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| DSP56854/D Rev. 1.0 1/2002 DSP56854 Preliminary Technical Data DSP56854 16-bit Digital Signal Processor * 120 MIPS at 120MHz * 16K x 16-bit Program SRAM * 16K x 16-bit Data SRAM * 1K x 16-bit Boot ROM * Access up to 2M words of program or 8M data memory * Chip Select Logic for glue-less interface to ROM and SRAM * Six (6) independent channels of DMA * Enhanced Synchronous Serial Interfaces (ESSI) * Two (2) Serial Communication Interfaces (SCI) 6 * Serial Port Interface (SPI) * 8-bit Parallel Host Interface * General Purpose 16-bit Quad Timer * JTAG/Enhanced On-Chip Emulation (OnCETM) for unobtrusive, real-time debugging * Computer Operating Properly (COP)/Watchdog Timer * Time-of-Day (TOD) * 128 LQFP package * Up to 41 GPIO VDDIO 11 VDD 6 VSSIO 10 VSS VDDA 6 VSSA JTAG/ Enhanced OnCE Program Controller and Hardware Looping Unit Address Generation Unit 16-Bit DSP56800E Core Data ALU 16 x 16 + 36 36-Bit MAC Three 16-bit Input Registers Four 36-bit Accumulators Bit Manipulation Unit PAB PDB CDBR CDBW Memory XDB2 Program Memory 16,384 x 16 SRAM Boot ROM 1024 x 16 ROM Data Memory 16,384 x 16 SRAM XAB1 XAB2 PAB PDB CDBR CDBW IPBus Bridge (IPBB) IPWDB IPRDB IPAB Decoding Peripherals A0-20 [20:0] D0-D15 [15:0] RD Enable WR Enable CS0-CS3[3:0] or GPIOA0-GPIOA3[3:0] 4 6 Bus Control External Address Bus Switch External Data Bus Switch External Bus Interface Unit DMA Requests Core CLK POR 3 System Bus Control DMA 6 channel IPBus CLK CLKO MODEA-C or (GPIOH0-H2) System COP/TOD CLK Integration Module RSTO RESET EXTAL XTAL 2 SCI ESSI0 or or GPIOE GPIOC Quad Timer or GPIOG 4 SPI Host Interrupt or Interface Controller GPIOF or GPIOB 4 16 IRQA IRQB COP/ Watchdog Time of Day Clock Generator OSC PLL Figure 1. DSP56854 Block Diagram (c) Motorola, Inc., 2002. All rights reserved. Part 1 Overview 1.1 DSP56854 Features 1.1.1 * * * * * * * * * * * * * * * * Digital Signal Processing Core Efficient 16-bit DSP engine with dual Harvard architecture 120 Million Instructions Per Second (MIPS) at 120MHz core frequency Single-cycle 16 x 16-bit parallel Multiplier-Accumulator (MAC) Four (4) 36-bit accumulators including extension bits 16-bit bidirectional shifter Parallel instruction set with unique DSP addressing modes Hardware DO and REP loops Three (3) internal address buses and one (1) external address bus Four (4) internal data buses and one (1) external data bus Instruction set supports both DSP and controller functions Four (4) hardware interrupt levels Five (5) software interrupt levels Controller-style addressing modes and instructions for compact code Efficient C Compiler and local variable support Software subroutine and interrupt stack with depth limited only by memory JTAG/Enhanced OnCE debug programming interface 1.1.2 * * Memory Harvard architecture permits up to three (3) simultaneous accesses to program and data memory On-Chip Memory -- 16K x 16-bit Program SRAM -- 16K x 16-bit Data SRAM -- 1K x 16-bit Boot ROM * Off-Chip Memory Expansion (EMI) -- Access up to 2M words of program memory or up to 8M words of data memory -- Chip Select Logic for glue-less interface to ROM and SRAM 1.1.3 * * * * * Peripheral Circuits for DSP56854 General Purpose 16-bit Quad Timer* Two (2) Serial Communication Interfaces (SCI)* Serial Peripheral Interface (SPI) Port* Enhanced Synchronous Serial Interface (ESSI) module* Computer Operating Properly (COP)/Watchdog Timer 2 DSP56854 Preliminary Technical Data MOTOROLA DSP56854 Description * * * * * JTAG/Enhanced On-Chip Emulation (EOnCE) for unobtrusive, real-time debugging Six (6) independent channels of DMA 8-bit Parallel Host Interface* Time of Day Up to 41 GPIO * Each peripheral I/O can be used alternately as a General Purpose I/O if not needed 1.1.4 * * Energy Information Fabricated in high-density CMOS with 3.3V, TTL-compatible digital inputs Wait and Stop modes available 1.2 DSP56854 Description The DSP56854 is a member of the DSP56800E core-based family of Digital Signal Processors (DSPs). It combines, on a single chip, the processing power of a DSP and the functionality of a microcontroller with a flexible set of peripherals to create an extremely cost-effective solution. Because of its low cost, configuration flexibility, and compact program code, the DSP56854 is well-suited for many applications. The DSP56854 includes many peripherals that are especially useful for low-end Internet appliance applications and low-end client applications such as telephony; portable devices; Internet audio; and pointof-sale systems, such as noise suppression; ID tag readers; sonic/subsonic detectors; security access devices; remote metering; sonic alarms. The Product Family core is based on a Harvard-style architecture consisting of three execution units operating in parallel, allowing as many as six operations per instruction cycle. The microprocessor-style programming model and optimized instruction set allow straightforward generation of efficient, compact code for both DSP and MCU applications. The instruction set is also highly efficient for C Compilers, enabling rapid development of optimized control applications. The DSP56854 supports program execution from either internal or external memories. Two data operands can be accessed from the on-chip Data RAM per instruction cycle. The DSP56854 also provides two external dedicated interrupt lines, and up to 41 General Purpose Input/Output (GPIO) lines, depending on peripheral configuration. The DSP56854 DSP controller includes 16K words of Program RAM, 16K words of Data RAM, and 1K words of Boot ROM. It also supports program execution from external memory. This DSP controller also provides a full set of standard programmable peripherals that include an 8-bit parallel Host Interface, Enhanced Synchronous Serial Interface (ESSI), one Serial Peripheral Interface (SPI), two Serial Communications Interfaces (SCIs), and a Quad Timer. The Host Interface, ESSI, SPI, SCI, four chip selects and quad timer can be used as General Purpose Input/Outputs (GPIOs) if its primary function is not required. 1.3 "Best in Class" Development Environment The SDK (Software Development Kit) provides fully-debugged peripheral drivers, libraries and interfaces that allow a programmer to create his own unique C application code independent of component architecture. The CodeWarrior Integrated Development Environment is a sophisticated tool for code navigation, compiling, and debugging. A complete set of evaluation modules (EVMs) and development system cards will support concurrent engineering. Together, the SDK, CodeWarrior, and EVMs create a complete, scalable tools solution for easy, fast and efficient development. MOTOROLA DSP56854 Preliminary Technical Data 3 1.4 Product Documentation The four documents listed in Table 1 are required for a complete description of and proper design with the DSP56854. Documentation is available from local Motorola distributors, Motorola semiconductor sales offices, Motorola Literature Distribution Centers, or online at www.motorola.com/semiconductors/. Table 1. DSP56854 Chip Documentation Topic DSP56800E Reference Manual DSP56854 User's Manual DSP56854 Technical Data Sheet DSP56854 Product Brief Description Detailed description of the DSP56800E architecture, 16-bit DSP core processor and the instruction set Detailed description of memory, peripherals, and interfaces of the DSP56854 Electrical and timing specifications, pin descriptions, and package descriptions Summary description and block diagram of the DSP56854 core, memory, peripherals and interfaces (this document) Order Number DSP56800ERM/D DSP5685xUM/D DSP56854/D DSP56854PB/D 1.5 Data Sheet Conventions This data sheet uses the following conventions: OVERBAR This is used to indicate a signal that is active when pulled low. For example, the RESET pin is active when low. A high true (active high) signal is high or a low true (active low) signal is low. A high true (active high) signal is low or a low true (active low) signal is high. Signal/Symbol PIN PIN PIN PIN 1. Logic State True False True False Signal State Asserted Deasserted Asserted Deasserted Voltage1 VIL/VOL VIH/VOH VIH/VOH VIL/VOL "asserted" "deasserted" Examples: Values for VIL, VOL, VIH, and VOH are defined by individual product specifications. 4 DSP56854 Preliminary Technical Data MOTOROLA Introduction Part 2 Signal/Connection Descriptions 2.1 Introduction The input and output signals of the DSP56854 are organized into functional groups, as shown in Table 2 and as illustrated in Figure 2. In Table 3 each table row describes the package pin and the signal or signals present. Table 2. Functional Group Pin Allocations Functional Group Power (VDD, VDDIO, or VDDA) Ground (VSS, VSSIO,or VSSA) PLL and Clock External Bus Signals External Chip Select* Interrupt and Program Control Host Interface (HI)* Enhanced Synchronous Serial Interface (ESSI0) Port* Serial Communications Interface (SCI0) Ports* Serial Communications Interface (SCI1) Ports* Serial Peripheral Interface (SPI) Port* Quad Timer Module Port* JTAG/Enhanced On-Chip Emulation (EOnCE) *Alternately, GPIO pins Number of Pins (6, 11, 1)1 (6, 10, 1)1 3 39 4 72 163 6 2 2 4 4 6 1. VDD = VDD CORE, VSS = VSS CORE, VDDIO= VDD IO, VSSIO = VSS IO, VDDA = VDD ANA, VSSA = VSS ANA 2. MODA, MODB and MODC can be used as GPIO after the bootstrap process has completed. 3. The following Host Interface signals are multiplexed: HRWB to HRD, HDS to HWR, HREQ to HTRQ and HACK to HRRQ. MOTOROLA DSP56854 Preliminary Technical Data 5 Logic Power VDD VSS 1 6 6 1 RXDO (GPIOE0) TXDO (GPIOE1) SCI 0 1 I/O Power Analog Power1 VDDIO VSSIO VDDA VSSA 11 10 1 1 1 1 1 1 1 A0 - A20 D0 - D15 External Bus RD WR 1 RXD1 (GPIOE2) TXD1 (GPIOE3) SCI 2 STD0 (GPIOC0) SRD0 (GPIOC1) SCK0 (GPIOC2) SC00 (GPIOC3) SC01 (GPIOC4) SC02 (GPIOC5) ESSI 0 DSP56854 21 16 1 1 1 Chip Select CS0 - CS3 (GPIOA0 - A3) 4 HD0 - HD7 (GPIOB0 - B7) HA0 - HA2 (GPIOB8 - B10) HRWB (HRD) (GPIOB11) Host Interface HDS (HWR) (GPIOB12) HCS (GPIOB13) HREQ (HTRQ) (GPIOB14) HACK (HRRQ) (GPIOB15) 8 3 1 1 1 1 1 1 1 4 1 1 1 1 1 MISO (GPIOF0) MOSI (GPIOF1) SCK (GPIOF2) SS (GPIOF3) SPI XTAL EXTAL CLKO PLL/Clock Timer Module TIO0 - TIO3 (GPIOG0 - G3) IRQA IRQB Interrupt/ Program Control MODA, MODB, MODC (GPIOH0 - H2) RESET RSTO 1 1 3 1 1 1 1 1 1 1 1 TCK TDI TDO TMS TRST DE JTAG / Enhanced OnCE Figure 2. DSP56854 Signals Identified by Functional Group2 1. Specifically for PLL, OSC, and POR. 2. Alternate pin functions are shown in parentheses. 6 DSP56854 Preliminary Technical Data MOTOROLA Introduction Part 3 Signals and Package Information All digital inputs have a weak internal pull-up circuit associated with them. These pull-up circuits are enabled by default. Exceptions: 1. When a pin has GPIO functionality, the pull-up may be disabled under software control. 2. MODE A, MODE B and MODE C pins have no pull-up. 3. TCK has a weak pull-down circuit always active. 4. Bidirectional I/O pullups automatically disable when the output is enabled. This table is presented consistently with the Signals Identified by Functional Group figure. 1. BOLD entries in the Type column represents the state of the pin just out of reset. 2. Ouput(Z) means an output in a High-Z condition. Table 3. DSP56854 Signal and Package Information for the 128-pin LQFP Pin No. 13 47 64 79 80 112 14 48 63 81 96 113 Signal Name VDD VDD VDD VDD VDD VDD VSS VSS VSS VSS VSS VSS Type VDD Description Power (VDD)--These pins provide power to the internal structures of the chip, and should all be attached to VDD. VSS Ground (VSS)--These pins provide grounding for the internal structures of the chip and should all be attached to VSS. MOTOROLA DSP56854 Preliminary Technical Data 7 Table 3. DSP56854 Signal and Package Information for the 128-pin LQFP Pin No. 5 18 41 55 61 72 91 92 100 114 124 6 19 42 56 62 74 93 102 115 125 22 Signal Name VDDIO VDDIO VDDIO VDDIO VDDIO VDDIO VDDIO VDDIO VDDIO VDDIO VDDIO VSSIO VSSIO VSSIO VSSIO VSSIO VSSIO VSSIO VSSIO VSSIO VSSIO VDDA Type VDDIO Description Power (VDDIO)--These pins provide power for all I/O and ESD structures of the chip, and should all be attached to VDDIO (3.3V). VSSIO Ground (VSSIO)--These pins provide grounding for all I/O and ESD structures of the chip and should all be attached to VSS. VDDA Analog Power (VDDA)--These pins supply an analog power source. Analog Ground (VSSA)--This pin supplies an analog ground. 23 VSSA VSSA 8 DSP56854 Preliminary Technical Data MOTOROLA Introduction Table 3. DSP56854 Signal and Package Information for the 128-pin LQFP Pin No. 9 10 11 12 26 27 28 29 43 44 45 46 57 58 59 60 67 68 69 70 71 Signal Name A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 Type Output(Z) Description Address Bus (A0-A20)--These signals specify a word address for external program or data memory access. MOTOROLA DSP56854 Preliminary Technical Data 9 Table 3. DSP56854 Signal and Package Information for the 128-pin LQFP Pin No. 73 86 87 88 89 90 107 108 109 110 111 122 123 126 127 128 7 Signal Name D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 RD Type Input/Output(Z) Description Data Bus (D0-D15)--These pins provide the bidirectional data for external program or data memory accesses. Output Read Enable (RD) --is asserted during external memory read cycles. This signal is pulled high during reset. 8 WR Output Write Enable (WR)-- is asserted during external memory write cycles. This signal is pulled high during reset. 75 CS0 Output External Chip Select (CS0)--This pin is used as a dedicated GPIO. Port A GPIO (0) --This pin is a General Purpose I/O (GPIO) pin when not configured for host port usage. External Chip Select (CS1)--This pin is used as a dedicated GPIO. Port A GPIO (1) --This pin is a General Purpose I/O (GPIO) pin when not configured for host port usage. GPIOA0 Input/Output 76 CS1 Output GPIOA1 Input/Output 10 DSP56854 Preliminary Technical Data MOTOROLA Introduction Table 3. DSP56854 Signal and Package Information for the 128-pin LQFP Pin No. 77 Signal Name CS2 Type Output Description External Chip Select (CS2)--This pin is used as a dedicated GPIO. Port A GPIO (2) --This pin is a General Purpose I/O (GPIO) pin when not configured for host port usage. External Chip Select (CS3)--This pin is used as a dedicated GPIO. Port A GPIO (3)--This pin is a General Purpose I/O (GPIO) pin when not configured for host port usage. Host Address (HD0)--This input provides data selection for HI registers. This pin is disconnected internally during reset. GPIOA2 Input/Output 78 CS3 Output GPIOA3 Input/Output 30 HD0 Input GPIOB0 Input/Output Port B GPIO (0)--This pin is a General Purpose I/O (GPIO) pin when not configured for host port usage. Host Address (HD1)--This input provides data selection for HI registers. This pin is disconnected internally during reset. 31 HD1 Input GPIOB1 Input/Output Port B GPIO (1)--This pin is a General Purpose I/O (GPIO) pin when not configured for host port usage. Host Address (HD2)--This input provides data selection for HI registers. This pin is disconnected internally during reset. 32 HD2 Input GPIOB2 Input/Output Port B GPIO (2)--This pin is a General Purpose I/O (GPIO) pin when not configured for host port usage. Host Address (HD3)--This input provides data selection for HI registers. This pin is disconnected internally during reset. 36 HD3 Input GPIOB3 Input/Output Port B GPIO (3)--This pin is a General Purpose I/O (GPIO) pin when not configured for host port usage. Host Address (HD4)--This input provides data selection for HI registers. This pin is disconnected internally during reset. 37 HD4 Input GPIOB4 Input/Output Port B GPIO (4)--This pin is a General Purpose I/O (GPIO) pin when not configured for host port usage. MOTOROLA DSP56854 Preliminary Technical Data 11 Table 3. DSP56854 Signal and Package Information for the 128-pin LQFP Pin No. 38 Signal Name HD5 Type Input Description Host Address (HD5)--This input provides data selection for HI registers. This pin is disconnected internally during reset. GPIOB5 Input/Output Port B GPIO (5)--This pin is a General Purpose I/O (GPIO) pin when not configured for host port usage. Host Address (HD6)--This input provides data selection for HI registers. This pin is disconnected internally during reset. 39 HD6 Input GPIOB6 Input/Output Port B GPIO (6)--This pin is a General Purpose I/O (GPIO) pin when not configured for host port usage. Host Address (HD7)--This input provides data selection for HI registers. This pin is disconnected internally during reset. 40 HD7 Input GPIOB7 Input/Output Port B GPIO (7)--This pin is a General Purpose I/O (GPIO) pin when not configured for host port usage. Host Address (HA0)--These inputs provide the address selection for HI registers. These pins are disconnected internally during reset. 82 HA0 Input GPIOB8 Input/Output Port B GPIO (8)--These pins are General Purpose I/O (GPIO) pins when not configured for host port usage. Host Address (HA0)--These inputs provide the address selection for HI registers. These pins are disconnected internally during reset. 83 HA1 Input GPIOB9 Input/Output Port B GPIO (9)--These pins are General Purpose I/O (GPIO) pins when not configured for host port usage. Host Address (HA0)--These inputs provide the address selection for HI registers. These pins are disconnected internally during reset. 84 HA2 Input GPIOB10 Input/Output Port B GPIO (10)--These pins are General Purpose I/O (GPIO) pins when not configured for host port usage. 12 DSP56854 Preliminary Technical Data MOTOROLA Introduction Table 3. DSP56854 Signal and Package Information for the 128-pin LQFP Pin No. 85 Signal Name HRWB Type Input Description Host Read/Write (HRWB)--When the HI08 is programmed to interface to a single-data-strobe host bus and the HI function is selected, this signal is the Read/Write input. These pins are disconnected internally. HRD Input Host Read Data (HRD)--This signal is the Read Data input when the HI08 is programmed to interface to a double-datastrobe host bus and the HI function is selected. Port B GPIO (11)--This pin is a General Purpose I/O (GPIO) pin when not configured for host port usage. Host Data Strobe (HDS)--When the HI08 is programmed to interface to a single-data-strobe host bus and the HI function is selected, this input enables a data transfer on the HI when HCS is asserted. These pins are disconnected internally. GPIOB11 Input/Output 103 HDS Input HWR Input Host Write Enable (HWR)--This signal is the Write Data input when the HI08 is programmed to interface to a doubledata-strobe host bus and the HI function is selected. Port B GPIO (12)--This pin is a General Purpose I/O (GPIO) pin when not configured for host port usage. Host Chip Select (HCS)--This input is the chip select input for the Host Interface. These pins are disconnected internally. GPIOB12 Input/Outpu0 104 HCS Input GPIOB13 Input/Output Port B GPIO (13)--This pin is a General Purpose I/O (GPIO) pin when not configured for host port usage. Host Request (HREQ)--When the HI08 is programmed for HRMS=0 functionality (typically used on a single-datastrobe bus), this open drain output is used by the HI to request service from the host processor. The HREQ may be connected to an interrupt request pin of a host processor, a transfer request of a DMA controller, or a control input of external circuitry. These pins are disconnected internally. 105 HREQ Open Drain Output HTRQ Open Drain Output Transmit Host Request (HTRQ)--This signal is the Transmit Host Request output when the HI08 is programmed for HRMS=1 functionality and is typically used on a double-data-strobe bus. Port B GPIO (14)--This pin is a General Purpose I/O (GPIO) pin when not configured for host port usage. GPIOB14 Input/Output MOTOROLA DSP56854 Preliminary Technical Data 13 Table 3. DSP56854 Signal and Package Information for the 128-pin LQFP Pin No. 106 Signal Name HACK Type Input Description Host Acknowledge (HACK)--When the HI08 is programmed for HRMS=0 functionality (typically used on a single-data-strobe bus), this input has two functions: (1) provide a Host Acknowledge signal for DMA transfers or (2) to control handshaking and provide a Host Interrupt Acknowledge compatible with the MC68000 family processors. These pins are disconnected internally. HRRQ Open Drain Output Receive Host Request (HRRQ)--This signal is the Receive Host Request output when the HI08 is programmed for HRMS=1 functionality and is typically used on a double-data-strobe bus. Port B GPIO(15)--This pin is a General Purpose I/O (GPIO) pin when not configured for host port usage. Timer Input/Outputs (TIO0)--This pin can be independently configured to be either a timer input source or an output flag. Port G GPIOG0--This pin is a General Purpose I/O (GPIO) pin that can individually be programmed as an input or output pin. Timer Input/Outputs (TIO1)--This pin can be independently configured to be either a timer input source or an output flag. Port G GPIO (1)--This pin is a General Purpose I/O (GPIO) pin that can individually be programmed as an input or output pin. Timer Input/Outputs (TIO2)--This pin can be independently configured to be either a timer input source or an output flag. Port G GPIO (2)--This pin is a General Purpose I/O (GPIO) pin that can individually be programmed as an input or output pin. Timer Input/Outputs (TIO3)--This pin can be independently configured to be either a timer input source or an output flag. Port G GPIO (3)--This pin is a General Purpose I/O (GPIO) pin that can individually be programmed as an input or output pin. GPIOB15 Input/Output 101 TIO0 Input/Output GPIOG0 Input/Output 99 TIO1 Input/Output GPIOG1 Input/Output 98 TIO2 Input/Output GPIOG2 Input/Output 97 TIO3 Input/Output GPIOG3 Input/Output 14 DSP56854 Preliminary Technical Data MOTOROLA Introduction Table 3. DSP56854 Signal and Package Information for the 128-pin LQFP Pin No. 20 21 Signal Name IRQA IRQB Type Input Description External Interrupt Request A and B--The IRQA and IRQB inputs are asynchronous external interrupt requests that indicate that an external device is requesting service. A Schmitt trigger input is used for noise immunity. They can be programmed to be level-sensitive or negative-edgetriggered. If level-sensitive triggering is selected, an external pull-up resistor is required for Wired-OR operation. Mode Select (MODA)--During the bootstrap process MODA selects one of the eight bootstrap modes. Port H GPIO (0)--This pin is a General Purpose I/O (GPIO) pin after the bootstrap process has completed. Mode Select (MODB)--During the bootstrap process MODB selects one of the eight bootstrap modes. Port H GPIO (1)--This pin is a General Purpose I/O (GPIO) pin after the bootstrap process has completed. Mode Select (MODC)--During the bootstrap process MODC selects one of the eight bootstrap modes. Port H GPIO (2)--This pin is a General Purpose I/O (GPIO) pin after the bootstrap process has completed. Reset (RESET)--This input is a direct hardware reset on the processor. When RESET is asserted low, the DSP is initialized and placed in the Reset state. A Schmitt trigger input is used for noise immunity. When the RESET pin is deasserted, the initial chip operating mode is latched from the MODA, MODB, and MODC pins. To ensure complete hardware reset, RESET and TRST should be asserted together. The only exception occurs in a debugging environment when a hardware DSP reset is required and it is necessary not to reset the JTAG/ Enhanced OnCE module. In this case, assert RESET, but do not assert TRST. 15 MODA Input GPIOH0 Input/Output 16 MODB Input GPIOH1 Input/Output 17 MODC Input GPIOH2 Input/Output 35 RESET Input 34 RSTO Output Reset Output (RSTO)--This output is asserted on any reset condition (external reset, low voltage, software or COP). Serial Receive Data 0 (RXD0)--This input receives byteoriented serial data and transfers it to the SCI 0 receive shift register. Port E GPIO (0)--This pin is a General Purpose I/O (GPIO) pin that can individually be programmed as input or output pin. 65 RXD0 Input GPIOE0 Input/Output MOTOROLA DSP56854 Preliminary Technical Data 15 Table 3. DSP56854 Signal and Package Information for the 128-pin LQFP Pin No. 66 Signal Name TXD0 Type Output(Z) Description Serial Transmit Data 0 (TXD0)--This signal transmits data from the SCI 0 transmit data register. Port E GPIO (1)--This pin is a General Purpose I/O (GPIO) pin that can individually be programmed as input or output pin. Serial Receive Data 1 (RXD1)--This input receives byteoriented serial data and transfers it to the SCI 1 receive shift register. Port E GPIO (2)--This pin is a General Purpose I/O (GPIO) pin that can individually be programmed as input or output pin. Serial Transmit Data 1 (TXD1)--This signal transmits data from the SCI 1 transmit data register. Port E GPIO (3)--This pin is a General Purpose I/O (GPIO) pin that can individually be programmed as input or output pin. ESSI Transmit Data (STD0)--This output pin transmits serial data from the ESSI Transmitter Shift Register. Port C GPIO (0)--This pin is a General Purpose I/O (GPIO) pin when the ESSI is not in use. ESSI Receive Data (SRD0)--This input pin receives serial data and transfers the data to the ESSI Receive Shift Register. Port C GPIO (1)--This pin is a General Purpose I/O (GPIO) pin when the ESSI is not in use. ESSI Serial Clock (SCK0)--This bidirectional pin provides the serial bit rate clock for the transmit section of the ESSI. The clock signal can be continuous or gated and can be used by both the transmitter and receiver in synchronous mode. Port C GPIO (2)--This pin is a General Purpose I/O (GPIO) pin when the ESSI is not in use. ESSI Serial Control Pin 0 (SC00)--The function of this pin is determined by the selection of either synchronous or asynchronous mode. For asynchronous mode, this pin will be used for the receive clock I/O. For synchronous mode, this pin is used either for transmitter1 output or for serial I/O flag 0. Port C GPIO (3)--This pin is a General Purpose I/O (GPIO) pin when the ESSI is not in use. GPIOE1 Input/Output 94 RXD1 Input GPIOE2 Input/Output 95 TXD1 Output(Z) GPIOE3 Input/Output 116 STD0 Output GPIOC0 Input/Output 117 SRD0 Input GPIOC1 Input/Output 118 SCK0 Input/Output GPIOC2 Input/Output 119 SC00 Input/Output GPIOC3 Input/Output 16 DSP56854 Preliminary Technical Data MOTOROLA Introduction Table 3. DSP56854 Signal and Package Information for the 128-pin LQFP Pin No. 120 Signal Name SC01 Type Input/Output Description ESSI Serial Control Pin 1 (SC01)--The function of this pin is determined by the selection of either synchronous or asynchronous mode. For asynchronous mode, this pin is the receiver frame sync I/O. For synchronous mode, this pin is used either for transmitter2 output or for serial I/O flag 1. Port C GPIO (4)--This pin is a General Purpose I/O (GPIO) pin when the ESSI is not in use. ESSI Serial Control Pin 2 (SC02)--This pin is used for frame sync I/O. SC02 is the frame sync for both the transmitter and receiver in synchronous mode and for the transmitter only in asynchronous mode. When configured as an output, this pin is the internally generated frame sync signal. When configured as an input, this pin receives an external frame sync signal for the transmitter (and the receiver in synchronous operation). Port C GPIO (5)--This pin is a General Purpose I/O (GPIO) pin when the ESSI is not in use. SPI Master In/Slave Out (MISO)--This serial data pin is an input to a master device and an output from a slave device. The MISO line of a slave device is placed in the highimpedance state if the slave device is not selected. The driver on this pin can be configured as an open-drain driver by the SPI's Wired-OR mode (WOM) bit when this pin is configured for SPI operation. Port F GPIO (0)--This pin is a General Purpose I/O (GPIO) pin that can be individually programmed as input or output pin. SPI Master Out/Slave In (MOSI)--This serial data pin is an output from a master device and an input to a slave device. The master device places data on the MOSI line a halfcycle before the clock edge that the slave device uses to latch the data. The driver on this pin can be configured as an open-drain driver by the SPI's WOM bit when this pin is configured for SPI operation. Port F GPIO (1)--This pin is a General Purpose I/O (GPIO) pin that can individually be programmed as input or output pin. GPIOC4 Input/Output 121 SC02 Input/Output GPIOC5 Input /Output 1 MISO Input/Output GPIOF0 Input/Output 2 MOSI Input/Output (Z) GPIOF1 Input/Output MOTOROLA DSP56854 Preliminary Technical Data 17 Table 3. DSP56854 Signal and Package Information for the 128-pin LQFP Pin No. 3 Signal Name SCK Type Input/Output Description SPI Serial Clock (SCK)--This bidirectional pin provides a serial bit rate clock for the SPI. This gated clock signal is an input to a slave device and is generated as an output by a master device. Slave devices ignore the SCK signal unless the SS pin is active low. In both master and slave SPI devices, data is shifted on one edge of the SCK signal and is sampled on the opposite edge, where data is stable. The driver on this pin can be configured as an open-drain driver by the SPI's WOM bit when this pin is configured for SPI operation. When using Wired-OR mode, the user must provide an external pull-up device. Port F GPIO (2)--This pin is a General Purpose I/O (GPIO) pin that can be individually programmed as input or output pin. SPI Slave Select (SS)--This input pin selects a slave device before a master device can exchange data with the slave device. SS must be low before data transactions and must stay low for the duration of the transaction. The SS line of the master must be held high. Port F GPIO (3)--This pin is a General Purpose I/O (GPIO) pin that can individually be programmed as input or output pin. Crystal Oscillator Output (XTAL)--This output connects the internal crystal oscillator output to an external crystal. If an external clock source other than a crystal oscillator is used, XTAL must be used as the input. External Crystal Oscillator Input (EXTAL)--This input should be connected to an external crystal. If an external clock source other than a crystal oscillator is used, EXTAL must be tied off. See Section 4.6.2 Clock Output (CLKO)--This pin outputs a buffered clock signal. When enabled, this signal is the system clock divided by four. Test Clock Input (TCK)--This input pin provides a gated clock to synchronize the test logic and to shift serial data to the JTAG/Enhanced OnCE port. The pin is connected internally to a pull-down resistor. Test Data Input (TDI)--This input pin provides a serial input data stream to the JTAG/Enhanced OnCE port. It is sampled on the rising edge of TCK and has an on-chip pullup resistor. Test Data Output (TDO)--This tri-statable output pin provides a serial output data stream from the JTAG/ Enhanced OnCE port. It is driven in the Shift-IR and ShiftDR controller states, and changes on the falling edge of TCK. GPIOF2 Input/Output 4 SS Input GPIOF3 Input/Output 24 XTAL Input/Output 25 EXTAL Input 33 CLKO Output 54 TCK Input 52 TDI Input 51 TDO Output (Z) 18 DSP56854 Preliminary Technical Data MOTOROLA Introduction Table 3. DSP56854 Signal and Package Information for the 128-pin LQFP Pin No. 53 Signal Name TMS Type Input Description Test Mode Select Input (TMS)--This input pin is used to sequence the JTAG TAP controller's state machine. It is sampled on the rising edge of TCK and has an on-chip pullup resistor. Test Reset (TRST)--As an input, a low signal on this pin provides a reset signal to the JTAG TAP controller. To ensure complete hardware reset, TRST should be asserted whenever RESET is asserted. The only exception occurs in a debugging environment, since the Enhanced OnCE/JTAG module is under the control of the debugger. In this case it is not necessary to assert TRST when asserting RESET . Outside of a debugging environment RESET should be permanently asserted by grounding the signal, thus disabling the Enhanced OnCE/JTAG module on the DSP. Debug Event (DE)--This is an open-drain, bidirectional, active low signal. As an input, it is a means of entering debug mode of operation from an external command controller. As an output, it is a means of acknowledging that the chip has entered debug mode. This pin is connected internally to a weak pull-up resistor. 50 TRST Input 49 DE Input/Output MOTOROLA DSP56854 Preliminary Technical Data 19 Part 4 Specifications 4.1 General Characteristics The DSP56854 is fabricated in high-density CMOS with 5-volt tolerant TTL-compatible digital inputs. The term "5-volt tolerant" refers to the capability of an I/O pin, built on a 3.3V compatible process technology, to withstand a voltage up to 5.5V without damaging the device. Many systems have a mixture of devices designed for 3.3V and 5V power supplies. In such systems, a bus may carry both 3.3V and 5Vcompatible I/O voltage levels (a standard 3.3V I/O is designed to receive a maximum voltage of 3.3V 10% during normal operation without causing damage). This 5V tolerant capability therefore offers the power savings of 3.3V I/O levels while being able to receive 5V levels without being damaged. Absolute maximum ratings given in Table 4 are stress ratings only, and functional operation at the maximum is not guaranteed. Stress beyond these ratings may affect device reliability or cause permanent damage to the device. The DSP56854 DC/AC electrical specifications are preliminary and are from design simulations. These specifications may not be fully tested or guaranteed at this early stage of the product life cycle. Finalized specifications will be published after complete characterization and device qualifications have been completed. CAUTION This device contains protective circuitry to guard against damage due to high static voltage or electrical fields. However, normal precautions are advised to avoid application of any voltages higher than maximum rated voltages to this high-impedance circuit. Reliability of operation is enhanced if unused inputs are tied to an appropriate voltage level. Table 4. Absolute Maximum Ratings Characteristic Supply voltage, core Supply voltage, IO Supply voltage, analog Digital input voltages Analog input voltages (XTAL, EXTAL) Current drain per pin excluding VDD, GND Junction temperature Storage temperature range 1. 2. VDD must not exceed VDDIO VDDIO and VDDA must not differ by more that 0.5V Symbol VDD1 VDDIO2 VDDIO VIN VINA I TJ TSTG 2 Min VSS - 0.3 VSSIO - 0.3 VSSA - 0.3 VSSIO - 0.3 VSSA - 0.3 -- -40 -55 Max VSS + 2.0 VSSIO + 4.0 VDDA + 4.0 VSSIO + 5.5 VDDA + 0.3 8 120 150 Unit V V V mA C C 20 DSP56854 Preliminary Technical Data MOTOROLA General Characteristics Table 5. Recommended Operating Conditions Characteristic Supply voltage for Logic Power Supply voltage for I/O Power Supply voltage for Analog Power Ambient operating temperature PLL clock frequency1 Operating Frequency2 Frequency of peripheral bus Frequency of external clock Frequency of oscillator Frequency of clock via XTAL Frequency of clock via EXTAL Symbol VDD VDDIO VDDA TA fpll fop fipb fclk fosc fxtal fextal Min 1.62 3.0 3.0 -40 -- -- -- -- 2 -- 2 Max 1.98 3.6 3.6 85 240 120 60 240 4 240 4 Unit V V V C MHz MHz MHz MHz MHz MHz MHz 1. Assumes clock source is direct clock to EXTAL or crystal oscillator running 2-4MHz. PLL must be enabled, locked, and selected. The actual frequency depends on the source clock frequency and programming of the CGM module. 2. Master clock is derived from on of the following four sources: fclk = fxtal when the source clock is the direct clock to EXTAL fclk = fpll when PLL is selected fclk = fosc when the source clock is the crystal oscillator and PLL is not selected fclk = fextal when the source clock is the direct clock to EXTAL and PLL is not selected Table 6. Thermal Characteristics1 128-pin LQFP Characteristic Symbol Thermal resistance junction-to-ambient (estimated) I/O pin power dissipation Power dissipation Maximum allowed PD 1. See Section 6.1 for more detail. JA PI/O PD PDMAX Value 43.1 User Determined PD = (IDD x VDD) + PI/O (TJ - TA) / JA Unit C/W W W xC MOTOROLA DSP56854 Preliminary Technical Data 21 4.2 DC Electrical Characteristics Table 7. DC Electrical Characteristics Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0-3.6V, TA = -40 to +120C, CL 50pF, fop = 120MHz Characteristic Input high voltage (XTAL/EXTAL) Input low voltage (XTAL/EXTAL) Input high voltage Input low voltage Input current low (pullups disabled) Input current high (pullups disabled) Output tri-state current low Output tri-state current high Output High Voltage Output Low Voltage Output High Current Output Low Current Input capacitance Output capacitance VDD supply current @ nominal voltage and 25 C Run Deep Stop2 Light Stop3 VDDIO supply current @ nominal voltage and 25 C Run5 VDDA supply current @ nominal voltage and 25 C Deep Stop 2 1 Symbol VIHC VILC VIH VIL IIL IIH IOZL IOZH VOH VOL IOH IOL CIN COUT IDD4 Min VDDA - 0.8 -0.3 2.0 -0.3 -1 -1 -10 -10 VDD - 0.7 -- 8 8 -- -- Typ VDDA -- -- -- -- -- -- -- -- -- -- -- 8 12 Max VDDA + 0.3 0.5 5.5 0.8 1 1 10 10 -- 0.4 16 16 -- -- Unit V V V V A A A A V V mA mA pF pF -- -- -- IDDIO -- IDDA -- VEI VEIH POR -- -- -- 70 100 2.6 -- -- -- mA A mA 40 -- mA 60 2.5 50 1.5 -- 2.85 -- 2.0 A V mV V Low Voltage Interrupt6 Low Voltage Interrupt Recovery Hysteresis Power on Reset7 1. Run (operating) IDD measured using external square wave clock source (fosc = 4MHz) into XTAL. All inputs 0.2V from rail; no DC loads; outputs unloaded. All ports configured as inputs; measured with all modules enabled. PLL set to 240MHz out. Running Core, performing 50% NOP and 50% FIR. Clock at 120 MHz. 22 DSP56854 Preliminary Technical Data MOTOROLA Supply Voltage Sequencing and Separation Cautions 2. Deep Stop Mode - Operation frequency = 4 MHz, PLL set to 4 MHz, crystal oscillator and time of day module operating. 3. Light Stop Mode - Operation frequency = 120 MHz, PLL set to 240 MHz, crystal oscillator and time of day module operating. 4. 5. 6. IDD includes current for core logic, internal memories, and all internal peripheral logic circuitry. Running core and performing external memory access. Clock at 120 MHz. When VDD drops below VEI max value, an interrupt is generated. 7. Power-on reset occurs whenever the digital supply drops below 1.8V. While power is ramping up, this signal remains active for as long as the internal 2.5V is below 1.8V no matter how long the ramp up rate is. The internally regulated voltage is typically 100 mV less than VDD during ramp up until 2.5V is reached, at which time it self-regulates. 4.3 Supply Voltage Sequencing and Separation Cautions Figure 3 shows two situations to avoid in sequencing the VDD and VDDIO, VDDA supplies. 3.3V DC Power Supply Voltage VDDIO, VDDA 2 1.8V Supplies Stable VDD 1 0 Notes: 1. VDD rising before VDDIO, VDDA 2. VDDIO, VDDA rising much faster than VDD Time Figure 3. Supply Voltage Sequencing and Separation Cautions VDD should not be allowed to rise early (1). This is usually avoided by running the regulator for the VDD supply (1.8V) from the voltage generated by the 3.3V VDDIO supply, see Figure 4. This keeps VDD from rising faster than VDDIO. VDD should not rise so late that a large voltage difference is allowed between the two supplies (2). Typically this situation is avoided by using external discrete diodes in series between supplies, as shown in Figure 4. The series diodes forward bias when the difference between VDDIO and VDD reaches approximately 2.1, causing VDD to rise as VDDIO ramps up. When the VDD regulator begins proper operation, the difference between supplies will typically be 0.8V and conduction through the diode chain reduces to essentially leakage current. During supply sequencing, the following general relationship should be adhered to: VDDIO > VDD > (VDDIO - 2.1V) In practice, VDDA is typically connected directly to VDDIO with some filtering. MOTOROLA DSP56854 Preliminary Technical Data 23 Supply 3.3V Regulator VDDIO, VDDA 1.8V Regulator VDD Figure 4. Example Circuit to Control Supply Sequencing 4.4 4.5 AC Electrical Characteristics Timing waveforms in Section 4.2 are tested with a VIL maximum of 0.8 V and a VIH minimum of 2.0 V for all pins except XTAL, which is tested using the input levels in Section 4.2. In Figure 5 the levels of VIH and VIL for an input signal are shown. Low High 90% 50% 10% VIH Input Signal Midpoint1 Fall Time Note: The midpoint is VIL + (VIH - VIL)/2. VIL Rise Time Figure 5. Input Signal Measurement References Figure 6 shows the definitions of the following signal states: * * * * Active state, when a bus or signal is driven, and enters a low impedance state. Tri-stated, when a bus or signal is placed in a high impedance state. Data Valid state, when a signal level has reached VOL or VOH. Data Invalid state, when a signal level is in transition between VOL and VOH. Data1 Valid Data1 Data Invalid State Data Active Data2 Valid Data2 Data Tri-stated Data3 Valid Data3 Data Active Figure 6. Signal States 24 DSP56854 Preliminary Technical Data MOTOROLA External Clock Operation 4.6 External Clock Operation The DSP56854 system clock can be derived from a crystal or an external system clock signal. To generate a reference frequency using the internal oscillator, a reference crystal must be connected between the EXTAL and XTAL pins. 4.6.1 Crystal Oscillator The internal oscillator is designed to interface with a parallel-resonant crystal resonator in the frequency range specified for the external crystal in Table 9. In Figure 7 a typical crystal oscillator circuit is shown. Follow the crystal supplier's recommendations when selecting a crystal, because crystal parameters determine the component values required to provide maximum stability and reliable start-up. The crystal and associated components should be mounted as close as possible to the EXTAL and XTAL pins to minimize output distortion and start-up stabilization time. Crystal Frequency = 2-4 MHz (optimized for 4MHz) EXTAL XTAL Rz Sample External Crystal Parameters: Rz = 10M TOD_SEL bit in CGM must be set to 0 Figure 7. Crystal Oscillator 4.6.2 High Speed External Clock Source (> 4MHz) The recommended method of connecting an external clock is given in Figure 8. The external clock source is connected to XTAL and the EXTAL pin is held at ground, VDDA, or VDDA/2. The TOD_SEL bit in CGM must be set to 0. DSP56854 XTAL EXTAL GND,VDDA, External Clock or VDDA/2 (up to 240MHz) Figure 8. Connecting a High Speed External Clock Signal using XTAL 4.6.3 Low Speed External Clock Source (2-4MHz) The recommended method of connecting an external clock is given in Figure 9. The external clock source is connected to XTAL and the EXTAL pin is held at VDDA/2. The TOD_SEL bit in CGM must be set to 0. MOTOROLA DSP56854 Preliminary Technical Data 25 DSP56854 XTAL EXTAL External Clock (2-4MHz) VDDA/2 Figure 9. Connecting a Low Speed External Clock Signal using XTAL I Table 8. External Clock Operation Timing Requirements4 Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0-3.6V, TA = -40 to +120C, CL 50pF, fop = 120MHz Characteristic Frequency of operation (external clock driver)1 Clock Pulse Width4 External clock input rise time2, 4 External clock input fall time3, 4 1. 2. 3. 4. Symbol fosc tPW trise tfall Min 0 6.25 -- -- Typ -- -- -- -- Max 240 -- TBD TBD Unit MHz ns ns ns See Figure 8 for details on using the recommended connection of an external clock driver. External clock input rise time is measured from 10% to 90%. External clock input fall time is measured from 90% to 10%. Parameters listed are guaranteed by design. VIH External Clock 90% 50% 10% tPW tPW tfall trise 90% 50% 10% VIL Note: The midpoint is VIL + (VIH - VIL)/2. Figure 10. External Clock Timing Table 9. PLL Timing Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0-3.6V, TA = -40 to +120C, CL 50pF, fop = 120MHz Characteristic External reference crystal frequency for the PLL1 PLL output frequency PLL stabilization time 2 Symbol fosc fclk tplls Min 2 40 -- Typ 4 -- 1 Max 4 240 10 Unit MHz MHz ms 1. An externally supplied reference clock should be as free as possible from any phase jitter for the PLL to work correctly. The PLL is optimized for 4MHz input crystal. 2. This is the minimum time required after the PLL setup is changed to ensure reliable operation. 26 DSP56854 Preliminary Technical Data MOTOROLA External Memory InterfaceTiming 4.7 External Memory InterfaceTiming Table 10. External Memory Interface Timing 1, 2 Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98 V, VDDIO = VDDA = 3.0-3.6V, TA = -40 to +120C, CL 50pF, fop = 120MHz, TOP = 8.3, FIPB = 60MHz, TIPB = 16.6 Characteristic Address Valid to WR Asserted WR Width Asserted Wait states > 1 D0-D15 Out Valid to WR Asserted Data Out Hold Time from WR Deasserted Data Out Set Up Time to WR Deasserted Wait states > 1 RD Deasserted to Address Not Valid Address Valid to RD Deasserted Wait states > 1 Input Data Hold to RD Deasserted RD Assertion Width Wait states > 1 Address Valid to Input Data Valid Wait states > 1 Address Valid to RD Asserted RD Asserted to Input Data Valid Wait states > 1 WR Deasserted to RD Asserted RD Deasserted to RD Asserted WR Deasserted to WR Asserted RD Deasserted to WR Asserted Symbol tAWR tWR Typical Min 4.36 Typical Max -- Unit ns (TIPB*WS) - .81 tWRD tDOH tDOS (TIPB*WS) + 4.76 tRDA tARDD (TIPB*WS) - 2.28 tDRD tRD (TIPB*WS) - 1.58 tAD -- tARDA tRDD -- tWRRD4 tRDRD4 tWRWR4 tRDWR4 TOP TOP x 2 TOP x 2 TOP x 3 -1.70 0 12.65 4.57 5.37 -- -- -- ns ns ns -- -- ns ns -- -- ns ns -- ns (TIPB*WS) - 21.76 -- ns ns (TIPB*WS) - 21.06 -- -- -- -- ns ns ns ns ns 1. Timing is both wait state and frequency dependent. In the formulas listed, WS = the number of wait states (min. 1) and Top = System Clock Period. 2. 3. Parameters listed are guaranteed by design. EMI operates at fipb rate. Wait states are in terms of fipb periods. 4. Shows separation of R/W enables in system cycles (Top) in data space using consecutive one-word assembly language instructions. MOTOROLA DSP56854 Preliminary Technical Data 27 A0-A20, CS (See Note) tARDA tARDD tRDA tRD tWR tWRRD tRDRD RD tAWR tWRWR tRDWR tRDD tDRD Data In WR tWRD tDOS tAD tDOH Data Out D0-D15 Note: During read-modify-write instructions and internal instructions, the address lines do not change state. Figure 11. External Memory Interface Timing 4.8 Reset, Stop, Wait, Mode Select, and Interrupt Timing Table 11. Reset, Stop, Wait, Mode Select, and Interrupt Timing1, 2 Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0-3.6V, TA = -40 to +120C, CL 50pF, fop = 120MHz Characteristic RESET Assertion to Address, Data and Control Signals High Impedance Minimum RESET Assertion Duration3 RESET Deassertion to First External Address Output Edge-sensitive Interrupt Request Width IRQA, IRQB Assertion to External Data Memory Access Out Valid, caused by first instruction execution in the interrupt service routine IRQA, IRQB Assertion to General Purpose Output Valid, caused by first instruction execution in the interrupt service routine IRQA Low to First Valid Interrupt Vector Address Out recovery from Wait State4 IRQA Width Assertion to Recover from Stop State5 Fast6 Normal7, 8 Symbol Typical Min -- 30 -- 1T + 3 -- Typical Max 11 -- 120T -- 18T Unit See Figure Figure 12 Figure 12 Figure 12 Figure 13 Figure 14 tRAZ tRA tRDA tIRW tIDM ns ns ns ns ns tIG -- 18T ns Figure 14 tIRI -- 13T ns Figure 15 tIW 4T 8ET -- -- ns ns Figure 16 28 DSP56854 Preliminary Technical Data MOTOROLA Reset, Stop, Wait, Mode Select, and Interrupt Timing Table 11. Reset, Stop, Wait, Mode Select, and Interrupt Timing1, 2 Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0-3.6V, TA = -40 to +120C, CL 50pF, fop = 120MHz Characteristic Delay from IRQA Assertion to Fetch of first instruction (exiting Stop) Fast5 Normal6,7 RSTO pulse width7 normal operation internal reset mode 1. 2. Parameters listed are guaranteed by design. Symbol tIF Typical Min Typical Max Unit See Figure Figure 16 -- -- tRSTO 128ET 8ET 13T 25ET ns ns Figure 17 -- -- -- -- In the formulas, T = clock cycle. For fop = 120MHz operation and fipb = 60MHz, T = 8.33ns. 3. At reset, the PLL is disabled and bypassed. The part is then put into Run mode and tclk assumes the period of the source clock, txtal, textal or tosc. 4. The minimum is specified for the duration of an edge-sensitive IRQA interrupt required to recover from the Wait state. This is not the minimum required so that the IRQA interrupt is accepted. 5. 6. This interrupt instruction fetch is visible on the pins only in Mode 3. Fast stop mode: Fast stop recovery applies when fast stop mode recovery is requested (OMR bit 6 is set to 1). The PLL and the master clock are unaffected by stop mode entry. Recovery takes one less cycle and tclk will continue with the same value it had before stop mode was entered. 7. Normal stop mode: As a power saving feature, normal stop mode disables and bypasses the PLL. Stop mode will then shut down the master clock, recovery will take an extra cycle (to restart the clock), and tclk will resume at the input clock source rate. 8. ET = External Clock period; for an external crystal frequency of 4MHz, ET=250ns. RESET tRA tRAZ tRDA A0-A20, D0-D15 CS, RD, WR First Fetch First Fetch Figure 12. Asynchronous Reset Timing IRQA IRQB tIRW Figure 13. External Interrupt Timing (Negative-Edge-Sensitive) MOTOROLA DSP56854 Preliminary Technical Data 29 A0-A20, CS, RD, WR tIDM First Interrupt Instruction Execution IRQA, IRQB a) First Interrupt Instruction Execution General Purpose I/O Pin IRQA, IRQB tIG b) General Purpose I/O Figure 14. External Level-Sensitive Interrupt Timing IRQA, IRQB tIRI A0-A20, CS, RD, WR First Interrupt Vector Instruction Fetch Figure 15. Interrupt from Wait State Timing tIW IRQA tIF A0-A20, CS, RD, WR First Instruction Fetch Not IRQA Interrupt Vector Figure 16. Recovery from Stop State Using Asynchronous Interrupt Timing RESET tRSTO Figure 17. Reset Output Timing 30 DSP56854 Preliminary Technical Data MOTOROLA Host Interface Port 4.9 Host Interface Port Table 12. Host Interface Port Timing1 Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0-3.6V, TA = -40 to +120C, CL 50pF, fop = 120MHz Characteristic Access time Disable time Time to disassert Lead time Access time Disable time Disable time Setup time Hold time Setup time Hold time Pulse width Time to re-assert 1. After second write in 16-bit mode 2. After first write in 16-bit mode or after write in 8-bit mode 1. Symbol TACKDV TACKDZ TACKREQH Min -- 3 3.5 0 -- 5 3 3 1 3 1 5 Max 13 -- 9 -- 13 -- -- -- -- -- -- -- Unit See Figure ns ns ns ns ns ns ns ns ns ns ns ns Figure 18 Figure 18 Figure 18 Figure 21 Figure 18 Figure 21 Figure 19 Figure 20 Figure 19 Figure 20 Figure 19 Figure 20 Figure 21 Figure 21 Figure 22 Figure 23 Figure 22 Figure 23 Figure 22 Figure 23 Figure 18, Figure 21 TREQACKL TRADV TRADX TRADZ TDACKS TACKDH TADSS TDSAH TWDS TACKREQL 4T + 5 5 5T + 9 13 ns ns The formulas: T = clock cycle. f ipb = 60MHz, T = 16.7ns. HACK TACKDZ TACKDV HD TREQACKL TACKREQH TACKREQL HREQ Figure 18. DSP-to-Host DMA Read Mode MOTOROLA DSP56854 Preliminary Technical Data 31 HA TRADX HCS HDS HRW TRADV TRADZ HD Figure 19. Single Strobe Read Mode HA TRADX HCS HWR HRD TRADZ TRADV HD Figure 20. Dual Strobe Read Mode HACK TDACKS TACKDH HD TREQACKL TACKREQH TACKREQL HREQ Figure 21. Host-to-DSP DMA Write Mode 32 DSP56854 Preliminary Technical Data MOTOROLA Host Interface Port HA TDSAH HCS TWDS HDS TDSAH HRW TADSS TADSS TDSAH HD Figure 22. Single Strobe Write Mode HA HCS TWDS HWR TADSS TDSAH HRD TADSS HD Figure 23. Dual Strobe Write Mode MOTOROLA DSP56854 Preliminary Technical Data 33 4.10 Serial Peripheral Interface (SPI) Timing Table 13. SPI Timing 1 Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0-3.6V, TA = -40 to +120C, CL 50pF, fop = 120MHz Characteristic Cycle time Master Slave Enable lead time Master Slave Enable lag time Master Slave Clock (SCLK) high time Master Slave Clock (SCLK) low time Master Slave Data set-up time required for inputs Master Slave Data hold time required for inputs Master Slave Access time (time to data active from high-impedance state) Slave Disable time (hold time to high-impedance state) Slave Data valid for outputs Master Slave (after enable edge) Data invalid Master Slave Rise time Master Slave Fall time Master Slave 1. Parameters listed are guaranteed by design. Symbol tC Min Max Unit See Figure Figures 24, 25, 26, 27 25 25 tELD -- 12.5 tELG -- 12.5 tCH 9 12.5 tCL 12 12.5 tDS 10 2 tDH 0 2 tA 5 tD 2 tDV -- -- tDI 0 0 tR -- -- tF -- -- -- -- ns ns Figure 27 -- -- ns ns Figure 27 -- -- ns ns ns ns Figures 24, 25, 26, 27 -- -- Figure 27 -- -- ns ns Figures 24, 25, 26, 27 -- -- ns ns -- -- ns ns ns ns ns ns Figures 24, 25, 26, 27 Figure 27 15 Figure 27 9 2 14 ns ns Figures 24, 25, 26, 27 -- -- ns ns Figures 24, 25, 26, 27 11.5 10.0 ns ns Figures 24, 25, 26, 27 9.7 9.0 ns ns Figures 24, 25, 26, 27 34 DSP56854 Preliminary Technical Data MOTOROLA Serial Peripheral Interface (SPI) Timing SS (Input) SS is held High on master tC tR tF SCLK (CPOL = 0) (Output) tCL tCH tF tR tCL SCLK (CPOL = 1) (Output) tDH tDS tCH tCH MISO (Input) MSB in tDI Bits 14-1 tDV LSB in tDI(ref) MOSI (Output) Master MSB out tF Bits 14-1 Master LSB out tR Figure 24. SPI Master Timing (CPHA = 0) SS (Input) tC SS is held High on master tF tCL tR SCLK (CPOL = 0) (Output) tCH tF tCL SCLK (CPOL = 1) (Output) tCH tDS tR tDH MISO (Input) tDV(ref) MSB in tDI Bits 14-1 tDV LSB in MOSI (Output) Master MSB out tF Bits 14- 1 Master LSB out tR Figure 25. SPI Master Timing (CPHA = 1) MOTOROLA DSP56854 Preliminary Technical Data 35 SS (Input) tC tCL tCH tELD tCL tR tF tELG SCLK (CPOL = 0) (Input) SCLK (CPOL = 1) (Input) tA tCH tR tF tD MISO (Output) tDS Slave MSB out tDH Bits 14-1 tDV Slave LSB out tDI tDI MOSI (Input) MSB in Bits 14-1 LSB in Figure 26. SPI Slave Timing (CPHA = 0) SS (Input) tF tC tR tCL tCH tELD tELG tCL tDV tA tCH tF tR tD SCLK (CPOL = 0) (Input) SCLK (CPOL = 1) (Input) MISO (Output) tDS Slave MSB out Bits 14-1 tDV tDH Slave LSB out tDI MOSI (Input) MSB in Bits 14-1 LSB in Figure 27. SPI Slave Timing (CPHA = 1) 36 DSP56854 Preliminary Technical Data MOTOROLA Quad Timer Timing 4.11 Quad Timer Timing Table 14. Quad Timer Timing1, 2 Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0-3.6V, TA = -40 to +120C, CL 50pF, fop = 120MHz Characteristic Timer input period Timer input high/low period Timer output period Timer output high/low period 1. 2. Parameters listed are guaranteed by design. Symbol PIN PINHL POUT POUTHL Min 2T + 3 1T + 3 2T - 3 1T - 3 Max -- -- -- -- Unit ns ns ns ns In the formulas listed, T = clock cycle. For fop = 120MHz operation and fipb = 60MHz, T = 8.33ns. Timer Inputs PIN PINHL PINHL Timer Outputs POUT POUTHL POUTHL Figure 28. Timer Timing Enhanced Synchronous Serial Interface (ESSI) Timing Table 15. ESSI Master Mode1 Switching Characteristics Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0-3.6V, TA = -40 to +120C, CL 50pF, fop = 120MHz Parameter SCK frequency SCK period3 SCK high time SCK low time Output clock rise/fall time Delay from SCK high to SC2 (bl) high - Master5 Delay from SCK high to SC2 (wl) high - Master5 Delay from SC0 high to SC1 (bl) high - Master5 Symbol fs tSCKW tSCKH tSCKL -- tTFSBHM tTFSWHM tRFSBHM Min -- 66.7 33.44 33.44 -- -1.0 -1.0 -1.0 Typ -- -- -- -- 4 -- -- -- Max 152 -- -- -- -- 1.0 1.0 1.0 Units MHz ns ns ns ns ns ns ns MOTOROLA DSP56854 Preliminary Technical Data 37 Table 15. ESSI Master Mode1 Switching Characteristics (Continued) Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0-3.6V, TA = -40 to +120C, CL 50pF, fop = 120MHz Parameter Delay from SC0 high to SC1 (wl) high - Master5 Delay from SCK high to SC2 (bl) low - Master5 Delay from SCK high to SC2 (wl) low - Master5 Delay from SC0 high to SC1 (bl) low - Master5 Delay from SC0 high to SC1 (wl) low - Master5 SCK high to STD enable from high impedance - Master SCK high to STD valid - Master SCK high to STD not valid - Master SCK high to STD high impedance - Master SRD Setup time before SC0 low - Master SRD Hold time after SC0 low - Master Symbol tRFSWHM tTFSBLM tTFSWLM tRFSBLM tRFSWLM tTXEM tTXVM tTXNVM tTXHIM tSM tHM Min -1.0 -1.0 -1.0 -1.0 -1.0 -0.1 -0.1 -0.1 -4 4 4 Typ -- -- -- -- -- -- -- -- -- -- -- Max 1.0 1.0 1.0 1.0 1.0 2 2 -- 0 -- -- Units ns ns ns ns ns ns ns ns ns ns ns Synchronous Operation (in addition to standard internal clock parameters) SRD Setup time before SCK low - Master SRD Hold time after SCK low - Master tTSM tTHM 4 4 -- -- -- -- ns ns 1. Master mode is internally generated clocks and frame syncs 2. Max clock frequency is IP_clk/4 = 60MHz / 4 = 15MHz for an 120MHz part. 3. All the timings for the ESSI are given for a non-inverted serial clock polarity (TSCKP=0 in SCR2 and RSCKP=0 in SCSR) and a non-inverted frame sync (TFSI=0 in SCR2 and RFSI=0 in SCSR). If the polarity of the clock and/or the frame sync have been inverted, all the timings remain valid by inverting the clock signal SCK/SC0 and/or the frame sync SC2/SC1 in the tables and in the figures. 4. 50 percent duty cycle 5. bl = bit length; wl = word length 38 DSP56854 Preliminary Technical Data MOTOROLA Quad Timer Timing tSCKW tSCKH tSCKL SCK output tTFSBHM SC2 (bl) output tTFSWHM SC2 (wl) output tTXVM tTXEM STD SC0 output tRFSBHM SC1 (bl) output tRFSWHM SC1 (wl) output tTSM tSM SRD tHM tTHM tRFSWLM tRFBLM First Bit tTFSWLM tTFSBLM tTXNVM Last Bit tTXHIM Figure 29. Master Mode Timing Diagram Table 16: ESSI Slave Mode1 Switching Characteristics Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0-3.6V, TA = -40 to +120C, CL 50pF, fop = 120MHz Parameter SCK frequency SCK period3 SCK high time SCK low time Output clock rise/fall time Delay from SCK high to SC2 (bl) high - Slave5 Delay from SCK high to SC2 (wl) high - Slave5 Symbol fs tSCKW tSCKH tSCKL -- tTFSBHS tTFSWHS Min -- 66.7 33.44 33.44 -- -1 -1 Typ -- -- -- -- 4 -- -- Max 152 -- -- -- -- 29 29 Units MHz ns ns ns ns ns ns MOTOROLA DSP56854 Preliminary Technical Data 39 Table 16: ESSI Slave Mode1 Switching Characteristics (Continued) Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0-3.6V, TA = -40 to +120C, CL 50pF, fop = 120MHz Parameter Delay from SC0 high to SC1 (bl) high - Slave5 Delay from SC0 high to SC1 (wl) high - Slave5 Delay from SCK high to SC2 (bl) low - Slave5 Delay from SCK high to SC2 (wl) low - Slave5 Delay from SC0 high to SC1 (bl) low - Slave5 Delay from SC0 high to SC1 (wl) low - Slave5 SCK high to STD enable from high impedance - Slave SCK high to STD valid - Slave SC2 high to STD enable from high impedance (first bit) - Slave SC2 high to STD valid (first bit) - Slave SCK high to STD not valid - Slave SCK high to STD high impedance - Slave SRD Setup time before SC0 low - Slave SRD Hold time after SC0 low - Slave Symbol tRFSBHS tRFSWHS tTFSBLS tTFSWLS tRFSBLS tRFSWLS tTXES tTXVS tFTXES tFTXVS tTXNVS tTXHIS tSS tHS Min -1 -1 -29 -29 -29 -29 -- 4 4 4 4 4 4 4 Typ -- -- -- -- -- -- -- -- -- -- -- -- -- -- Max 29 29 29 29 29 29 15 15 15 15 15 15 -- -- Units ns ns ns ns ns ns ns ns ns ns ns ns ns ns Synchronous Operation (in addition to standard external clock parameters) SRD Setup time before SCK low - Slave SRD Hold time after SCK low - Slave tTSS tTHS 4 4 -- -- -- -- ns ns 1. Slave mode is externally generated clocks and frame syncs 2. Max clock frequency is IP_clk/4 = 60MHz / 4 = 15MHz for a 120MHz part. 3. All the timings for the ESSI are given for a non-inverted serial clock polarity (TSCKP=0 in SCR2 and RSCKP=0 in SCSR) and a non-inverted frame sync (TFSI=0 in SCR2 and RFSI=0 in SCSR). If the polarity of the clock and/or the frame sync have been inverted, all the timings remain valid by inverting the clock signal SCK/SC0 and/or the frame sync SC2/SC1 in the tables and in the figures. 4. 50 percent duty cycle 5. bl = bit length; wl = word length 40 DSP56854 Preliminary Technical Data MOTOROLA Serial Communication Interface (SCI) Timing tSCKW tSCKH SCK input tTFSBLS tTFSBHS SC2 (bl) input tTFSWHS SC2 (wl) input tFTXES tTXVS tTXES STD SC0 input tRFSBHS SC1 (bl) input tRFSWHS SC1 (wl) input tTSS tRFSWLS tRFBLS First Bit tFTXVS tTXNVS tTXHIS Last Bit tTFSWLS tSCKL tSS SRD tHS tTHS Figure 30. Slave Mode Clock Timing 4.12 Serial Communication Interface (SCI) Timing Table 17. SCI Timing4 Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0-3.6V, TA = -40 to +120C, CL 50pF, fop = 120MHz Characteristic Baud Rate1 RXD2 Pulse Width TXD3 Pulse Width 1. 2. 3. 4. Symbol BR RXDPW TXDPW Min -- 0.965/BR 0.965/BR Max (fMAX)/(32) 1.04/BR 1.04/BR Unit Mbps ns ns fMAX is the frequency of operation of the system clock in MHz. The RXD pin in SCI0 is named RXD0 and the RXD pin in SCI1 is named RXD1. The TXD pin in SCI0 is named TXD0 and the TXD pin in SCI1 is named TXD1. Parameters listed are guaranteed by design. MOTOROLA DSP56854 Preliminary Technical Data 41 RXD SCI receive data pin (Input) RXDPW Figure 31. RXD Pulse Width TXD SCI receive data pin (Input) TXDPW Figure 32. TXD Pulse Width 4.13 JTAG Timing Table 18. JTAG Timing1, 3 Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0-3.6V, TA = -40 to +120C, CL 50pF, fop = 120MHz Characteristic TCK frequency of operation2 TCK cycle time TCK clock pulse width TMS, TDI data setup time TMS, TDI data hold time TCK low to TDO data valid TCK low to TDO tri-state TRST assertion time DE assertion time Symbol fOP tCY tPW tDS tDH tDV tTS tTRST tDE Min DC 33.3 16.6 3 3 -- -- 35 4T Max 30 -- -- -- -- 12 10 -- -- Unit MHz ns ns ns ns ns ns ns ns 1. Timing is both wait state and frequency dependent. For the values listed, T = clock cycle. For 120MHz operation, T = 8.33ns. 2. 3. TCK frequency of operation must be less than 1/4 the processor rate. Parameters listed are guaranteed by design. 42 DSP56854 Preliminary Technical Data MOTOROLA JTAG Timing tCY tPW VIH tPW VM TCK (Input) VM = VIL + (VIH - VIL)/2 VM VIL Figure 33. Test Clock Input Timing Diagram TCK (Input) tDS tDH TDI TMS (Input) TDO (Output) Input Data Valid tDV Output Data Valid tTS TDO (Output) Figure 34. Test Access Port Timing Diagram TRST (Input) tTRST Figure 35. TRST Timing Diagram MOTOROLA DSP56854 Preliminary Technical Data 43 DE tDE Figure 36. Enhanced OnCE--Debug Event GPIO Timing Characteristic GPIO input period GPIO input high/low period GPIO output period GPIO output high/low period 1. Table 19. GPIO Timing1, 2 Symbol PIN PINHL POUT POUTHL Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0-3.6V, TA = -40 to +120C, CL 50pF, fop = 120MHz Min 2T + 3 1T + 3 2T - 3 1T - 3 Max -- -- -- -- Unit ns ns ns ns In the formulas listed, T = clock cycle. For fop = 120MHz operation and fipb = 60MHz, T = 8.33ns Parameters listed are guaranteed by design. 2. GPIO Inputs PIN PINHL PINHL GPIO Outputs POUT POUTHL POUTHL Figure 37. GPIO Timing 44 DSP56854 Preliminary Technical Data MOTOROLA Package and Pin-Out Information DSP56854 Part 5 Packaging 5.1 Package and Pin-Out Information DSP56854 This section contains package and pin-out information for the 128-pin LQFP configuration of the DSP56854. VSSIO TIO0 VDDIO TIO1 TIO2 TIO3 VSS TXD1 RXD1 VSSIO VDDIO VDDIO D5 D4 D3 D2 D1 HRWB HA2 HA1 HA0 VSS VDD VDD CS3 CS2 CS1 CS0 VSSIO D0 VDDIO A20 A19 A18 A17 A16 TXD0 RXD0 HDS HCS HREQ HACK D6 D7 D8 D9 D10 VDD VSS VDDIO VSSIO STD0 SRD0 SCK0 SC00 SC01 SC02 D11 D12 VDDIO VSSIO D13 D14 D15 PIN 65 PIN 103 Motorola DSP56854 ORIENTATION MARK PIN 1 RD WR A0 A1 A2 A3 VDD VSS MODA MODB MODC VDDIO VSSIO MISO MOSI SCK SS VDDIO VSSIO PIN 39 VDD VSS VSSIO VDDIO A15 A14 A13 A12 VSSIO VDDIO TCK TMS TDI TDO TRST DE VSS VDD A11 A10 A9 A8 VSSIO VDDIO HD7 HD6 Figure 38. Top View, DSP56854 128-pin LQFP Package MOTOROLA DSP56854 Preliminary Technical Data IRQA IRQB VDDA VSSA XTAL EXTAL A4 A5 A6 A7 HD0 HD1 HD2 CLKO RSTO RESET HD3 HD4 HD5 45 Table 20. DSP56854 Pin Identification by Pin Number Pin No. 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 27 28 29 30 31 32 Signal Name MISO MOSI SCK SS VDDIO VSSIO RD WR A0 A1 A2 A3 VDD VSS MODA MODB MODC VDDIO VSSIO IRQA IRQB VDDA VSSA XTAL EXTAL A4 A5 A6 A7 HD0 HD1 HD2 Pin No. 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 Signal Name CLKO RSTO RESET HD3 HD4 HD5 HD6 HD7 VDDIO VSSIO A8 A9 A10 A11 VDD VSS DE TRST TDO TDI TMS TCK VDDIO VSSIO A12 A13 A14 A15 VDDIO VSSIO VSS VDD Pin No. 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 Signal Name RXD0 TXDO A16 A17 A18 A19 A20 VDDIO D0 VSSIO CS0 CS1 CS2 CS3 VDD VDD VSS HA0 HA1 HA2 HRWB D1 D2 D3 D4 D5 VDDIO VDDIO VSSIO RXD1 TXD1 VSS Pin No. 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 Signal Name TIO3 TIO2 TIO1 VDDIO TIO0 VSSIO HDS HCS HREQ HACK D6 D7 D8 D9 D10 VDD VSS VDDIO VSSIO STD0 SRD0 SCK0 SC00 SC01 SC02 D11 D12 VDDIO VSSIO D13 D14 D15 46 DSP56854 Preliminary Technical Data MOTOROLA Package and Pin-Out Information DSP56854 102 103 65 64 128 38 39 DIM A A1 A2 b b1 c c1 D D1 e E E1 L L1 L2 S R1 R2 0 01 02 MILLIMETERS MIN MAX --1.60 0.05 0.15 1.35 1.45 0.17 0.27 0.17 0.23 0.09 0.20 0.09 0.16 22.00 BSC 20.00BSC 0.50 BSC 16.00 BSC 14.00 BSC 0.45 0.75 1.00 REF 0.50 REF 0.20 --0.08 --0.08 0.20 0o 0o 11o 7o --13o NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DATUM PLANE H IS LOCATED AT BOTTOM OF LEAD AND IS COINCIDENT WITH THE LEAD WHERE THE LEAD EXITS THE PLASTIC BODY AT THE BOTTOM OF THE PARTING LINE. 4. DATUMS A, B, AND D TO BE DETERMINED AT DATUM PLANE H. 5. DIMENSIONS D AND E TO BE DETERMINED AT SEATING PLANE C. 6. DIMENSIONS D1 AND E1 DO NOT INCLUDE MOLD PROTRUSION. ALLOWABLE PROTRUSION IS 0.25 PER SIDE. DIMENSIONS D1 AND E1 DO INCLUDE MOLD MISMATCH AND ARE DETERMINED AT DATUM PLANE H. 7. DIMENSION b DOES NOT INCLUDE DAMBAR PROTRUSION. DAMBAR PROTRUSION SHALL NOT CAUSE THE b DIMENSION TO EXCEED 0.35. Case Outline - 1129-01 Figure 39. 128-pin LQFP Mechanical Information MOTOROLA DSP56854 Preliminary Technical Data 47 Part 6 Design Considerations 6.1 Thermal Design Considerations An estimation of the chip junction temperature, TJ, in C can be obtained from the equation: Equation 1: Where: TA = ambient temperature C RJA = package junction-to-ambient thermal resistance C/W PD = power dissipation in package Historically, thermal resistance has been expressed as the sum of a junction-to-case thermal resistance and a case-to-ambient thermal resistance: Equation 2: Where: RJA = package junction-to-ambient thermal resistance C/W RJC = package junction-to-case thermal resistance C/W RCA = package case-to-ambient thermal resistance C/W RJC is device-related and cannot be influenced by the user. The user controls the thermal environment to change the case-to-ambient thermal resistance, RCA. For example, the user can change the air flow around the device, add a heat sink, change the mounting arrangement on the Printed Circuit Board (PCB), or otherwise change the thermal dissipation capability of the area surrounding the device on the PCB. This model is most useful for ceramic packages with heat sinks; some 90% of the heat flow is dissipated through the case to the heat sink and out to the ambient environment. For ceramic packages, in situations where the heat flow is split between a path to the case and an alternate path through the PCB, analysis of the device thermal performance may need the additional modeling capability of a system level thermal simulation tool. The thermal performance of plastic packages is more dependent on the temperature of the PCB to which the package is mounted. Again, if the estimations obtained from RJA do not satisfactorily answer whether the thermal performance is adequate, a system level model may be appropriate. A complicating factor is the existence of three common definitions for determining the junction-to-case thermal resistance in plastic packages: * Measure the thermal resistance from the junction to the outside surface of the package (case) closest to the chip mounting area when that surface has a proper heat sink. This is done to minimize temperature variation across the surface. Measure the thermal resistance from the junction to where the leads are attached to the case. This definition is approximately equal to a junction to board thermal resistance. Use the value obtained by the equation (TJ - TT)/PD where TT is the temperature of the package case determined by a thermocouple. RJA = RJC + RCA TJ = TA + (PD x RJA) * * As noted above, the junction-to-case thermal resistances quoted in this data sheet are determined using the first definition. From a practical standpoint, that value is also suitable for determining the junction temperature from a case thermocouple reading in forced convection environments. In natural convection, using the junction-to-case thermal resistance to estimate junction temperature from a thermocouple reading on the case of the package will estimate a junction temperature slightly hotter than actual. Hence, the new 48 DSP56854 Preliminary Technical Data MOTOROLA Electrical Design Considerations thermal metric, Thermal Characterization Parameter, or JT, has been defined to be (TJ - TT)/PD. This value gives a better estimate of the junction temperature in natural convection when using the surface temperature of the package. Remember that surface temperature readings of packages are subject to significant errors caused by inadequate attachment of the sensor to the surface and to errors caused by heat loss to the sensor. The recommended technique is to attach a 40-gauge thermocouple wire and bead to the top center of the package with thermally conductive epoxy. 6.2 Electrical Design Considerations CAUTION This device contains protective circuitry to guard against damage due to high static voltage or electrical fields. However, normal precautions are advised to avoid application of any voltages higher than maximum rated voltages to this high-impedance circuit. Reliability of operation is enhanced if unused inputs are tied to an appropriate voltage level. Use the following list of considerations to assure correct DSP operation: * * Provide a low-impedance path from the board power supply to each VDD pin on the DSP, and from the board ground to each VSS (GND) pin. The minimum bypass requirement is to place six 0.01-0.1 F capacitors positioned as close as possible to the package supply pins. The recommended bypass configuration is to place one bypass capacitor on each of the ten VDD/VSS pairs, including VDDA/VSSA. Ensure that capacitor leads and associated printed circuit traces that connect to the chip VDD and VSS (GND) pins are less than 0.5 inch per capacitor lead. Use at least a four-layer Printed Circuit Board (PCB) with two inner layers for VDD and GND. Bypass the VDD and GND layers of the PCB with approximately 100 F, preferably with a highgrade capacitor such as a tantalum capacitor. Because the DSP output signals have fast rise and fall times, PCB trace lengths should be minimal. Consider all device loads as well as parasitic capacitance due to PCB traces when calculating capacitance. This is especially critical in systems with higher capacitive loads that could create higher transient currents in the VDD and GND circuits. All inputs must be terminated (i.e., not allowed to float) using CMOS levels. Take special care to minimize noise levels on the VDDA and VSSA pins. When using Wired-OR mode on the SPI or the IRQx pins, the user must provide an external pullup device. * * * * * * * * MOTOROLA DSP56854 Preliminary Technical Data 49 * Designs that utilize the TRST pin for JTAG port or Enhance OnCE module functionality (such as development or debugging systems) should allow a means to assert TRST whenever RESET is asserted, as well as a means to assert TRST independently of RESET. Designs that do not require debugging functionality, such as consumer products, should tie these pins together. The internal POR (Power on Reset) will reset the part at power on with reset asserted or pulled high but requires that TRST be asserted at power on. * 50 DSP56854 Preliminary Technical Data MOTOROLA Electrical Design Considerations Part 7 Ordering Information Table 21 lists the pertinent information needed to place an order. Consult a Motorola Semiconductor sales office or authorized distributor to determine availability and to order parts. Table 21. DSP56854 Ordering Information Part DSP56854 Supply Voltage 1.8V, 3.3V Package Type Low-Profile Quad Flat Pack (LQFP) Pin Count 128 Frequency (MHz) 120 Order Number DSP56854FG120 MOTOROLA DSP56854 Preliminary Technical Data 51 Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. "Typical" parameters which may be provided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and the Stylized M Logo are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. MOTOROLA and the Stylized M Logo are registered in the US Patent & Trademark Office. All other product or service names are the property of their respective owners. (c) Motorola, Inc. 2002. How to reach us: USA/EUROPE/Locations Not Listed: Motorola Literature Distribution; P.O. Box 5405, Denver, Colorado 80217. 1-303-675-2140 or 1-800-441-2447 JAPAN: Motorola Japan Ltd.; SPS, Technical Information Center, 3-20-1, Minami-Azabu. Minato-ku, Tokyo 106-8573 Japan. 81-3-3440-3569 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Centre, 2 Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong. 852-26668334 Technical Information Center: 1-800-521-6274 HOME PAGE: http://www.motorola.com/semiconductors/ DSP56854/D |
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