dsp56857 Freescale Semiconductor, Inc, dsp56857 Datasheet - Page 3

• Manufacturer Part Number: dsp56857
• Description: Dsp56857 Digital Signal Controller
• Manufacturer: Freescale Semiconductor, Inc

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
• Two (2) Serial Communication Interfaces (SCI)
• Serial Port Interface (SPI)
(ESSI)
used as GPIOA0-A3
CS0-CS3[3:0]
Decoding
Peripherals
GPIO Contol
40,960 x 16 SRAM
24,576 x 16 SRAM
Program Memory
1024 x 16 ROM
Data Memory
Memory
Boot ROM
Hardware Looping Unit
GPIOE
2 SCI
Program Controller
XDB2
XAB1
XAB2
PAB
PDB
CDBR
CDBW
or
4
56857 Technical Data, Rev. 6
56857 Block Diagram
GPIOC
and
ESSI0
or
6
GPIOD
ESSI1
PAB
PDB
CDBR
CDBW
or
6
GPIOG
Generation Unit
Timer
Quad
or
Enhanced
Address
4
JTAG/
OnCE
6
IPBus Bridge (IPBB)
GPIOF
SPI
or
4
• Four (4) dedicated GPIO
• 8-bit Parallel Host Interface
• General Purpose 16-bit Quad Timer
• JTAG/Enhanced On-Chip Emulation (OnCE™) for
• Computer Operating Properly (COP)/Watchdog Timer
• Time-of-Day (TOD)
• 100 LQFP package
• Up to 47 GPIO
Interface
GPIOB
unobtrusive, real-time debugging
Host
V
12
or
DDIO
Three 16-bit Input Registers
16
16 x 16 + 36 Æ 36-Bit MAC
Four 36-bit Accumulators
IRQA
Controller
Interrupt
8
V
DSP56800E Core
System
Control
IRQB
DD
Data ALU
Bus
V
12
SSIO
16-Bit
V
5
SS
Watch-
COP/
dog
V
DDA
Manipulation
V
2
SSA
Time
COP/TOD CLK
Day
Unit
Bit
of
IPBus CLK
6 channel
DMA
OSC PLL
Core CLK
Generator
Integration
System
Clock
Module
POR
3
RSTO
RESET
CLKO
(GPIOH0-H2)
MODEA-C or
EXTAL
XTAL
3