and 2.88 format = 01b 3-mode drive = 10b 2 Meg Tape = 11b Reserved Bit 2: Reserved. Bit 1:0: DTYPE0, DTYPE1: Drive Type select (Refer to TABLE B). CRF5 (Default 0x00h) FDD1 Selection: Same as FDD0 of CRF4. TABLE A Drive Rate Table Select DRTS1 DRTS0 0 0 Data Rate DRATE1 1 0 0 1 1 0 0 1 1 0 0 1 DRATE0 1 0 1 0 1 0 1 0 1 0 1 0 Selected Data Rate MFM 1Meg 500K 300K 250K 1Meg 500K 500K 250K 1Meg 500K 2Meg 250K FM --250K 150K 125K --250K 250K 125K --250K --125K SELDEN
0
1
1
0
1 1 0 0 1 1 0 0 1 1 0 0
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TABLE B DTYPE0 0 DTYPE1 0 DRVDEN0(pin 2) SELDEN DRVDEN1(pin 3) DRATE0 DRIVE TYPE 4/2/1 MB 3.5"" 2/1 MB 5.25" 2/1.6/1 MB 3.5" (3-MODE)
0 1 1
1 0 1
DRATE1 SELDEN DRATE0
DRATE0 DRATE0 DRATE1
12.6 Logical Device 1 (Parallel Port)
CR30 (Default 0x01 if PNPCSV = 0 during POR, 0x00h otherwise) Bit 7 - 1: Reserved. Bit 0: = 1 Activates the logical device. = 0 Logical device is inactive. CR60, CR 61 (Default 0x03h, 0x78h if PNPCSV = 0 during POR, default 0x00h, 0x00h otherwise) These two registers select Parallel Port I/O base address. [0x100h: 0xFFCh] on 4 byte boundary (EPP not supported) or [0x100h: 0xFF8h] on 8 byte boundary (all modes supported, EPP is only available when the base address is on 8 byte boundary). CR70 (Default 0x07h if PNPCSV = 0 during POR, 0x00h otherwise) Bit 7 - 4: Reserved. Bit [3:0]: These bits select IRQ resource for Parallel Port. CR74 (Default 0x04h) Bit 7 - 3: Reserved. Bit 2 - 0: These bits select DRQ resource for Parallel Port. 0x00h = DMA0 0x01h = DMA1 0x02h = DMA2 0x03h = DMA3 0x04h - 0x07h = No DMA active
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CRF0 (Default 0x3Fh) Bit 7: Reserved. Bit 6 - 3: ECP FIFO Threshold. Bit 2 - 0: Parallel Port Mode (CR28 PRTMODS2 = 0) = 100b Printer Mode (Default) = 000b Standard and Bi-direction (SPP) mode = 001b EPP - 1.9 and SPP mode = 101b EPP - 1.7 and SPP mode = 010b ECP mode = 011b ECP and EPP - 1.9 mode = 111b ECP and EPP - 1.7 mode.
12.7 Logical Device 2 (UART A)
CR30 (Default 0x01h if PNPCSV = 0 during POR, 0x00h otherwise) Bit 7 - 1: Reserved. Bit 0: = 1 Activates the logical device. = 0 Logical device is inactive. CR60, CR 61 (Default 0x03h, 0xF8h if PNPCSV = 0 during POR, 0x00h, 0x00h otherwise) These two registers select Serial Port 1 I/O base address [0x100h:0xFF8h] on 8 byte boundary. CR70 (Default 0x04h if PNPCSV = 0 during POR, 0x00h otherwise) Bit 7 - 4: Reserved. Bit 3 - 0: These bits select IRQ resource for Serial Port 1. CRF0 (Default 0x00h) Bit 7: Reserved. Bit 6: UART enhanced mode. This bit should be set to "1" initially.(The bit is recommended to set "1" by BIOS initiation.) Bit 5-2: Reserved. Bit 1 - 0: SUACLKB1, SUACLKB0 = 00b = 01b = 10b = 11b UART A clock source is 1.8462 Mhz (24MHz/13) UART A clock source is 2 Mhz (24MHz/12) UART A clock source is 24 Mhz (24MHz/1) UART A clock source is 14.769 Mhz (24mhz/1.625)
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12.8 Logical Device 6 (FIR - For W83L517D Only)
CR30 (Default 0x00h) Bit 7 - 1: Reserved. Bit 0: = 1 Activates the logical device. = 0 Logical device is inactive. CR60, CR 61 (Default 0x00h, 0x00h) These two registers select IR I/O base address [0x100h : 0xFF8h] on 8 byte boundary. CR70 (Default 0x00h) Bit 7 - 4: Reserved. Bit [3:0]: These bits select IRQ resource for IR CR74 (Default 0x04h) Bit 7-3 : Reserved. Bit 2-0 : These bits select DRQ resource for RX of FIR. = 0x00h DMA0 = 0x01h DMA1 = 0x02h DMA2 = 0x03h DMA3 = 0x04h - 0x07h No DMA active CRF0 (Default 0x00h) Bit 7 - 4: Reserved. Bit 3: RXW4C =0 =1 RX mode. No reception delay when SIR is changed from TX mode to RX mode. Reception delays 4 characters-time (40 bit-time) when SIR is changed from TX mode to
Bit 2: TXW4C =0 No transmission delay when SIR is changed from RX mode to TX mode. =1 Transmission delays 4 characters-time (40 bit-time) when SIR is changed from RX mode to TX mode. Bit 1 : APEDCRC =0 =1 =0 No append hardware CRC value as data in FIR/MIR mode. Append hardware CRC value as data in FIR/MIR mode. Disable IR Bank selection. Publication Release Date: Jul. 2002 Revision 1.0
Bit 0 : ENBNKSEL; Bank select enable
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=1 Enable IR Bank selection.
Logical Device 7 ( GPIO Port 1) CR30 ( Default 0x00h) Bit 7 - 1: Reserved. Bit 0: = 1 GPIO1 port is Activate = 0 GPIO1 port is inactive. CR62, CR 63 (Default 0x00h, 0x00h ) These two registers select the GPIO1 base address [0x100h : 0xFFFh] on 4byte boundary. IO address : CRF1 base address IO address + 1 : CRF3 base address IO address + 2 : CRF4 base address IO address + 3 : CRF5 base address CR70 (Default 0x09 if PNPCSV = 0 during POR, default 0x00 otherwise when the port is active) Bit [7:4]: These bits select IRQ resource for IRQIN1. Bit [3:0]: These bits select IRQ resource for IRQIN0. CRF0 (GPIO1 selection register. Default 0xFFh) When set to a '1', respective GPIO port is programmed as an input port. When set to a '0', respective GPIO port is programmed as an output port. CRF1 (GPIO1 data register. Default 0x00h when the port is active) If a port is programmed to be an output port, then its respective bit can be read/written. If a port is programmed to be an input port, then its respective bit can only be read. CRF2 (GP5 inversion register. Default 0x00h when the port is active) When set to a '1', the incoming/outgoing port value is inverted. When set to a '0', the incoming/outgoing port value is the same as in data register. CRF3 (PLED mode register. Default 0x00h) Bit 7 ~ 3 : Reserved . Bit 2: select WDTO count mode. =0 =1 second minute
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Bit 1 ~ 0: select PLED mode = 00b = 01b = 10b = 11b Power LED pin is tri-stated. Power LED pin is droved low. Power LED pin is a 1Hz toggle pulse with 50 duty cycle. Power LED pin is a 1/4Hz toggle pulse with 50 duty cycle.
CRF4 (Default 0x00h) Watch Dog Timer Time-out value. Writing a non-zero value to this register causes the counter to load the value to Watch Dog Counter and start counting down. Reading this register returns current value in Watch Dog Counter instead of Watch Dog Timer Time-out value. Bit 7 - 0: = 0x00h Time-out Disable = 0x01h Time-out occurs after 1 second/minute = 0x02h Time-out occurs after 2 second/minutes = 0x03h Time-out occurs after 3 second/minutes ................................................ = 0xFFh Time-out occurs after 255 second/minutes CRF5 (Default 0x00h) Bit 7 ~ 6 : Reserved . Bit 5: Force Watch Dog Timer Time-out, Write only* = 1 Force Watch Dog Timer time-out event; this bit is self-clearing. Bit 4: Watch Dog Timer Status, R/W = 1 Watch Dog Timer time-out occurred. = 0 Watch Dog Timer counting Bit 3 -0: These bits select IRQ resource for Watch Dog. Setting of 2 selects SMI.
Logical Device 8 ( GPIO Port 2)
CR30 (Default 0x00h) Bit 7 - 1: Reserved. Bit 0: = 1 Activate GPIO2 = 0 GPIO2 is inactive. CR62, CR 63 (Default 0x00h, 0x00h) These two registers select the GPIO1 base address [0x100:0xFFF] on 1 byte boundary IO address : CRF1 base address CRF0 (GP10-GP17 I/O selection register. Default 0xFFh) When set to a '1', respective GPIO port is programmed as an input port. Publication Release Date: Jul. 2002 Revision 1.0
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When set to a '0', respective GPIO port is programmed as an output port. CRF1 (GP10-GP17 data register. Default 0x00h when the port is active, otherwise 0xFF) If a port is programmed to be an output port, then its respective bit can be read/written If a port is programmed to be an input port, then its respective bit can only be read CRF2 (GP10-GP17 inversion register. Default 0x00h when the port is active, otherwise 0xFF) When set to a '1', the incoming/outgoing port value is inverted. When set to a '0', the incoming/outgoing port value is the same as in data register.
Logical Device 9 (GPIO Port 3 ~ GPIO Port 5 )
CR30 (Default 0x00h) Bit 7 ~ 3: Reserved. Bit 2: = 1 Activate GPIO5. = 0 GPIO5 is inactive Bit 1: = 1 Activate GPIO4. = 0 GPIO4 is inactive Bit 0: = 1 Activate GPIO3. = 0 GPIO3 is inactive. CR60,61(Default 0x00h,0x00h). These two registers select the GP 3,4,5 base address(0x100h : FFFh) ON 3 bytes boundary. IO address : CRF1 base address IO address + 1 : CRF3 base address IO address + 2 : CRF7 base address CRF0 (GP3 I/O selection register. Default 0xFFh ) When set to a '1', respective GPIO port is programmed as an input port. When set to a '0', respective GPIO port is programmed as an output port. CRF1 (GP3 data register. Default 0x00h when the port is active, otherwise 0xFFh ) If a port is programmed to be an output port, then its respective bit can be read/written. If a port is programmed to be an input port, then its respective bit can only be read. CRF2 (GP3 inversion register. Default 0x00h when the port is active, otherwise 0xFFh) When set to a '1', the incoming/outgoing port value is inverted. When set to a '0', the incoming/outgoing port value is the same as in data register. CRF3 (GP4 I/O selection register. Default 0xFFh ) Publication Release Date: Jul. 2002 Revision 1.0
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W83L517D
When set to a '1', respective GPIO port is programmed as an input port. When set to a '0', respective GPIO port is programmed as an output port. CRF4 (GP4 data register. Default 0x00h when the port is active, otherwise 0xFFh) If a port is programmed to be an output port, then its respective bit can be read/written. If a port is programmed to be an input port, then its respective bit can only be read. CRF5 (GP4 inversion register. Default 0x00h when the port is active, otherwise 0xFFh) When set to a '1', the incoming/outgoing port value is inverted. When set to a '0', the incoming/outgoing port value is the same as in data register. CRF6 (GP5 I/O selection register. Default 0xFFh ) When set to a '1', respective GPIO port is programmed as an input port. When set to a '0', respective GPIO port is programmed as an output port. CRF7 (GP5 data register. Default 0x00h when the port is active, otherwise 0xFFh) If a port is programmed to be an output port, then its respective bit can be read/written. If a port is programmed to be an input port, then its respective bit can only be read. CRF8 (GP5 inversion register. Default 0x00h when the port is active, otherwise 0xFFh) When set to a '1', the incoming/outgoing port value is inverted. When set to a '0', the incoming/outgoing port value is the same as in data register.
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W83L517D
12.9 Logical Device A (ACPI)
CR30 (Default 0x00h) Bit 7 - 1: Reserved. Bit 0: = 1 Activates the logical device. = 0 Logical device is inactive. CR70 (Default 0x00h) Bit 7 - 4: Reserved. Bit 3 - 0: These bits select IRQ resources for S M I / PME CRE0 (Default 0x00h) Bit7 : ENCIRWAKEUP. Enable CIR to wake-up system . = 0 Disable CIR wake up function = 1 Enable CIR wake up function Bit 5 : CIR_STS. This bit is cleared by reading 1 this register. = 0 Disable = 1 Enable Bit6, 4 ~ 0 : Reserved CRE 1 (Default 0x00) CIR wake up index register The range of CIR wake up index register is 0x20 ~ px2F . CRE 2 CIR wake up data register This register holds the value of wake up key register indicated by CRE1. This register can be read/written. CRE5 (Default 0x00) Bit 7 : Reserved Bit 6 ~ 0 :Compared Code Length . When the compared codes are storage in the data register, these data length should be written to this register. CRE6 (Default 0x00) Bit 7 - 6: Reserved. Bit 5 - 0: CIR Baud Rate Divisor. The clock base of CIR is 32khz, so that the baud rate is 32khz divided by ( CIR Baud Rate Divisor + 1).
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W83L517D
CRE7 (Default 0x00) Bit 7 - 3: Reserved. Bit 2:Reset CIR Power-On function. After using CIR power-on, the software should write logical 1 to restart CIR power-on function. Bit 1: Invert RX Data. = 1 Inverting RX Data. = 0 Not inverting RX Data. Bit 0: Enable Demodulation. = 1 Enable received signal to demodulate. = 0 Disable received signal to demodulate. CRF0 (Default 0x00) Bit 7: CHIPPME. Chip level auto power management enable. =0 =1 =0 =1 =0 =1 disable the auto power management functions enable the auto power management functions. disable the auto power management functions enable the auto power management functions. disable the auto power management functions enable the auto power management functions.
Bit 6: CIRPME. Consumer IR port auto power management enable.
Bit 5: MIDIPME. MIDI port auto power management enable.
Bit 4: Reserved. Return zero when read. Bit 3: PRTPME. Printer port auto power management enable. =0 =1 =0 =1 =0 =1 =0 =1 disable the auto power management functions. enable the auto power management functions. disable the auto power management functions. enable the auto power management functions. disable the auto power management functions. enable the auto power management functions. disable the auto power management functions. enable the auto power management functions.
Bit 2: FDCPME. FDC auto power management enable.
Bit 1: URAPME. UART A auto power management enable.
Bit 0: URBPME. UART B auto power management enable.
CRF1 (Default 0x00) Bit 7: WAK_STS. This bit is set when the chip is in the sleeping state and an enabled resume Publication Release Date: Jul. 2002 Revision 1.0
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W83L517D
event occurs. Upon setting this bit, the sleeping/working state machine will transition the system to the working state. This bit is only set by hardware and is cleared by writing a 1 to this bit position or by the sleeping/working state machine automatically when the global standby timer expires. =0 =1 the chip is in the sleeping state. the chip is in the working state.
Bit 6 - 5: Devices' trap status. Bit 4: Reserved. Return zero when read. Bit 3 - 0: Devices' trap status. CRF3 (Default 0x00) Bit 7 ~ 4: Reserved. Return zero when read. Bit 3 ~ 0: Device's IRQ status. These bits indicate the IRQ status of the individual device respectively. The device's IRQ status bit set by their source device and is cleared by writing a 1. Writing a 0 has no effect. Bit 3: PRTIRQSTS. printer port IRQ status. Bit 2: FDCIRQSTS. FDC IRQ status. Bit 1: URAIRQSTS. UART A IRQ status. Bit 0: URBIRQSTS. FIR IRQ status. CRF4 (Default 0x00) Bit 7 ~ 4: Reserved. Return zero when read. Bit 3 ~ 0: These bits indicate the IRQ status of the individual GPIO function or logical device respectively. The status bit is set by their source function or device and is cleared by writing a1. Writing a 0 has no effect. Bit 2: WDTIRQSTS. Watch dog timer IRQ status. Bit 1~0: Reserved CRF9 (Default 0x00) Bit 7 - 3: Reserved. Return zero when read. Bit 2: PME_EN: Select the power management events to be either an PME or SMI interrupt for the IRQ events. Note that: this bit is valid only when SMIPME_OE = 1. = 0 the power management events will generate an SMI event. = 1 the power management events will generate an PME event. Bit 1: FSLEEP: This bit selects the fast expiry time of individual devices. is
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W83L517D
=0 1S = 1 8 mS. Bit 0: SMIPME_OE: This is the SMI and PME output enable bit. = 0 neither SMI nor PME will be generated. Only the IRQ status bit is set. = 1 an SMI or PME event will be generated.
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13
ORDERING INSTRUCTION
PART NO. PACKAGE 100-pin LQFP REMARKS
W83L517D
14 HOW TO READ THE TOP MARKING
Example: The top marking of W83L517D
inbond
W83L517D-F 20109620-91 014ADSA
1st line: Winbond logo 2nd line: the type number: W83L517D 3rd line: the tracking code 20109620-91 20109620-91: wafer production series lot number 4th line: the tracking code 014 A D SA 014: packages made in '2000, week 14 A: assembly house ID; A means ASE, S means SPIL.... etc. D: IC revision; A means version A, B means version B SA: for internal use
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W83L517D
15 PACKAGE DIMENSIONS
HD D 75 76 51
A A2
A1
50
HE E
100 1 e b 25
26 L c L1
Y
Controlling Dimension : Millimeters
Symbol A A1 A2 b c D E e HD HE L L1 y Dimension in inch Dimension in mm Min Nom Max Min Nom Max 1.60 0.063 0.002 0.05 0.053 0.055 0.057 1.35 1.40 0.007 0.009 0.011 0.17 0.22 0.004 0.006 0.008 0.10 0.15 0.547 0.551 0.556 13.90 14.00 0.547 0.551 0.556 13.90 14.00 0.020 0.50 0.622 0.630 0.638 15.80 16.00 0.622 0.630 0.638 15.80 16.00 0.018 0.024 0.030 0.45 0.60 1.00 0.039 0 0.004 7 0 1.45 0.27 0.20 14.10 14.10 16.20 16.20 0.75 0.10 7
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W83L517D
Headquarters
No. 4, Creation Rd. III Science-Based Industrial Park Hsinchu, Taiwan TEL: 886-35-770066 FAX: 886-35-789467 www: http://www.winbond.com.tw/
Winbond Electronics (H.K.) Ltd.
Rm. 803, World Trade Square, Tower II 123 Hoi Bun Rd., Kwun Tong Kowloon, Hong Kong TEL: 852-27516023-7 FAX: 852-27552064
Winbond Electronics (North America) Corp.
2730 Orchard Parkway San Jose, CA 95134 U.S.A. TEL: 1-408-9436666 FAX: 1-408-9436668
Taipei Office
11F, No. 115, Sec. 3, Min-Sheng East Rd. Taipei, Taiwan TEL: 886-2-7190505 FAX: 886-2-7197502 TLX: 16485 WINTPE
Please note that all data and specifications are subject to change without notice. All the trade marks of products and companies mentioned in this data sheet belong to their original owners.
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13 Recommended Circuit
FLASH ROM
XA18 XA17 XA16 XA15 XA14 XA13 XA12 XA11 XA10 XA9 XA8 XA7 XA6 XA5 XA4 XA3 XA2 XA1 XA0 1 30 2 3 29 28 4 25 23 26 27 5 6 7 8 9 10 11 12 U1 NC/A18 A17 A16 A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 13 14 15 17 18 19 20 21 XD0 XD1 XD2 XD3 XD4 XD5 XD6 XD7 XD[0..7] XD3 XD4 XD6 XD7 MEMR# MEMW# ROMCS# XA0 XA1 XA2 XA3 XA4 XA5 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 XD5 GND XD2 XD1 XD0 IOW# IOR# IRQ12IN IRQ1IN MCCS# KBCS# 3VCC U3
COM PORT
5VCC U2 20 RTSA# DTRA# SOUTA RIA# CTSA# DSRA# SINA DCDA# 16 15 13 19 18 17 14 12 11 VCC DA1 DA2 DA3 RY1 RY2 RY3 RY4 RY5 GND 14185 +12V DY1 DY2 DY3 RA1 RA2 RA3 RA4 RA9 -12V 1 5 6 8 2 3 4 7 9 10 NRTSA NDTRA NSOUTA NRIA NCTSA NDSRA NSINA -12VCC NDCDA 12VCC
XA[0..18]
5VCC
XA5/GP42 XA4/GP41 XA3/GP40 XA2/GP27 XA1/GP26 XA0/GP15 ROMCS#/GP14/PENROM# MEMW#/GP13 MEMR#/GP12 XD7/GP37 XD6/GP36 XD5/GP35 XD4/GP34 XD3/GP33 GND XD2/GP32 XD1/GP31 XD0/GP30 IOW#/GP25 IOR#/GP24 IRQ12IN/GP23 IRQ1IN/GP22 MCCS#/GP21 KBCS#/GP20/PENKB# VCC3V
VCC MEMW# MEMR# ROMCS# 31 24 22 WE# OE# CE# W29C020/40
32 O.1U 16 C1 XA6 XA7 XA8 XA9 XA10 XA11 XA12 XA13 XA14 GND XA15 XA16 XA17 XA18 5VCC HEAD# RDATA# WP# TRACK0# WE# WD# STEP# DIR# MOA# DSKCHG# 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 XA6/GP43 XA7/GP44 XA8/GP45 XA9/GP46 XA10/GP47 XA11/GP50 XA12/GP51 XA13/GP52 XA14/GP53 GND XA15/GP54 XA16/GP55 XA17/GP56 XA18/GP57 VCC HEAD# RDATA# WP# TRACK0# WE# WD# STEP# DIR# MOA# DSKCHG#
(SOP20)
50 IRSEL0 49 IRTX 48 IRRX 47 RIA# 46 DCDA# 45 SOUTA/PEN48 44 SINA 43 DTRA#/PNPCSV# 42 RTSA#/HEFRAS 41 DSRA# 40 VCC 39 CTSA# 38 STB# 37 AFD# 36 ERR# 35 GND 34 INIT# 33 SLIN# 32 PD7 31 PD6 30 PD5 29 PD4 28 PD3 27 PD2 26 PD1 IRSEL0 IRTX IRRX RIA# DCDA# SOUTA SINA DTRA# RTSA# DSRA# 5VCC CTSA# STB# AFD# ERR# GND INIT# SLIN# PD7 PD6 PD5 PD4 PD3 PD2 PD1 P1 NRIA NDTRA NCTSA NSOUTA NRTSA NSINA NDSRA NDCDA 5 9 4 8 3 7 2 6 1 CONNECTOR DB9
GND
Note6: (Before updating the code of flash ROM,CR registers of W83L517D and chipset must be setted) 5VCC 3VCC
RP1 XA0 XA1 XA2 XA3 XA4 XA5 XA6 XA7 XA8 2 1
3 4 5 6 7 8 9 10
8.2K
LAD0 LAD1 LAD2 LAD3 LFRAME# SERIRQ PDCTL#
5VCC
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
XA9 XA10 XA11 XA12 XA13 XA14 XA15 XA16 XA17
XA18 XD0 XD1 XD2 XD3 XD4 XD5 XD6 XD7
2 RP31 Note8: 3 4 The resistor of SERIRQ is option if Host 5 connected. 6 7 8 5VCC 9 10 R1 5VCC IRQ1IN 8.2K DSA# INDEX# DRVDEN0 2 RP41 Note1: P80CS# 3 8.2K RTCCS# 4 (P80CS# is decoded 80h and IOW#) CLKIN R2 IRQ12IN 5 (RTCCS# is decoded 48MHz) 71h) 70h 6 (CLKIN is 24 or PME# and LREST# 7 8 (PDCTL# should PDCTL# connect a 9 8.2K pull-high resistor)GND SERIRQ 10 PCICLK 8.2K
3VCC or 3VCC(stand by)
2 RP21 3 4 5 6 7 8 9 10 8.2K
FIR/SIR CON.
5VCC/3VCC JP1 IRSEL0 IRRX IRTX 1 2 3 4 5 HEADER 5
DSA# INDEX# DRVDEN0 P80CS#/GP10 RTCCS#/GP11 CLKIN PME# LREST# PDCTL# GND SERIRQ PCICLK LDRQ# LAD0 VCC3V LAD1 LAD2 LAD3 LFRAME# PRT_NFDD# SLCT PE BUSY ACK# PD0
W83L517D PD0 ACK# BUSY PE SLCT PRT_NFDD# LFRAME# LAD3 LAD2 LAD1 3VCC LAD0 LDRQ#
Note3: (PRT_NFDD# is used to detect external FDD)
Note2: (LDRQ# is connected to either one LDRQX of chipset)
R6 4.7K
Title Size B Date:
inbond
W83L517D LPC SUPER I/O Document Number L517_1 Tuesday, June 27, 2000 Sheet 1 of Rev 0.2
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W83L517D
FDD_VCC CN1 PD0 PD7 PD4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 5VCC R3 100K JP2 1 ROMCS# Q1 MOSFET P FDC_VCC 2 KBCS# 1 2 5VCC JUMPER JP3 1 2 JUMPER JP4 3 RTSA# 1 2 4.7K JUMPER 1 3 5 7 RP5 2 4 6 8
F.D.D
5VCC
R4 100K 2
(PENROM#)
3
AFD# PD6 INIT# PE SLCT
D1 1 PRT_NFDD# DIODE 2 1
Q2 DTC144EUA
(PENKB#)
R5 100K
(HEFRAS#)
PD1 PD2 PD3 ERR#
JP5 DTRA# 1 2 JUMPER
(PNPCSV#) Note5: (The recommened circuit is used to controll power ON/OFF of External FDD).
Note7: (JP2[ON condition] during Power-On --> Disable BIOS ROM functions) (JP3[ON condition] during Power-On --> Disable K/B functions) (JP4[ON condition] during Power-On -->Configuration ports change to 4Eh )
5VCC
(JP5[ON condition] during Power-On --> Disable all IO functions except K/B I/F)
D2 1 DIODE 2 1 1 D3 2 1 DIODE RP6 10P9R-2.7K
PRT PORT
2 3 4 5 6 7 8 9 10 STB# AFD# INIT# SLIN# PD[0..7] PD0 PD1 PD2 PD3 1 3 5 7 1 3 5 7 RPACK1 2 4 6 8 33 RPACK2 2 4 6 8 33 PD4 PD5 PD6 PD7 1 3 5 7 RPACK3 2 4 6 8 33 ERR# ACK# BUSY PE SLCT
RP7 10P9R-2.7K
Note4: (For External FDD usd,set two of pin[18..25] that GND pin to be PRT_NFDD# and FDD_VCC)
J1 1 14 2 15 3 16 4 17 5 18 6 19 7 20 8 21 9 22 10 23 11 24 12 25 13 DB25
C2 180
C3 180
C4 180
C5 180
C6 180
C7 180
C8 180
2 3 4 5 6 7 8 9 10
C9 180
C10 180 Title
C11 180
C12 180
C13 180
C14 180
C15 180
C16 180
C17 180
C18 180
inbond
W83L517D LPC SUPER I/O Document Number L517_2 Tuesday, June 27, 2000 Sheet 2 of Rev 0.2
Size B Date:
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Publication Release Date: Jul. 2002 Revision 1.0

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