DSP56857 View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

Manufacturer

DSP56857

16-bit Digital Signal Controllers

Freescale Semiconductor 

56857 General Description

• 120 MIPS at 120MHz

• 40K x 16-bit Program SRAM

• 24K x 16-bit Data SRAM

• 1K x 16-bit Boot ROM

• Six (6) independent channels of DMA

• Two (2) Enhanced Synchronous Serial Interfaces

(ESSI)

• Two (2) Serial Communication Interfaces (SCI)

• Serial Port Interface (SPI)

• Four (4) dedicated GPIO

• 8-bit Parallel Host Interface

• General Purpose 16-bit Quad Timer

• JTAG/Enhanced On-Chip Emulation (OnCE™) for

unobtrusive, real-time debugging

• Computer Operating Properly (COP)/Watchdog Timer

• Time-of-Day (TOD)

• 100 LQFP package

• Up to 47 GPIO

Memory

Program Memory

40,960 x 16 SRAM

Boot ROM

1024 x 16 ROM

Data Memory

24,576 x 16 SRAM

6

JTAG/

Enhanced

OnCE

VDDIO

12

VDD VSSIO VSS VDDA VSSA

8

12 5

2

16-Bit

DSP56800E Core

Program Controller

and

Hardware Looping Unit

Address

Generation Unit

Data ALU

16 x 16 + 36 Æ 36-Bit MAC

Three 16-bit Input Registers

Four 36-bit Accumulators

Bit

Manipulation

Unit

PAB

PDB

CDBR

CDBW

XDB2

XAB1

XAB2

PAB

PDB

CDBR

CDBW

System

Bus

Control

DMA

6 channel

Core CLK

IPBus Bridge (IPBB)

Decoding

Peripherals

CS0-CS3[3:0]

used as GPIOA0-A3

GPIO Contol

2 SCI ESSI0

or

or

GPIOE GPIOC

ESSI1

or

GPIOD

Quad

Timer

or

GPIOG

SPI

or

GPIOF

Host Interrupt

Interface Controller

or

GPIOB

4

6

6

4

4

16 IRQA

IRQB

56857 Block Diagram

COP/

Watch-

dog

POR

CLKO

IPBus CLK

System

3

MODEA-C or

(GPIOH0-H2)

COP/TOD CLK Integration

Module

RSTO

RESET

Time

of

Day

Clock

Generator

OSC PLL

EXTAL

XTAL

56857 Technical Data, Rev. 6

Freescale Semiconductor

3

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