View CY7C68310-80AC_310745.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

PRELIMINARY
CY7C68310
ISD-300LPTM Low-Power USB 2.0 to ATA/ATAPI Bridge IC
Cypress Semiconductor Corporation Document #: 38-08030 Rev. *C
*
3901 North First Street
*
San Jose, CA 95134
* 408-943-2600 Revised April 7, 2003
PRELIMINARY
CY7C68310
TABLE OF CONTENTS 1.0 INTRODUCTION .............................................................................................................................. 4 1.1 Features ...................................................................................................................................... 4 1.2 Applications ................................................................................................................................. 5 1.3 Additional Resources .................................................................................................................. 5 1.4 Functional Block Diagram ........................................................................................................... 6 2.0 PIN ASSIGNMENTS ........................................................................................................................ 7 2.1 Pin Diagram ................................................................................................................................ 7 2.2 Pin Overview ............................................................................................................................... 8 2.3 Detailed Pin Descriptions .......................................................................................................... 10
2.3.1 DP, DM ............................................................................................................................................ 10 2.3.2 RSDP, RSDM .................................................................................................................................. 10 2.3.3 TEST[0:3] ........................................................................................................................................ 10 2.3.4 XI, XO .............................................................................................................................................. 10 2.3.5 nEJECT ........................................................................................................................................... 10 2.3.6 SYSIRQ ........................................................................................................................................... 10 2.3.7 DRVPWRVLD ................................................................................................................................. 11 2.3.8 ATAEN ............................................................................................................................................ 11 2.3.9 GPIO Pins ....................................................................................................................................... 11 2.3.10 LOWPWR ...................................................................................................................................... 12 2.3.11 nRESET ........................................................................................................................................ 12 2.3.12 ATAPUEN ..................................................................................................................................... 12 2.3.13 nPWR500 ...................................................................................................................................... 12 2.3.14 SCL, SDA_nIMODE ...................................................................................................................... 12 2.3.15 DISKRDY ...................................................................................................................................... 12 2.3.16 VBUSPWRD ................................................................................................................................. 12 2.3.17 VBUSPWRVLD ............................................................................................................................. 12
3.0 FUNCTIONAL OVERVIEW ............................................................................................................ 12 3.1 USB Signaling Speeds .............................................................................................................. 12 3.2 ATA Interface ............................................................................................................................ 12
3.2.1 Vendor-specific EVENT_NOTIFY Command .................................................................................. 13
4.0 CONFIGURATION ......................................................................................................................... 14 4.1 CY7C68310 Configuration and USB Descriptor Sources ......................................................... 14
4.1.1 I2C-compatible Device .................................................................................................................... 14 4.1.2 IMode .............................................................................................................................................. 14 4.1.3 Internal ROM Contents ................................................................................................................... 14
4.2 EEPROM Organization ............................................................................................................. 15 4.3 Programming the EEPROM ...................................................................................................... 27
4.3.1 LOAD_CONFIG_DATA ................................................................................................................... 27 4.3.2 READ_CONFIG_DATA ................................................................................................................... 28
5.0 TIMING CHARACTERISTICS ........................................................................................................ 28 5.1 I2C-compatible Memory Device Interface Timing ...................................................................... 28 5.2 USB Interface Timing ................................................................................................................ 28 5.3 ATA/ATAPI Interface Timing ..................................................................................................... 28 5.4 External Clock Source Timing ................................................................................................... 29 5.5 Reset Timing ............................................................................................................................. 29 6.0 EXTERNAL CIRCUITRY REQUIREMENTS .................................................................................. 29 6.1 ATA Interface Termination ........................................................................................................ 29
Document #: 38-08030 Rev. *C Page 2 of 34
PRELIMINARY
CY7C68310
TABLE OF CONTENTS (continued) 6.2 Power Supply Regulation .......................................................................................................... 29 6.3 Pull-ups/Pull-downs on Three-stated Pins ................................................................................ 29 7.0 MANUFACTURING INTERCONNECT TEST SUPPORT .............................................................. 29 7.1 LOAD_MFG_DATA ................................................................................................................... 30 7.2 READ_MFG_DATA .................................................................................................................. 30 8.0 ABSOLUTE MAXIMUM RATINGS ................................................................................................ 31 9.0 OPERATING CONDITIONS ........................................................................................................... 32 10.0 DC CHARACTERISTICS ............................................................................................................. 32 11.0 ORDERING INFORMATION ........................................................................................................ 32 12.0 PCB LAYOUT RECOMMENDATIONS ........................................................................................ 32 13.0 PACKAGE DIAGRAM .................................................................................................................. 33 LIST OF FIGURES Figure 1-1. Block Diagram ....................................................................................................................... 6 Figure 2-1. 80-pin TQFP .......................................................................................................................... 7 Figure 2-2. SYSIRQ Latching Algorithm ................................................................................................ 11 Figure 5-1. I2C Interface Timing............................................................................................................. 28 Figure 6-1. External Circuitry Requirements.......................................................................................... 29 Figure 13-1. 80-pin TQFP Package Diagram ........................................................................................ 33 LIST OF TABLES Table 2-1. CY7C68310 Test Modes ..................................................................................................... 10 Table 2-2. USB Interrupt Pipe Data Bitmap .......................................................................................... 11 Table 3-1. Notification Register Reads ................................................................................................. 13 Table 3-2. Notification Register Write Values ....................................................................................... 13 Table 4-1. CY7C68310 Configuration and USB Descriptor Sources .................................................... 14 Table 4-2. EEPROM Organization ........................................................................................................ 15 Table 4-3. EEPROM-related Vendor-specific Question ........................................................................ 27 Table 7-1. LOAD_MFG_DATA Command Format ............................................................................... 30 Table 7-2. Bit-wise Mapping of LOAD_MFG_DATA Test Data ............................................................ 30 Table 7-3. READ_MFG_DATA Command Format ............................................................................... 30 Table 7-4. Bit-wise Mapping of READ_MFG_Data Test Data .............................................................. 31
Document #: 38-08030 Rev. *C
Page 3 of 34
PRELIMINARY
1.0 Introduction
CY7C68310
The CY7C68310 implements a bridge between one USB port and one ATA/ATAPI-based mass storage device port. This bridge adheres to the Mass Storage Class Bulk-Only Transport specification, version 1.0. The USB port of the CY7C68310 is connected to a host computer directly or via the downstream port of a USB hub. Host software issues commands and data to the CY7C68310 and receives status and data from the CY7C68310 using standard USB protocol. The ATA/ATAPI port of the CY7C68310 is connected to a mass storage device. A 2-Kbyte buffer maximizes ATA/ATAPI data transfer rates by minimizing losses due to device seek times. The ATA interface supports ATA PIO modes 0-4, and Ultra Mode DMA modes 0-4. The device initialization process is configurable, enabling the CY7C68310 to initialize most ATA/ATAPI devices without software intervention. The CY7C68310 can also be configured to allow software initialization of a device if initialization requirements are not supported by CY7C68310 algorithms.
1.1
Features
* Fixed-function mass storage device-requires no firmware code * USB Mass Storage Class Bulk-Only specification-compliant (version 1.0) * USB 2.0-compliant * Integrated USB transceiver * High-speed (480-Mbit) and full-speed (12-Mbit) support * USB Suspend/Resume, remote wakeup support * Two power modes of operation-self-powered and USB bus-powered * Low power allows for bus-powered operation * VBUS-powered CF support * Compact 80-pin TQFP package * ATA/ATAPI-6 specification-compliant-provides support for mass storage devices larger than 137GB * 5V tolerant inputs, 3.3V output drive * Flexible USB descriptor and configuration retrieval sources 2 * I C-compatible serial ROM interface * ATA interface using vendor-specific ATA command (FBh) implemented on ATAPI or ATA device * Default on-chip ROM contents for manufacturing/development * 2-Kbyte SRAM data buffer for ATA/ATAPI data transfers * ATA interface supports ATA PIO modes 0-4, UDMA modes 0-4 (multi-word DMA not supported). ATA interface operation mode is automatically selected during device initialization or manually programmed with I2C-compatible configuration data * Automatic detection of either Master or Slave ATA/ATAPI devices * Mode Page 5 Support-increased support for formatting removable media devices * ATA Interrupt support for ATAPI devices-offers more robust ATA support across OS platforms * System event notification via Vendor-specific ATA command * Input pin for media cartridge detection or ejection request * USB bus state indications (Reset, FS/HS mode of operation, Suspend/Resume, Bus/Self-powered) * Three General Purpose I/O (GPIO) pins * Multiple LUNs supported within a single ATAPI device * ATA translation provides seamless ATA support with standard MSC drivers * Additional ATA command support provided by vendor-specific ATACBs (ATA command blocks utilizing the MSC Command Block Wrapper) * Provisions to share ATA bus with other hosts (e.g. USB/1394 dual device) * Manufacturing interconnect test support provided with vendor-specific USB commands: * Read/Write access to relevant ASIC pins * Manufacturing Interconnect Test Tools * Utilizes inexpensive 30-Mhz crystal for clock source.
Document #: 38-08030 Rev. *C
Page 4 of 34
PRELIMINARY
1.2 Applications
CY7C68310
The CY7C68310 implements a USB 2.0 bridge for all ATA/ATAPI-6 compliant mass storage devices, such as: * Hard drives * CDROM, CDR/W * DVDROM, DVDRAM, DVDR/W * MP3 Players * Compact Flash * Microdrives * Tape drives * Personal Video Recorders.
1.3
* * * *
Additional Resources
CY4617-CY7C68310 Mass Storage Reference Design Kit USB Specification version 2.0 ATA Attachment-6 with Packet Interface revision 3b USB Mass Storage Class Bulk-Only Transport specification, Rev. 1.0
Document #: 38-08030 Rev. *C
Page 5 of 34
PRELIMINARY
1.4 Functional Block Diagram
CY7C68310
VBUS D+ D-
PT8A
nEJECT SYSIRQ DRVPWRVLD DISKRDY GPIO Pins (3) nRESET Control LOWPWR
CY7C68310 Control Logic
nPWR500 VBUSPWRVLD VBUSPWRD
ROM 256 Byte EEPROM SCL SDA EEPROM Interface Control
64 Byte RAM
2kByte FIFO
Bulk
ATA Interface Logic
ATAEN
ATA Control
Document #: 38-08030 Rev. *C
16-bit Data
USB
USB HS/FS Control Logic
USB 2.0 Xcvr
A A Cy Hh Y "
Page 6 of 34
PRELIMINARY
2.0
2.1
CY7C68310
Pin Assignments
Pin Diagram
DMARQ DD12 VDD33 DD3 VSS VDD25
DD15 DD0 DD14 DD1 DD13
DD11
VSS DD4 DD10
DD2
60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 VDD33 nDIOW nDIOR IORDY ATAPUEN nDMACK ATAIRQ DA1 VDD33 DA0 DA2 nCS0 nCS1 nPWR500 SCL SDA_nIMODE DISKRDY VBUSPWRD VBUSPWRVLD VDD25 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 123456 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 VDD25 DD7 TMC2 TMC1 nATARST nRESET LOWPWR SCANEN GPIO2_nHS GPIO1 GPIO0 ATAEN DRVPWRVLD SYSIRQ nEJECT TEST3 VDD33 XO XI VSS
CY7C68310-80AC
DD6 DD8
30 29 28 27 26 25 24 23 22 21
DD5 DD9 VDD25 TEST0
DP VDD33 DM
Figure 2-1. 80-pin TQFP
Document #: 38-08030 Rev. *C
VSS PVDD25 AVSS RREF
AVSS AVDD25 AVSS
VDD25
TEST1 TEST2
RSDM
VSS RSDP
VSS RPU
Page 7 of 34
PRELIMINARY
2.2 Pin Overview
Pin Name RPU RSDP DP DM RSDM TEST[0:3] XI XO nEJECT SYSIRQ DRVPWRVLD ATAEN Pin Direction O O I/O I/O O I I O I I I I Pin Type USB Output USB I/O USB I/O USB I/O USB I/O Pin Description
CY7C68310
Pin Number 2 5 6 8 9 18-20, 25 22 23 26 27 28 29
D+ pull-up source. Power source for 1.5k pull-up resistor attached to D+ during full speed operation. USB full speed output buffer (D+). RSDP also functions as a current sink for termination during high speed operation. USB high speed I/O buffer (D+). USB high speed I/O buffer (D-). USB full speed output buffer (D-). RSDM also functions as a current sink for termination during high speed operation.
5V-tolerant input Active HIGH. ASIC fabrication and manufacturing test mode select. buffer These pins must be tied to GND during normal operation. OSC input (2.5V- 30-MHz crystal input. tolerant) OSC output 5V-tolerant Schmitt input 5V-tolerant Schmitt input 5V-tolerant Schmitt input 5V-tolerant Schmitt input 3.3V drive, 5V-tolerant, 6-mA IOL, Schmitt input 5V tolerant input buffer three-state driver, 5V-tolerant, 6-mA IOL 5V-tolerant Schmitt input 3.3V drive, 5V-tolerant, 6-mA IOL 3.3V input 3.3V drive, 5V-tolerant, 6-mA IOL, Schmitt input 30-MHz crystal output. Active LOW. Media eject or remote wakeup requested. Tie to +3.3V if functionality is not used. Active HIGH. USB interrupt request. Tie to GND if functionality is not used. Configurable polarity. Device Presence Detect. This pin must not be allowed to float if functionality is not utilized. Active HIGH. ATA interface enable. `1' = normal ATA operation. `0' = ATA interface pins three-stated and ATA interface logic halted. General purpose I/O pins. The GPIO pins must be tied to GND if functionality is not utilized. If the hs_indicator config bit is set, the GPIO2_nHS pin will reflect the operating speed of the device: `1' = full-speed operation. `0' = high-speed operation. Active HIGH. ASIC test pin. This pin must be tied to GND during normal operation. Active HIGH. USB suspend indicator. `0' = Chip active. VBUS power up to 100 mA granted. `three-state' = Chip suspend. VBUS system current limited to USB suspend mode value Active LOW. Asynchronous chip reset. Active LOW. ATA reset signal.
30-32
GPIO[0:1], GPIO2_nHS
I/O
33 34
SCANEN LOWPWR
I O
35 36
nRESET nATARST
I O
37, 38 56, 54, 52, 49,46, 44, 42, 39, 41, 43, 45, 48, 51, 53, 55, 57 58 62
TMC[1:2] DD[0:15]
I I/O
Active HIGH. ASIC test pins. These pins must be tied to GND during normal operation. ATA data signals.
DMARQ nDIOW
I O
5V tolerant Schmitt input 3.3V drive, 5V-tolerant, 6-mA IOL
ATA control signal. ATA control signal.
Document #: 38-08030 Rev. *C
Page 8 of 34
PRELIMINARY
2.2 Pin Overview (continued)
Pin Name nDIOR Pin Direction O Pin Type 3.3V drive, 5V-tolerant, 6 mA IOL 5V-tolerant Schmitt input 3.3V drive, 5V-tolerant, 6 mA IOL 3.3V drive, 5V-tolerant, 6 mA IOL 5V-tolerant Schmitt input 3.3V drive, 5V-tolerant, 6 mA IOL 3.3V drive, 5V-tolerant, 6 mA IOL three-state driver, 5V-tolerant, 6 mA IOL three-state driver, 5V-tolerant, 6 mA IOL three-state driver, 5V-tolerant, 6 mA IOL, Schmitt input 5V-tolerant Schmitt input 5V-tolerant Schmitt input 5V-tolerant Schmitt input Power Power Power Power Power Power Power ATA control signal. Pin Description
CY7C68310
Pin Number 63
64 65
IORDY ATAPUEN
I O
ATA control signal. ATA IORDY pull-up connection. For VBUS-powered systems.
66
nDMACK
O
ATA control signal.
67 70, 68, 71
ATAIRQ DA[0:2]
I O
ATA interrupt request. ATA address signals.
72, 73
nCS[0:1]
O
ATA chip select signals.
74
nPWR500
O
Active LOW. VBUS power granted indicator. `0' = VBUS power up to bMaxPower value `three-state' = bMaxPower value not granted (if more than 100 mA) I2C-compatible clock. This pin may be left as a no-connect pin if the I2C-compatible interface is not utilized.
75
SCL
O
76
SDA_nlMODE
I/O
I2C-compatible address/data or nIMODE select.
77 78
DISKRDY VBUSPWRD
I I
Configurable polarity. Device ready. Active HIGH. Bus-powered operation select pin. `1' = Bus powered `0' = Self powered Active HIGH. Indicates that VBUS power is present. Digital ground. 2.5V digital supply. 3.3V digital supply. Analog 2.5V supply (PLL). Analog ground. PLL voltage reference. Current source for 2.4k (1%) resistor connected to AVSS. Analog 2.5V supply.
79 1, 4, 10, 21, 47, 60 3, 17, 40, 59, 80 7, 24, 50, 61, 69 11 12,14,16 13 15
VBUSPWRVLD VSS VDD25 VDD33 PVDD25 AVSS RREF AVDD25
I
Document #: 38-08030 Rev. *C
Page 9 of 34
PRELIMINARY
2.3
2.3.1
CY7C68310
Detailed Pin Descriptions
DP, DM
DP and DM are the high-speed USB signaling pins, and they should be tied to the D+ and D- pins of the USB connector. Because they operate at high frequencies, the USB signals require special consideration when designing the layout of the PCB. See section 12.0 for PCB layout guidelines. 2.3.2 RSDP, RSDM
RSDP and RSDM are the full-speed USB signaling pins, and they should be tied to the DP and DM pins through 39 resistors. RSDP and RSDM also function as current sinks for termination during high-speed operation. 2.3.3 TEST[0:3]
The test pins control the various test modes of the CY7C68310. Most test modes are reserved for ASIC fabrication, but the following table outlines the test modes available for device manufacturing environments. The test pins must be tied to GND for normal operation. Table 2-1. CY7C68310 Test Modes Test Mode 0000 0001 0010 Reserved. Limbo Mode. The CY7C68310 three-states all output pins during Limbo mode operation with the exception of the XO pin. The XO pin output cell does not have three-state control (always enabled), and must be disabled or disconnected by other means. To enter Limbo Mode, nRESET must be toggled after the Test pins are set to `0010'. Input xnorTree Mode. This mode tests the connectivity of all dedicated inputs and outputs. While in the Input xnorTree Mode of operation, all bi-directional pins are wired as chain outputs. The results of the connectivity procedure will be seen on all bidirectional pins. Chain Inputs (in order): VBUSPWRVLD, VBUSPWRD, DISKRDY, ATAIRQ, IORDY, DMARQ, nRESET, ATAEN, DRVPWRVLD, SYSIRQ, nEJECT Chain Outputs (in order): GPIO[2:0], DD[15:0], SDA_nIMODE. Bi-di xnorTree Mode. This mode test the connectivity of all bi-directional inputs. While in the Bi-di xnor Tree Mode of operation, all bi-directional pins are wired as inputs and become part of the xnor Tree chain. The results of the connectivity procedure will be seen on all output only pins. Chain Inputs: GPIO[0], GPIO[1], GPIO[2], DD[7], DD[8], DD[6], DD[0], DD[5], DD[10], DD[4], DD[11], DD[3], DD[12], DD[2], DD[13], DD[1], DD[14], DD[0], DD[15], SDA_nIMODE. Chain Outputs: nPWR500, nATARST, nDIOW, nDIOR, nDMACK, ATAPUEN, nCS[1:0], DA[2:0], LOWPWR, SCL Description Normal Mode. This is the default mode of operation.
0011
0100
0101-1111 Reserved. 2.3.4 XI, XO
The CY7C68310 requires a 30-MHz signal to derive internal timing. Typically a 30-MHz (2.5V tolerant, parallel-resonant fundamental mode) crystal is used, but a 30-MHz (2.5V, 50% duty cycle) square wave from another source can also be used. If a crystal is used, connect the pins to XI and XO, and also through 20pF capacitors to GND. If an alternate clock source is used, apply it to XI and leave XO open. 2.3.5 nEJECT
The nEJECT input pin provides a means to communicate an Eject button push to the ATA/ATAPI device via event notification as well as a way to cause a USB Remote-wakeup. During normal operation, asserting nEJECT low for 10ms indicates that a media eject has been requested. If the CY7C68310 is in a suspend state, and if remote wakeup is enabled by the USB host, a state change on this pin will immediately cause the CY7C68310 to perform a USB remote wakeup event. 2.3.6 SYSIRQ
The SYS_IRQ pin provides a way for systems to request service from host software by use of the USB Interrupt pipe. If the CY7C68310 has no pending interrupt data to return, USB interrupt pipe data requests are NAKed. If pending data is available, CY7C68310 returns 16 bits of data indicating the state of the DISK_READY pin, the HS_MODE signal that indicates whether CY7C68310 is operating in high-speed or full-speed, the VBUSPWRD pin, the User-Defined values from bits [7:3] of address 0xE of the configuration space, and the GPIO Pins. The table below gives the bitmap for the data returned on the interrupt pipe, and the figure beneath it depicts the latching algorithm incorporated by CY7C68310.The table below gives the bitmap for the data returned on the interrupt pipe, and the and the figure beneath it depicts the latching algorithm incorporated by the CY7C68310.
Document #: 38-08030 Rev. *C
Page 10 of 34
PRELIMINARY
Table 2-2. USB Interrupt Pipe Data Bitmap USB Interrupt Data Byte 1 7 0 2.3.7 2.3.8 2.3.9 6 0 ATAEN 5 0 4 0
No
CY7C68310
USB Interrupt Data Byte 0 1 USB High Speed 0 VBUSPWRD 7 USER_DEF[4] 6 USER_DEF[3] 5 USER_DEF[2] 4 USER_DEF[1] 3 USER_DEF[0] 2 GPIO[2] 1 GPIO[1] 0 GPIO[0]
3 0
2 DISKRDY
Yes
No
No
USB Interrupt Pipe Polled?
SYSIRQ=1?
Yes Yes Latch State of IO Pins Set Int_Data = 1
Int_Data = 1?
No NAK Request Yes Int_Data = 0 and SYSIRQ=0? Return Interrupt Data Set Int_Data = 0
Figure 2-2. SYSIRQ Latching Algorithm DRVPWRVLD DRVPWRVLD can be used with removable devices (such as compact flash) to indicate that the media device is present. Pin polarity and function enable are controlled by bits 4 and 2, respectively, of EEPROM address 0x0B.
The ATAEN pin allows ATA bus sharing with other host devices. Asserting ATAEN low causes the CY7C68310 to three-state all ATA bus interface pins and suspend ATA state machine activity, otherwise leaving the CY7C68310 operational (USB operation continues). Asserting ATAEN high causes the CY7C68310 to reset the drive to state 0 and resume normal operation. To disable USB operation and the ATA interface, the DRVPWRVLD signal can be used in conjunction with ATAEN to force the CY7C68310 into a low power state until normal operation is resumed. Note that disabling the ATA bus with the ATAEN pin during the middle of a data transfer will result in data loss and may cause the operating system on the host computer to crash. GPIO Pins
The GPIO pins allow for a general purpose Input/Output interface. Configuration bytes 0x0E and 0x0F contain the settings for the GPIO pins. See section 4.3 for details of how to use the vendor-specific commands to utilize the GPIO functionality. The status of the GPIO pins is also returned by a USB interrupt event. See section 2.3.6 for SYSIRQ details. Alternatively, If the hs_indicator config bit is set (bit 4 of EEPROM address 0x0F), the GPIO2_nHS pin will reflect the operating speed of the device. Document #: 38-08030 Rev. *C Page 11 of 34
PRELIMINARY
2.3.10 LOWPWR
CY7C68310
LOWPWR is an output pin that, when three-stated, indicates that the CY7C68310 is in a suspend state. When LOWPWR output is driven `0', the CY7C68310 is active. 2.3.11 nRESET
Asserting nRESET for a minimum of 1ms after power rails are stable will reset the entire chip. An RC reset circuit should be used that ensures that no spurious resets occur. 2.3.12 ATAPUEN
This output provides control for the required host pull-up resistors on the ATA interface. ATAPUEN is driven `0' when the ATA bus is inactive. ATAPUEN is driven `1' when ATA bus is active. ATAPUEN is three-stated along with all other ATA interface pins when ATAEN is deasserted. 2.3.13 nPWR500
nPWR500 is an external pin that, when asserted low, indicates VBUS current may be drawn up to the limit specified by the appropriate bMaxPower field of the USB configuration descriptors. If the CY7C68310 enters a low-power state, nPWR500 is deasserted. When normal operation is resumed, nPWR500 is restored accordingly. The nPWR500 pin should never be used to control power sources for the CY7C68310. 2.3.14 SCL, SDA_nIMODE If an external EEPROM device is used to store configuration information, the clock and data pins for the I2C-compatible port should be connected to the configuration EEPROM and to VCC through 2.2k resistors. If configuration information is to be obtained from the attached ATA/ATAPI device (IMODE), SCL should be left as a no-connect and SDA_nIMODE should be tied to GND. 2.3.15 DISKRDY
This input pin indicates the attached device is powered and ready to begin communication with the CY7C68310. DISKRDY qualifies the start of the CY7C68310 initialization sequence. A state change from `0' to `1' on DISKRDY will cause the CY7C68310 to wait for 25 ms before asserting nATARESET and re-initializing the device. The ATA interface state machines remain inactive and all of the ATA interface signals are driven logic '0' if DISKRDY is not asserted (assuming ATAEN = '1'). DISKRDY is filtered for 25 ms on the rising edge and cleared asynchronously on the falling edge. 2.3.16 VBUSPWRD
The VBUSPWRD input pin indicates whether the device will report itself as bus-powered or self-powered. Based upon the state of this pin at startup, the CY7C68310 will request the current specified in the bMaxPower field of the appropriate USB Configuration Descriptor. If VBUSPWRD is asserted high, the CY&C68310 will report that the device is bus-powered. If VBUSPWRD is deasserted low, the CY7C68310 will report that the device is self-powered. 2.3.17 VBUSPWRVLD
VBUSPWRVLD (USB VBUS Power Valid) indicates that VBUS power is present at the USB connector. VBUSPWRVLD is asserted high and qualifies driving the system's 1.5K pull-up resistor on D+ (the USB specification only allows the device to source power to D+ when the host is powered). VBUSPWRVLD is conditioned so that it is only asserted after valid chip configuration bits have been loaded.
3.0
3.1
Functional Overview
USB Signaling Speeds
The CY7C68310 operates at two of the three signal rates that are defined in the Universal Serial Bus Specification Revision 2.0: * Full-speed, with a signaling bit rate of 12 Mbits/sec. * High-speed, with a signaling bit rate of 480 Mbits/sec.[1]
3.2
ATA Interface
The ATA/ATAPI port on the CY7C68310 is compliant with the Information Technology-AT Attachment with Packet Interface-6 (ATA/ATAPI-6) Specification, T13/1410D Rev 2a. The CY7C68310 supports both ATAPI packet commands as well as ATA commands (by use of ATA Command Blocks). Refer to the USB Mass Storage Class (MSC) Bulk Only Transport Specification for information on Command Block formatting. Additionally, the CY7C68310 translates ATAPI SFF-8070i commands to ATA commands for seamless integration of ATA devices with generic Mass Storage Class BOT drivers. The CY7C68310 also provides a vendor-specific "event notify" ATA command to automatically communicate certain USB and system events to the attached device.
Document #: 38-08030 Rev. *C
Page 12 of 34
PRELIMINARY
3.2.1 Vendor-specific EVENT_NOTIFY Command
CY7C68310
The vendor-specific EVENT_NOTIFY command enables the CY7C68310 to communicate the occurrence of certain USB and system events to the attached device if the device's firmware supports the EVENT_NOTIFY command. The command code is specified by configuration address 0x02. Setting this byte to 0x00 disables the EVENT_NOTIFY feature. Table 3-1. Notification Register Reads Register Error Sector Count LBA Low (Sector Number) LBA Mid (Cylinder Low) LBA High (Cylinder High) Device/Head Status BUSY N/A N/A N/A 7 6 5 4 N/A N/A N/A nSTATE0 nSTATE1 N/A DRQ N/A N/A N/A 3 2 1 0
nSTATE0 and nSTATE1 are read from the device and stored for use as STATE0 and STATE1 during the next execution of the event notification command. nSTATE0 and nSTATE1 provide temporary non-volatile storage for devices whose power is controlled by NPWR500 (typically bus-powered systems). This allows the device to store information prior to entering a USB Suspend state for retrieval after resuming from the USB Suspend state. Note that a USB Reset from the host may interrupt the collection of data. The device must accommodate the potential for this occurrence. The BSY and DRQ bits must be cleared by the device upon the completion of an event notification command. Table 3-2. Notification Register Write Values Register Features Sector Count LBA Low (Sector Number) LBA Mid (Cylinder Low) LBA High (Cylinder High) Device/Head Command 7 USB Reset 6 Class Specific Reset 5 USB Suspend 4 USB Resume 3 Reserved SelfPowered N/A STATE0 STATE1 N/A Specified in Configuration byte 0x02 2 Reserved BusPowered 1 Eject Button Pressed USB High-Speed 0 Eject Button Released USB Full-Speed
Reserved Reserved Reserved Reserved
STATE0 and STATE1 are written with the value of NSTATE0 and NSTATE1 obtained from the previously completed event notification command. Assertion of NRESET resets STATE0 and STATE1to 0x00.
Note: 1. The CY7C68310 does not support the Low-speed signaling rate of 1.5 Mbits/sec.
Document #: 38-08030 Rev. *C
Page 13 of 34
PRELIMINARY
4.0 Configuration
CY7C68310
Certain timing parameters and operational modes for the CY7C68310 are configurable. Some USB configuration and descriptor values are also configurable. CY7C68310 configuration data should not be confused with the USB Configuration Descriptor data.
4.1
CY7C68310 Configuration and USB Descriptor Sources
CY7C68310 configuration and USB descriptor data can be retrieved from three sources. Table 4-1 indicates the method of determining which data source is used. Table 4-1. CY7C68310 Configuration and USB Descriptor Sources SDA_nIMODE = 0 No I2C-Compatible Device Present No I2C Signature Check Passes N/A CY7C68310 Configuration and USB Descriptor Retrieval Method In this mode, the CY7C68310 uses internal ROM contents for USB descriptor information and configuration register values. This mode is for debug/manufacturing operation only. Not for shipping products. In this mode, the CY7C68310 uses internal ROM contents for USB descriptor information. Configuration register values are loaded from internal ROM. This is not a valid mode of operation. The CY7C68310 retrieves all Descriptor and Configuration values from the vendor-specific Identify (FBh) data. The CY7C68310 is configured using internal ROM values until FBh data becomes available. The CY7C68310 uses internal ROM contents for USB descriptor information. Configuration register values are loaded from internal ROM. In this mode of operation, any CY7C68310 vendor-specific configuration access causes the CY7C68310 to recheck the signature field. Once the signature check passes, SROM data is returned for USB descriptors requests. This is not a valid mode of operation. The CY7C68310 retrieves all Descriptor and Configuration values from the I2C-compatible memory device. The CY7C68310 is configured using these values.
Yes
N/A
No
Yes
N/A
Yes
No
Yes
No
No
Yes
Yes
4.1.1
I2C-compatible Device
The CY7C68310 provides support for the 24LCXXB family of EEPROMs. Following the release of nRESET, the CY7C68310 waits 50 ms and then checks for I2C-compatible device presence. If an I2C-compatible device is present but does not pass signature check, the CY7C68310 re-tests the signature with each vendor-specific USB load or read access of configuration bytes 0 and 1. Once the signature check passes, I2C-compatible data is returned for USB descriptor requests. If an I2C-compatible device is detected initially, it is always assumed present until the next reset cycle (nRESET). If an I2C-compatible device is present, a lack of an ACK response when required causes the CY7C68310 to stall that USB request. The CY7C68310 will attempt the access again with the next USB request. 4.1.2 IMode
Configuration and descriptor data can also be supplied by an attached mass storage device (IMODE) through a vendor-specific Identify (FBh) ATA command. The CY7C68310 provides 256 bytes of internal RAM for FBh data storage. Unlike operation with an external I2C-compatible memory device, IMODE operation requires the attached device first be initialized and FBh data retrieved before the CY7C68310 can allow USB enumeration. To meet USB specification requirements, IMODE operation must be limited to systems that draw 100 mA or less from VBUS prior to USB enumeration. 4.1.3 Internal ROM Contents
The CY7C68310 also contains an internal set of CY7C68310 configuration and USB descriptors. The internal descriptors may only be used during manufacturing, as the internal ROM values disable some features required for normal operation to aid use in a manufacturing environment. See Table 4-2 for the organization of the internal ROM contents. The internal ROM descriptors do not provide a unique serial number (required for USB Mass Storage Class compliance), and therefore cannot be used for shipping products. An external I2C-compatible memory device or utilization of the vendor-specific FBh identify command is required to correctly configure the CY7C68310 for operation and provide a unique serial number for MSC compliance.
Document #: 38-08030 Rev. *C
Page 14 of 34
PRELIMINARY
4.2 EEPROM Organization
CY7C68310
CY7C68310 configuration and USB descriptor data can be supplied from an I2C-compatible serial memory device. The CY7C68310 can address 2 Kbytes of I2C-compatible data, but CY7C68310 configuration and USB descriptor information are limited to 512 bytes maximum. Unused register space in the I2C-compatible serial memory device may be used for product specific data storage. Note that no descriptor is allowed to span multiple pages within the I2C-compatible serial memory device. Table 4-2. EEPROM Organization I2C Address 0x00 0x01 0x02 Field Name Field Description Required I2C Data 0x4B 0x50 0x00 Example I2C Data
CY7C68310 Configuration Data I2C memory device Signature LSB I2C memory device Signature byte. (LSB) Register does not exist in HW. I2C memory device Signature MSB I2C memory device Signature byte. (MSB) Register does not exist in HW. Event Notification Bits (7:0) ATAPI event notification command. Setting this field to 0x00 disables this feature. Bits (7:0) ATA Device Automatic Power Management Value. If an attached ATA device supports APM and this field contains other than 0x00, the Initialization state machines will issue a SET FEATURES command to Enable APM with the register value during the drive initialization. Time in 128-millisecond granularity before the CY7C68310 stops polling the ALT STAT register for reset complete and restarts the reset process (0x80 = 16.4 seconds). Bit (7) - read-only. USB bus mode of operation `0' = USB bus is operating in full-speed mode (12 Mbit/sec). `1' = USB bus is operating in high-speed mode (480 Mbit/sec). ATAPI Command Block Size Bit (6) CBW Command Block Size. `0' = 12 byte ATAPI CB `1' = 16 byte ATAPI CB 0x05 Master/Slave Selection Bit (5) Device number selection. This bit is valid only when "Skip ATA/ATAPI Device Initialization" is active. Under CY7C68310 control ("Skip ATA/ATAPI Device Initialization = `0'), the value is ignored. `0' = Drive 0 (master) `1' = Drive 1 (slave) ATAPI Reset Bit (4) ATAPI reset during drive initialization. Setting this bit enables the ATAPI reset algorithm in the drive initialization state machines. ATA_NATAPI Bit (3) - read only. Indicates if an ATA or ATAPI device is detected. `0' = ATAPI device `1' = ATA device or possible device initialization failure.
0x03
APM Value
0x00
0x04
ATA Initialization Timeout
0x80
0x05
USB Bus Mode
0x00
Document #: 38-08030 Rev. *C
Page 15 of 34
PRELIMINARY
Table 4-2. EEPROM Organization (continued) I2C Address Field Name Force USB FS Bit(2) Force USB full speed only operation. Setting this bit prevents the CY7C68310 from negotiating HS operation during USB reset events `0' = Normal operation - allow HS negotiation during USB reset `1' = USB FS only - do not allow HS negotiation during USB reset VS/MSC SOFT_RESET Bit(1) Vendor-specific/MSC SOFT_RESET control. `0' = Vendor-specific USB command utilized for SOFT_RESET `1' = Mass Storage Class USB command utilized for SOFT_RESET DISKRDY Polarity Bit (0) DISKRDY active polarity. DISKRDY Polarity is ignored if IMODE is set to `1'. During IMODE operation DISKRDY polarity is active high. `0' = Active high polarity `1' = Active low polarity 0x06 ATA Command Designator Value in CBW CB field that designates if the CB is decoded as vendor-specific ATA/CFG commands instead of the ATAPI command block. Bits (7:1) - must be set to `0' Bit (0) This bit enables the CY7C68310 to accommodate ATAPI devices that take longer to initialize than what is allowed in the ATA/ATAPI-6 specification. `1' = Retry ATAPI `0' = Normal ATAPI timing 0x08 Initialization Status Bit (7) - read only Drive Initialization Status If set, indicates the drive initialization sequence state machine is active. Force ATA Device Bit (6) Allows software to manually enable ATA Translation with devices that do not support CY7C68310 device initialization algorithms. Force ATA Device must be set to `1' in conjunction with Skip ATA/ATAPI Device Initialization and ATA Translation Enable. Skip ATA/ATAPI Device Initial- Bit (5) ization Skip_Init - This bit should be cleared for IMODE operation. The host driver must initialize the attached device (if required) when this bit is set. For ATAPI devices, the host driver must issue an IDENTIFY command utilizing ATA. `0' = normal operation `1' = only reset the device and write the device control register prior to processing commands. Reserved Bit (4:3) - Must be set to `0' Field Description
CY7C68310
Required I2C Data
Example I2C Data
0x24
0x07
Reserved Retry ATAPI
0x01
0x00
Document #: 38-08030 Rev. *C
Page 16 of 34
PRELIMINARY
Table 4-2. EEPROM Organization (continued) I2C Address Field Name Last LUN Identifier 0x09 ATAEN Reserved SRST Enable Bits (2:0) Maximum number of LUNs device supports. Bit (7) - read only. Current logic state of the ATAEN pin Bits (6:1) - Must be set to `0' Bit (0) SRST reset during drive initialization. Setting this bit enables the SRST reset algorithm in the drive initialization state machines. 0x0A ATA Data Assert Bits (7:4) Standard values for ATA-compliant devices and a 30.0-MHz system clock (in binary).[1] mode 0 mode 1 mode 2 mode 3 mode 4 ATA Data Recover Bits (3:0) ATA cycle times are calculated using Data Assert and Data Recover values. Standard recover values and cycle times for ATA-compliant devices and a 30.0 MHz system clock (in binary).[1] mode 0 mode 1 mode 2 mode 3 mode 4 0x0B ATA Data Set-up Bits (7:5) Setup time is only incurred on the first data cycle of a burst. Standard values for ATA-compliant devices and a 30.0 MHz system clock are (in binary). mode 0 mode 1 mode 2 mode 3 mode 4 Drive Power Valid Polarity Bit (4) Controls the polarity of DRVPWRVLD pin `0' = Active low ("connector ground" indication) `1' = Active high (power indication from device) 010 001 001 001 000 (2+1)*33.33 = 133 ns (1+1)*33.33 = 66 ns (1+1)*33.33 = 66 ns (1+1)*33.33 = 66 ns (0+1)*33.33 = 33 ns 1100 0111 0011 0010 0000 (4+1)+(12+1)*33.33 = 600 ns (3+1)+(7+1)*33.33 = 400 ns (2+1)+(3+1)*33.33 = 233 ns (2+1)+(2+1)*33.33 = 200 ns (2+1)+(0+1)*33.33 = 133 ns 0101 0011 0011 0010 0010 (5+1)*33.33 = 200 ns (3+1)*33.33 = 133 ns (3+1)*33.33 = 133 ns (2+1)*33.33 = 100 ns (2+1)*33.33 = 100 ns Field Description
CY7C68310
Required I2C Data
Example I2C Data
0x01
0x20
0x00
Document #: 38-08030 Rev. *C
Page 17 of 34
PRELIMINARY
Table 4-2. EEPROM Organization (continued) I2C Address Field Name Override PIO Timing Bit (3) This field is used in conjunction with ATA Data Setup, ATA Data Assertion, ATA Data Recover, and PIO Mode Selection fields. `0' = Use timing information acquired from the Drive `1' = Override device timing information with configuration values Drive Power Valid Enable Bit (2) Enable for the DRVPWRVLD pin. Drive Power Valid should only be enabled in cable applications where the CY7C68310 is VBUS powered. `0' = pin disabled (most systems) `1' = pin enabled ATA Read Kludge Bit(1) PIO data read three-state control. Enabling this will threestate the ATA data bus during PIO read operations while addressing the data register. In most applications this bit is set to `0.' `0' = Normal operation as per ATA/ATAPI interface specification. `1' = three-state DD[15:0] during PIO data register reads. IMODE 0x0C SYSIRQ DISKRDY ATA Translation Enable Bit (0) - read only This bit reflects the state of the IMODE input pin at startup. Bits(7) - read only This bit reflects the current logic state of the SYSIRQ input. Bit(6) - read only This bit reflects the current logic state of the DISKRDY input. Bit(5) Enable ATAPI to ATA protocol translation enable. If enabled, AND if an ATA device is detected, ATA translation is enabled. If Skip ATA/ATAPI Device Initialization is set `1,' Force ATA Device must also be set `1' in order to utilize ATA translation. `0' = ATA Translation Disabled `1' = ATA Translation Enable ATA UDMA Enable Bit(4) Enable Ultra Mode data transfer support for ATA devices. If enabled, AND the ATA device reports UDMA support, the CY7C68310 will utilize UDMA data transfers. `0' = Disable ATA device UDMA support `1' = Enable ATA device UDMA support ATAPI UDMA Enable Bit(3) Enable Ultra Mode data transfer support for ATAPI devices. If enabled, AND the ATAPI device reports UDMA support, the CY7C68310 will utilize UDMA data transfers. `0' = Disable ATAPI device UDMA support `1' = Enable ATAPI device UDMA support Field Description
CY7C68310
Required I2C Data
Example I2C Data
0x3C
Document #: 38-08030 Rev. *C
Page 18 of 34
PRELIMINARY
Table 4-2. EEPROM Organization (continued) I2C Address Field Name ROM UDMA Mode Bits(2:0) ROM UDMA Mode indicates the highest UDMA mode supported by the product. The CY7C68310 will utilize the lesser of ROM UDMA Mode or the highest mode supported by the device. UDMA read operation mode timing is controlled by the device. mode 0 mode 1 mode 2 mode 3 mode 4 0x0D PIO Mode Selection Bits (7:5) PIO Mode Selection. The PIO mode reported back to the device if the Override PIO Timing configuration bit is set. This field represents the PIO mode of operation configured by the ATA Data Setup, ATA Data Assertion, ATA Data Recover, and Override PIO Ti mode 0 mode 1 mode 2 mode 3 mode 4 Skip Pin Reset Bit (4) Skip nATARST assertion. Setting this bit prevents the CY7C68310 from asserting nATARST during initialization of the ATA/ATAPI device. If this bit is set to `1', SRST Enable (address 0x09, bit 0) must also be set to `1'. `0' = Allow nATARST assertion `1' = Disable nATARST assertion Reserved 0x0E Reserved General Purpose IO Bits (3:0) - must be set to `0' Bits (7:3) Bits(2:0) GPIO[2:0] pin values When the GPIO pins are configured as outputs, writing to these bits will set the logic value of the GPIO pins to `0' or `1'. Reading this address, regardless of whether the GPIO pins are set to input or output, returns the logic value from the GPIO pins. 0x0F ATAPI IRQ Disable Bit (7) Disables the use of the ATAIRQ signal with ATAPI devices. `1' = disabled Reserved Int Reason Disable Bit (6) - must be set to `0'. Bit (5) Setting to a `1' causes CY7C68310 to ignore the contents of the interrupt reason register when talking to an ATAPI device. 000 001 010 011 100 000 001 010 011 100 133.3 ns per 16-bit word write 100 ns per 16-bit word write 66.7 ns per 16-bit word write 66.7 ns per 16-bit word write 33.3 ns per 16-bit word write Field Description
CY7C68310
Required I2C Data
Example I2C Data
0x90
0x00
0x07
Document #: 38-08030 Rev. *C
Page 19 of 34
PRELIMINARY
Table 4-2. EEPROM Organization (continued) I2C Address Field Name HS Indicator Enable Bit (4) Enables GPIO2_nHS pin to indicate the current operating speed of the device. `0' = normal GPIO operation. `1' = high-speed indicator enable. Reserved General Purpose IO threestate Control Bit (3) This bit must be set to `1'. Bits (2:0) GPIO[2:0] three-state control. `0' = Output enabled (GPIO pin is an output). `1' = three-state (GPIO pin is an input). USB Device Descriptor 0x10 0x11 0x12 0x13 0x14 0x15 0x16 0x17 0x18 0x19 0x1A 0x1B 0x1C 0x1D bLength bDescriptor Type bcdUSB (LSB) bcdUSB (MSB) bDeviceClass bDeviceSubClass bDeviceProtocol bMaxPacketSize0 idVendor (LSB) idVendor (MSB) idProduct (LSB) idProduct (MSB) bcdDevice (LSB) bcdDevice (MSB) Device release number in BCD lsb (product release number) Device release number in BCD msb (silicon release number). This field entry is always returned from internal ROM contents, regardless of the descriptor source. Index to manufacturer string. This entry must equal half of the address value where the string starts or 0 if the string does not exist. Index to product string. This entry must equal half of the address value where the string starts or 0 if the string does not exist. Index to serial number string. This entry must equal half of the address value where the string starts or 0 if the string does not exist. The USB Mass Storage Class Bulk Only Transport Specification requires a unique serial number. Number of configurations supported. Length of device descriptor in bytes. Descriptor type. USB specification release number in BCD. Device class. Device subclass. Product ID Device class Device subclass Device protocol Maximum USB packet size supported. Vendor ID Length of device descriptor in bytes. Descriptor type for device descriptor. USB Specification release number in BCD. Field Description
CY7C68310
Required I2C Data
Example I2C Data
0x12 0x01 0x00 0x02 0x00 0x00 0x00 0x40 0xB4 0x04 0x31 0x68 0x00 0x01
0x1E
iManufacturer
0x49
0x1F
iProduct
0x5F
0x20
iSerialNumber
0x73
0x21 0x22 0x23 0x24 0x25 0x26 0x27
bNumConfigurations bLength bDescriptorType bcdUSB (LSB) bcdUSB (MSB) bDeviceClass bDeviceSubClass
0x01 0x0A 0x06 0x00 0x02 0x00 0x00
USB Device Qualifier Descriptor
Document #: 38-08030 Rev. *C
Page 20 of 34
PRELIMINARY
Table 4-2. EEPROM Organization (continued) I2C Address 0x28 0x29 0x2A 0x2B 0x2C 0x2D 0x2E 0x2F 0x30 0x31 0x32 Field Name bDeviceProtocol bMaxPacketSize0 bNumConfigurations bReserved bLength bDescriptorType bTotalLength (LSB) bTotalLength (MSB) bNumInterfaces bConfiguration Value iConfiguration Device protocol. Maximum USB packet size supported Number of configurations supported. Reserved. Must be set to 0. Length of Configuration descriptor in bytes. Descriptor type. Number of bytes returned in this configuration. This includes the configuration descriptor plus all the interface and endpoint descriptors. Number of interfaces supported. The CY7C68310 only supports one interface. The value to use as an argument to Set Configuration to select the configuration. This value must be set to 0x02. Index to the configuration string. This entry must equal half of the address value where the string starts or 0x00 if the string does not exist. Device attributes for this configuration. Configuration characteristics: Bit Description On board default 7 Reserved. Set to `1' `1' 6 Self powered `0' = Bus powered device 5 Remoter wake-up `0' 4:0 Reserved. Set to `0' `0' Maximum power consumption for this configuration. Units used are mA*2 (i.e., 0x31 = 98 mA, 0xF9 = 498 mA). Length of Configuration descriptor in bytes. Descriptor type. Number of bytes returned in this configuration. This includes the configuration descriptor plus all the interface and endpoint descriptors. Number of interfaces supported. The CY7C68310 only supports one interface. The value to use as an argument to Set Configuration to select the configuration. This value must be set to 0x02 Index to the configuration string. This entry must equal half of the address value where the string starts or 0x00 if the string does not exist. Device attributes for this configuration. Configuration characteristics: Bit Description On board default 7 Reserved. Set to `1' `1' 6 Self powered `0' = Bus powered device 5 Remoter wake-up `0' 4:0 Reserved. Set to `0' `0' Maximum power consumption for this configuration. Units used are mA*2 (i.e., 0x31 = 98 mA, 0xF9 = 498 mA). Length of interface descriptor in bytes. Field Description
CY7C68310
Required I2C Data 0x40 0x01 0x00 0x09 0x02 0x27 0x00 0x01 0x02
Example I2C Data 0x00
USB Standard Configuration Descriptor (VBUSPWRD active)
0x00
0x33
bmAttributes
0x80
0x34
bMaxPower
0xF9
USB Other Speed Configuration Descriptor (VBUSPWRD active) 0x35 0x36 0x37 0x38 0x39 0x3A 0x3B bLength bDescriptorType bTotalLength (LSB) bTotalLength (MSB) bNumInterfaces bConfiguration Value iConfiguration 0x09 0x07 0x27 0x00 0x01 0x02 0x00
0x3C
bmAttributes
0x80
0x3D
bMaxPower
0xF9
USB Interface Descriptor (High-speed) 0x3E bLength 0x09 Page 21 of 34
Document #: 38-08030 Rev. *C
PRELIMINARY
Table 4-2. EEPROM Organization (continued) I2C Address 0x3F 0x40 0x41 0x42 0x43 0x44 0x45 0x46 Field Name bDescriptorType bInterfaceNumber bAlternateSettings bNumEndpoints bInterfaceClass bInterfaceSubClass bInterfaceProtocol iInterface Descriptor type. Interface number. Alternate settings Number of endpoints Interface class. Interface subclass. Interface protocol. Index to first interface string. This entry must equal half of the address value where the string starts or zero if the string does not exist. Length of this descriptor in bytes. Endpoint descriptor type. This is an Out endpoint, endpoint number 1. This is a bulk endpoint. Max data transfer size. High-speed interval for polling (max NAK rate). Length of this descriptor in bytes. Endpoint descriptor type. This is an Out endpoint, endpoint number 2. This is a bulk endpoint. Max data transfer size. High-speed interval for polling (max NAK rate). Length of this descriptor in bytes. Endpoint descriptor type. This is an Out endpoint, endpoint number 3. This is a bulk endpoint. Max data transfer size. High-speed interval for polling (max NAK rate). Reserved. Length of interface descriptor in bytes. Descriptor type. Interface number. Alternate settings Number of endpoints Interface class. Interface subclass. Interface protocol. Field Description
CY7C68310
Required I2C Data 0x04 0x00 0x00 0x03
Example I2C Data
0x08 0x06 0x50 0x00
USB Bulk Out Endpoint (High-speed) 0x47 0x48 0x49 0x4A 0x4B 0x4C 0x4D 0x4E 0x4F 0x50 0x51 0x52 0x53 0x54 0x55 0x56 0x57 0x58 0x59 0x5A 0x5B 0x5C 0x5D 0x5E 0x5F 0x60 0x61 0x62 0x63 0x64 bLength bDescriptorType bEndpointAddress bmAttributes wMaxPacketSize (LSB) wMaxPacketSize (MSB) bInterval bLength bDescriptorType bEndpointAddress bmAttributes wMaxPacketSize (LSB) wMaxPacketSize (MSB) bInterval bLength bDescriptorType bEndpointAddress bmAttributes wMaxPacketSize (LSB) wMaxPacketSize (MSB) bInterval Reserved bLength bDescriptorType bInterfaceNumber bAlternateSettings bNumEndpoints bInterfaceClass bInterfaceSubClass bInterfaceProtocol 0x07 0x05 0x82 0x02 0x00 0x02 0x01 0x07 0x05 0x01 0x02 0x00 0x02 0x01 0x07 0x05 0x83 0x03 0x02 0x00 0x0C 0x00 0x09 0x04 0x00 0x00 0x03 0x08 0x06 0x50 Page 22 of 34
USB Bulk In Endpoint (High-speed)
USB Interrupt Endpoint (High-speed)
USB Interface Descriptor (Full-speed)
Document #: 38-08030 Rev. *C
PRELIMINARY
Table 4-2. EEPROM Organization (continued) I2C Address 0x65 Field Name iInterface Field Description Index to first interface string. This entry must equal half of the address value where the string starts or zero if the string does not exist. Length of this descriptor in bytes. Endpoint descriptor type. This is an Out endpoint, endpoint number 1. This is a bulk endpoint. Max data transfer size. High-speed interval for polling (max NAK rate). Does not apply to FS bulk endpoints, set to zero. Length of this descriptor in bytes. Endpoint descriptor type. This is an Out endpoint, endpoint number 2. This is a bulk endpoint. Max data transfer size. High-speed interval for polling (max NAK rate). Does not apply to FS bulk endpoints, set to zero. Length of this descriptor in bytes. Endpoint descriptor type. This is an Out endpoint, endpoint number 3. This is a bulk endpoint. Max data transfer size. High-speed interval for polling (max NAK rate). Reserved. LANGID descriptor length Descriptor type Language supported (0x0409 = US English)
CY7C68310
Required I2C Data
Example I2C Data 0x00
USB Bulk Out Endpoint (Full-speed) 0x66 0x67 0x68 0x69 0x6A 0x6B 0x6C bLength bDescriptorType bEndpointAddress bmAttributes wMaxPacketSize (LSB) wMaxPacketSize (MSB) bInterval 0x07 0x05 0x82 0x02 0x40 0x00 0x00
USB Bulk In Endpoint (Full-speed) 0x6D 0x6E 0x6F 0x70 0x71 0x72 0x73 bLength bDescriptorType bEndpointAddress bmAttributes wMaxPacketSize (LSB) wMaxPacketSize (MSB) bInterval 0x07 0x05 0x01 0x02 0x40 0x00 0x00
USB Interrupt Endpoint (Full-speed) 0x74 0x75 0x76 0x77 0x78 0x79 0x7A 0x7B 0x7C 0x7D 0x7E 0x7F 0x80 0x81 0x82 0x83 0x84 0x85 bLength bDescriptorType bEndpointAddress bmAttributes wMaxPacketSize (LSB) wMaxPacketSize (MSB) bInterval Reserved bLength bDescriptorType LANGID (lsb) LANGID (msb) bLength bDescriptorType bTotalLength (LSB) bTotalLength (MSB) bNumInterfaces bConfiguration Value Length of Configuration descriptor in bytes. Descriptor type. Number of bytes returned in this configuration. This includes the configuration descriptor plus all the interface and endpoint descriptors. Number of interfaces supported. The CY7C68310 only supports one interface. The value to use as an argument to Set Configuration to select the configuration. This value must be set to 0x02 0x09 0x02 0x27 0x00 0x01 0x02 0x07 0x05 0x83 0x03 0x02 0x00 0xFF 0x00 0x04 0x03 0x09 0x04
USB String Descriptor - Index 0 (LANGID)
USB Standard Configuration Descriptor (VBUSPWRD Inactive)
Document #: 38-08030 Rev. *C
Page 23 of 34
PRELIMINARY
Table 4-2. EEPROM Organization (continued) I2C Address 0x86 Field Name iConfiguration Field Description Index to the configuration string. This entry must equal half of the address value where the string starts or 0x00 if the string does not exist. Device attributes for this configuration. Configuration characteristics: Bit Description On board default 7 Reserved. Set to `1' `1' 6 Self powered. `1' = Self powered device 5 Remoter wake-up. `0' 4:0 Reserved. Set to `0' `0' Maximum power consumption for this configuration. Units used are mA*2 (i.e., 0x31 = 98 mA, 0xF9 = 498 mA). Length of Configuration descriptor in bytes. Descriptor type. Number of bytes returned in this configuration. This includes the configuration descriptor plus all the interface and endpoint descriptors. Number of interfaces supported. The CY7C68310 only supports one interface. The value to use as an argument to Set Configuration to select the configuration. This value must be set to 0x02 Index to the configuration string. This entry must equal half of the address value where the string starts or 0x00 if the string does not exist. Device attributes for this configuration. Configuration characteristics: Bit 7 6 5 4:0 0x91 BMaxPower Description Reserved. Set to `1' Self powered Remoter wake-up Reserved. Set to `0' On board default `1' `1' = Self powered device `0' `0'
CY7C68310
Required I2C Data
Example I2C Data 0x00
0x87
BmAttributes
0xC0
0x88
BMaxPower
0x31
USB Other Speed Configuration Descriptor (VBUSPWRD inactive) 0x89 0x8A 0x8B 0x8C 0x8D 0x8E 0x8F bLength bDescriptorType bTotalLength (LSB) bTotalLength (MSB) bNumInterfaces bConfiguration Value iConfiguration 0x09 0x07 0x27 0x00 0x01 0x02 0x00
0x90
BmAttributes
0xC0
Maximum power consumption for this configuration. Units used are mA*2 (i.e. 0x31 = 98 mA, 0xF9 = 498 mA). String descriptor length in bytes. Descriptor type. ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character.
0x31
USB String Descriptor - Manufacturer 0x92 0x93 0x94 0x95 0x96 0x97 0x98 0x99 0x9A 0x9B 0x9C 0x9D 0x9E bLength bDescriptorType bString bString bString bString bString bString bString bString bString bString bString 0x2C 0x03 0x43 ("C") 0x00 0x79 ("y") 0x00 0x70 ("p") 0x00 0x72 ("r") 0x00 0x65 ("e") 0x00 0x73 ("s") Page 24 of 34
Document #: 38-08030 Rev. *C
PRELIMINARY
Table 4-2. EEPROM Organization (continued) I2C Address 0x9F 0xA0 0xA1 0xA2 0xA3 0xA4 0xA5 0xA6 0xA7 0xA8 0xA9 0xAA 0xAB 0xAC 0xAD 0xAE 0xAF 0xB0 0xB1 0xB2 0x1B 0xB4 0xB5 0xB6 0xB7 0xB8 0x1B 0xBA 0xBB 0xBC 0xBD 0xBE 0xBF 0xC0 0xC1 0x1C 0xC3 0xC4 0xC5 0xC6 0xC7 0xC8 bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bLength bDescriptorType bString bString bString bString bString bString bString bString bString Field Name (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) String descriptor length in bytes. Descriptor Type. ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. Field Description
CY7C68310
Required I2C Data
Example I2C Data 0x00 0x73 ("s") 0x00 0x20 (" ") 0x00 0x53 ("S") 0x00 0x65 ("e") 0x00 0x6D ("m") 0x00 0x69 ("i") 0x00 0x63 ("c") 0x00 0x6F ("o") 0x00 0x6E ("n") 0x00 0x64 ("d") 0x00 0x75 ("u") 0x00 0x63 ("c") 0x00 0x74 ("t") 0x00 0x6F ("o") 0x00 0x72 ("r") 0x00 0x2A 0x03 0x55 ("U") 0x00 0x53 ("S") 0x00 0x52 ("B") 0x00 0x20 (" ") 0x00 0x53 ("S")
USB String Descriptor - Product
Document #: 38-08030 Rev. *C
Page 25 of 34
PRELIMINARY
Table 4-2. EEPROM Organization (continued) I2C Address 0xC9 0xCA 0xCB 0xCC 0xCD 0xCE 0xCF 0xD0 0xD1 0xD2 0xD3 0xD4 0xD5 0xD6 0xD7 0xD8 0xD9 0xDA 0xDB 0xDC 0xDD 0xDE 0xDF 0xE0 0xE1 0xE2 0xE3 0xE4 0xE5 0xE6 0xE7 0xE8 0xE9 0xEA 0xEB 0xEC 0xED 0xEE 0xEF 0xF0 0xF1 0xF2 bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bString bLength bDescriptorType bString bString bString bString bString bString bString bString bString bString bString Field Name (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) ASCII character. (NUL) String descriptor length in bytes. Descriptor type. Serial number byte #1 Serial number byte #2 Serial number byte #3 Serial number byte #4 Serial number byte #5 Serial number byte #6 Serial number byte #7 Serial number byte #8 Serial number byte #9 Serial number byte #10 Serial number byte #11 Field Description
CY7C68310
Required I2C Data
Example I2C Data 0x00 0x74 ("t") 0x00 0x6F ("o") 0x00 0x72 ("r") 0x00 0x61 ("a") 0x00 0x67 ("g") 0x00 0x65 ("e") 0x00 0x20 (" ") 0x00 0x41 ("A") 0x00 0x64 ("d") 0x00 0x61 ("a") 0x00 0x70 ("p") 0x00 0x74 ("t") 0x00 0x65 ("e") 0x00 0x72 ("r") 0x00 0x1A 0x03 0xXX (?) 0xXX (?) 0xXX (?) 0xXX (?) 0xXX (?) 0xXX (?) 0xXX (?) 0xXX (?) 0xXX (?) 0xXX (?) 0xXX (?)
USB String Descriptor - Serial Number
Document #: 38-08030 Rev. *C
Page 26 of 34
PRELIMINARY
Table 4-2. EEPROM Organization (continued) I2C Address 0xF3 0xF4 0xF5 0xF6 0xF7 0xF8 0xF9 0xFA 0xFB 0xFC 0xFD 0xFE 0xFF bString bString bString bString bString bString bString bString bString bString bString bString bString Field Name Field Description Serial number byte #12 Serial number byte #13 Serial number byte #14 Serial number byte #15 Serial number byte #16 Serial number byte #17 Serial number byte #18 Serial number byte #19 Serial number byte #20 Serial number byte #21 Serial number byte #22 Serial number byte #23 Serial number byte #24
CY7C68310
Required I2C Data
Example I2C Data 0xXX (?) 0xXX (?) 0xXX (?) 0xXX (?) 0xXX (?) 0xXX (?) 0xXX (?) 0xXX (?) 0xXX (?) 0xXX (?) 0xXX (?) 0xXX (?) 0xXX (?)
4.3
Programming the EEPROM
Programming of the I2C memory device can be accomplished using an external device programmer, CY7C68310 supported vendor-specific USB commands, or using a bed of nails. Table 4-3 shows the format of the vendor-specific commands used to program the EEPROM. Any vendor-specific USB write request to the Serial ROM device configuration space will simultaneously update internal configuration register values as well. If the I2C device is programmed without vendor specific USB commands, CY7C68310 must be synchronously reset (nRESET) before configuration data is reloaded. Table 4-3. EEPROM-related Vendor-specific Question Label LOAD_CONFIG_DATA READ_CONFIG_DATA bmRequestType bRequest 0x40 0xC0 0x01 0x02 wValue wIndex wLength Data Configuration Data Configuration Data
Data Destination Starting Address Data Length Data Source Starting Address Data Length
The CY7C68310 supports a subset of the "slow mode" specification (100 KHz) required for 24LCXXB EEPROM family device support. Features such as "Multi-Master," "Clock Synchronization" (the SCL pin is output only), "10-bit addressing," and "CBUS device support" are not supported. Vendor-specific USB commands allow the CY7C68310 to address up to 2 Kbytes of data (although configuration/descriptor information is limited to 512 bytes of register space). 4.3.1 LOAD_CONFIG_DATA
This request enables configuration data writes to the data source specified by the wValue field. The wIndex field specifies the starting address and the wLength field denotes the data length in bytes. Legal values for wValue are as follows: * 0x0000 Configuration bytes, address range 0x2 - 0xF * 0x0002 External I2C memory device. Configuration byte writes must be constrained to addresses 0x2 through 0xF, as shown in Table 4-2. Attempts to write outside this address space will result in a STALL condition. Configuration byte writes only overwrite CY7C68310 Configuration Byte registers, the original data source remains unchanged (I2C-compatible memory device, FBh identify data, or internal ROM). Single byte writes to the I2C-compatible memory devices can start at any address. Writes greater then a single byte must only start on eight-byte boundaries, meaning that the address value must be evenly divisible by eight. Writes to I2C-compatible memory devices must not cross 256-byte page boundaries, i.e., start and finish write addresses must have equal modulo 256 values. Write operations with beginning and end addresses that do not fall in the same 256-byte page will result in a STALL condition. Illegal values for wValue as well as attempts to write to an I2C-compatible memory device when none is connected will result in a STALL condition.
Document #: 38-08030 Rev. *C
Page 27 of 34
PRELIMINARY
4.3.2 READ_CONFIG_DATA
CY7C68310
This USB request allows data retrieval from the data source specified by the wValue field. Data is retrieved beginning at the address specified by the wIndex field. The wLength field denotes the length in bytes of data requested from the data source. Legal values for wValue are as follows: * 0x0000 Configuration bytes, addresses 0x0 - 0xF only * 0x0001 Internal ROM * 0x0002 External I2C-compatible memory device * 0x0003 Vendor-specific identify (FBh) data. Illegal values for wValue will result in a STALL condition on the USB port. Attempted reads from an I2C-compatible memory device when none is connected or attempted reads from FBh data when not in IMODE will result in a STALL condition. Attempts to read configuration bytes with starting addresses greater than 0xF will also result in a STALL condition.
5.0
5.1
Timing Characteristics
I2C-compatible Memory Device Interface Timing
Thigh Tlow
SCL
TSU:STA THD:STA THD:DAT TSU:DAT TSU:STO
SDA OUT
TBUF TDSU
SDA IN
I2C-compatible Device Parameter Clock high time Clock low time Start condition hold time Start condition setup time Data output hold time Data output setup time Stop condition setup time Required data valid before clock Min time bus must be free before next transmission Figure 5-1. I2C Interface Timing
Symbol Thigh Tlow THD:STA TSU:STA THD:DAT TSU:DAT TSU:STO TDSU TBUF
Value 5066 ns 5066 ns 5066 ns 5066 ns 5066 ns 5066 ns 5066 ns 500 ns 5066 ns
5.2
USB Interface Timing
The CY7C68310 transceiver complies to the timing characteristics as stated in the USB Specification version 2.0. The CY7C68310 can operate at either the high-speed or full-speed signalling rate.
5.3
ATA/ATAPI Interface Timing
The ATA interface supports ATA PIO modes 0 to 4, and Ultra DMA modes 0 to 4, per the ATA Attachment - 6 with Packet Interface revision 3b. All input signals on the ATA/ATAPI port are considered asynchronous and are synchronized to the chip's internal system clock. All output signals are clocked using the chip's internal system clock, for which there is no external reference. Thus, the output signals should also be considered asynchronous. The PIO mode used for data register accesses is retrieved from the device or specified in the CY7C68310 configuration bytes.
Document #: 38-08030 Rev. *C
Page 28 of 34
PRELIMINARY
5.4 External Clock Source Timing
CY7C68310
The CY7C68310 derives its internal system clock from an external clock source. The external clock input signal frequency is measured at 1/2 of the 2.5V power source (VDD25). The CY7C68310 internal PLL can be clocked using either a 30-MHz (0.005%) fundamental-mode crystal or a 2.5V, 50% duty-cycle square wave. The recommended external clock source for the CY7C68310 is the PRE XH30PRF10BL crystal (10-pF load capacitance).
5.5
Reset Timing
The CY7C68310 requires an off-chip power-on reset circuit. nRESET must be held asserted for a minimum of 1 ms after power is stable to cause a chip reset.
6.0
External Circuitry Requirements
Certain external components are required for proper CY7C68310 operation. The following figure details the minimum required circuitry for normal operation. Additional components may be required to support configurable CY7C68310 features, if utilized.
3.3V 3.3V
RPU 1.5K SDA SCL RREF DP RSDP 39 DM SCANEN TMC[1:2] RSDM XO VBUSPWRVLD 62K 30MHz 100 39 39K VBUS 0.1F DD+
1.5K
1.5K
CY7C68310
2.4K (1%)
AVSS
XI 9pF
9pF
Figure 6-1. External Circuitry Requirements
6.1
ATA Interface Termination
Design practices as outlined in the ATA/ATAPI-6 specification for signal integrity should be followed with systems that utilize a ribbon cable interconnect between the CY7C68310's ATA interface and the attached ATA/ATAPI device, especially if Ultra DMA Mode is utilized.
6.2
Power Supply Regulation
At no time should the 3.3V power rail drop below the 2.5V rail for proper device operation. Care should be taken to ensure that the power rails rise and fall without allowing the 3.3V supply to drop below the 2.5V supply. The recommended method is to cascade voltage regulating circuits such that the 2.5V supply is powered from the 3.3V supply.
6.3
Pull-ups/Pull-downs on Three-stated Pins
Certain output pins act as open-drain and remain three-stated unless asserting a `0.' These pins include SCL, SDA, LOWPWR, and nPWR500. If their functionality is utilized, these pins must be tied to pull-up resistors to avoid floating while three-stated. These pins can be left as no-connects if the functionality is not utilized.
7.0
Manufacturing Interconnect Test Support
Manufacturing Test Mode is provided as a means to implement board- and system-level interconnect tests. During Manufacturing Test Mode operation, all outputs not associated directly with USB operation are controllable. Normal state machine and register control of output pins are disabled. Two vendor-specific USB requests (LOAD_MFG_DATA and READ_MFG_DATA) are used in Manufacturing Test Mode operation.
Document #: 38-08030 Rev. *C
Page 29 of 34
PRELIMINARY
7.1 LOAD_MFG_DATA
CY7C68310
This USB request is used to enable and control Manufacturing Test Mode operation. While in Manufacturing Test Mode, individual pins may be asserted or deasserted depending upon the contents of the data field. The DD and GPIO pins may also be threestated in preparation for READ_MFG_DATA command operations. Control of the select CY7C68310 I/O pins and their threestate controls are mapped to the USB data packet associated with this request. Table 7-1. LOAD_MFG_DATA Command Format Label LOAD_MFG_DATA bmRequestType 0x40 bRequest 0x05 wValue Disable/Enable wIndex Starting Address wLength Data Length Data Mfg. Test Data
Legal values for wValue are as follows: * 0x0000 Normal operation mode - returns CY7C68310 to normal operation regardless of previous command data sets (power-on reset default). * 0x0001 Manufacturing Test Mode - manufacturing test registers control specific CY7C68310 outputs cells to enable board level testing in the manufacturing environment. Legal values for wLength are as follows: * 0x0000 Valid only when wValue = 0x0000; when disabling Manufacturing Test Mode of operation. * 0x0007 Valid only when wValue = 0x0001. For proper Manufacturing Test Mode operation, wLength must equal 0x0007. Any data packet lengths greater than 7 will result in a STALL condition. Table 7-2. Bit-wise Mapping of LOAD_MFG_DATA Test Data Byte 0 0 0 0 0 0 0 0 1 1 1 1 1 2 3 4 4 4 4 5 0 1 2 3 4 5 6 7 0 2:1 5:3 6 7 7:0 7:0 2:0 3 6:4 7 7:0 Bit(s) LOWPWR Reserved - Value will not affect output nPWR500 nATARST nDIOW nDIOR nDMACK ATAPUEN Reserved - Value will not affect output nCS[1:0] DA[2:0] SCL DD_EN - `1' = Enable output (set for writes), `0' = three-state DD[15:0] (set for reads) DD[7:0] DD[15:8] GPIO[2:0] Reserved - Value will not affect output GPIO_EN[2:0] - `1' = Enable output (set for writes), `1' = three-state GPIO[2:0] (set for reads) Reserved - Value will not affect output Reserved - Value will not affect output Test/Three-state Control Register Name
7.2
READ_MFG_DATA
This USB request returns a "snapshot in time" of selected input pins. The input pin states are bit-wise mapped to the USB data packed associated with this request. CY7C68310 input pins not associated directly with USB operation can be sampled at any time during normal or Manufacturing Test Mode operation. This request is independent of normal CY7C68310 state machine control or Manufacturing Test Mode write operations. Table 7-3. READ_MFG_DATA Command Format Label READ_MFG_DATA bmRequestType 0xC0 bRequest 0x06 wValue 0x00 wIndex 0x00 wLength Data Length Data Mfg. Test Data
Document #: 38-08030 Rev. *C
Page 30 of 34
PRELIMINARY
Legal values for wValue are as follows: * 0x0000 wValue must be set to 0x0000. Legal values for wLength are as follows: * 0x0001-0x0008 Any wLength value greater than 0x0008 will result in a STALL response. Table 7-4. Bit-wise Mapping of READ_MFG_Data Test Data Byte 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 2 2 2 2 2 3 4 5 5 5 5 6 6 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 4:3 7:5 7:0 7:0 2:0 3 4 7:5 0 1 2:7 7:0 Bit(s) DRVPWRVLD VBUSPWRVLD VBUSPWRD DISKRDY SYSIRQ IORDY DMARQ nEJECT ATAIRQ Will always return `1' LOWPWR Reserved - Disregard value nPWR500 nATARST nDIOW nDIOR nDMACK ATAPUEN Reserved - Disregard value nCS[1:0] DA[2:0] DD[7:0] DD[15:8] GPIO[2:0] Will always return `0' DD_EN GPIO_EN[2:0] MFG_SEL (manufacturing test mode enable) ATAEN Will always return `1' Will always return `1' Pin Name
CY7C68310
8.0
Absolute Maximum Ratings
Storage Temperature ............................................................................................................................................... -65 to 150 C Ambient Temperature with power supplied .................................................................................................................... 0 to 70 C Supply Voltage to Ground Potential ...........................................................................................................................-0.5 to 5.5 V DC Input Voltage to Any Input Pin .............................................................................................................................-0.5 to 5.5 V DC Voltage Applied to Outputs in three-state ............................................................................................................-0.5 to 5.5 V Power Dissipation ............................................................................................................................................................TBD mW Static Discharge Voltage ...................................................................................................................................................> 2000V Max Output Current per I/O port ..........................................................................................................................................20 mA Latch-up Current .............................................................................................................................................................> 200 mA Document #: 38-08030 Rev. *C Page 31 of 34
PRELIMINARY
9.0 Operating Conditions
CY7C68310
Operating temperature.................................................................................................................................................... 0 to 70C
10.0
VDD VDDA VDDIO VIH VIL VOH VOL IOH IOL InCFG ICC ISUP
DC Characteristics
Description Digital voltage supply Analog voltage supply I/O cell voltage supply Input high voltage Input low voltage Output high voltage at IOH Output low voltage at IOL Source current at VOH Sink current at VOL Unconfigured current Current in normal operation Current in USB suspend Full-speed High-speed Full-speed High-speed 6 6 40 60 65 85 TBD A mA Min. 2.25 2.25 3.0 2.0 -0.5 2.4 0.4 Typ. 2.50 2.50 3.3 Max. 2.75 2.75 3.6 VDDIO + 0.5 0.8 Unit V V V V V V V mA mA mA
Parameter
11.0
Ordering Information
Package Type 80-lead TQFP CY7C68310 Mass Storage Reference Design Kit
Part Number CY7C68310-80AC CY4617
12.0
PCB Layout Recommendations
The CY7C68310 contains high-speed analog circuitry that is sensitive to system noise. In particular, noise on both analog and digital power supplies must be minimized to ensure reliable, high-performance operation. Special attention should also be given to the design of the frequency generation, voltage reference, and USB interface circuits. Cypress recommends using the following guidelines in designing any product that uses the CY7C68310. * The 3.3V power rail must remain above the 2.5V rail at all times for proper device operation. * DP and DM trace lengths should be kept to within 2 mm of each other and must not exceed 37 mm in total length, with a preferred length of 20-30 mm. * Maintain a solid ground plane under the DP and DM traces. Do not allow the plane to be split under these traces. * Do not place vias on the DP or DM traces. * Isolate the DP and DM traces from all other signal traces by no less than 10 mm. * The DP and DM common mode trace impedance should be controlled to 45 with total differential impedance controlled to 90 (10%). * The VDD power plane should be as solid as possible with direct paths from the voltage regulator to all discrete components. A four layer board is required with inner layers dedicated to power and ground planes. Digital ground should cover one entire layer of the design. * Analog and digital power planes must be isolated using inductors. * Ceramic or tantalum capacitors are required. Do not use electrolytic capacitors. Electrolytic capacitors have higher lead inductance and series resistance values that have been observed to contribute to increased power supply noise. * Adequate bypass capacitance must be implemented very near to the CY7C68310 power pins. One ceramic bypass capacitor per power/ground pair is recommended. * All termination and pull-up resistors (including DP and DM) should be placed within 5 mm of the CY7C68310 pins. * The crystal and RREF external resistor components should be placed as near the CY7C68310 pins as possible.
Document #: 38-08030 Rev. *C
Page 32 of 34
PRELIMINARY
13.0 Package Diagram
80-lead Thin Plastic Quad Flat Pack (12 x 12 x 1.0 mm) A8012x12
CY7C68310
51-85175-**
Figure 13-1. 80-pin TQFP Package Diagram I as defined by Philips. ISD-300LP is a trademark of Cypress Semiconductor. All product and company names mentioned in this document are the trademarks of their respective holders. Purchase of I2C components from Cypress, or one of its sublicensed Associated Companies, conveys a license under the Philips 2C Patent Rights to use these components in an I2C system, provided that the system conforms to the I2C Standard Specification
Document #: 38-08030 Rev. *C
Page 33 of 34
(c) Cypress Semiconductor Corporation, 2003. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges.
PRELIMINARY
Document History Page
Description Title: CY7C68310 ISD-300LPTM Low-Power USB 2.0 to ATA/ATAPI Bridge IC Document Number: 38-08030 REV. ** *A *B *C ECN No. 118297 120307 123509 126049 Issue Date 09/18/02 12/12/02 04/04/03 04/07/03 Orig. of Change BHA GIR GIR CVR New Data Sheet Revised for Preliminary Status Revised to include first silicon information Post to External Website CY7C68310-80AC Description of Change
CY7C68310
Document #: 38-08030 Rev. *C
Page 34 of 34

▲Up To Search▲

Price & Availability of CY7C68310-80AC

	To Download CY7C68310-80AC Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .