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56855 Datasheet(PDF) 3 Page - Freescale Semiconductor, Inc

Part No. 56855
Description  16-bit Digital Signal Controllers
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Maker  FREESCALE [Freescale Semiconductor, Inc]
Homepage  http://www.freescale.com
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56855 Datasheet(HTML) 3 Page - Freescale Semiconductor, Inc

 
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56855 Technical Data, Rev. 6
Freescale Semiconductor
3
56855 Block Diagram
JTAG/
Enhanced
OnCE
Program Controller
and
Hardware Looping Unit
Data ALU
16 x 16 + 36
→ 36-Bit MAC
Three 16-bit Input Registers
Four 36-bit Accumulators
Address
Generation Unit
Bit
Manipulation
Unit
16-Bit
DSP56800E Core
XTAL
EXTAL
Interrupt
Controller
Quad
Timer
or
GPIOG
4
CLKO
External Address
Bus Switch
External Bus
Interface Unit
RESET
IRQA
IRQB
VDD VSSIO
VDDA VSSA
External Data
Bus Switch
Bus Control
WR Enable
RD Enable
CS0-CS3[3:0] or
A0-20 [20:0]
MODEA-C or
D0-D15 [15:0]
6
Program Memory
24,576 x 16 SRAM
Boot ROM
1024 x 16 ROM
Data Memory
24,576 x 16 SRAM
PDB
PDB
XAB1
XAB2
XDB2
CDBR
2 SCI
or
GPIOE
IPBus Bridge (IPBB)
3
(GPIOH0-H2)
4
10
VDDIO
10
Decoding
Peripherals
System
Bus
Control
Memory
PAB
PAB
CDBW
CDBR
CDBW
VSS
4
GPIOA0-GPIOA3[3:0]
6
ESSI0
or
GPIOC
RSTO
DMA
6 channel
POR
Integration
Module
System
COP/
Watch-
dog
Time
of
Day
Clock
Generator
OSC PLL
IPBus CLK
COP/TOD CLK
Core CLK
56855 General Description
• 120 MIPS at 120MHz
• 24K x 16-bit Program SRAM
• 24K x 16-bit Data SRAM
• 1K x 16-bit Boot ROM
• Access up to 2M words of program memory or 8M
words of data memory
• Chip Select Logic for glueless interface to ROM and
SRAM
• Six (6) independent channels of DMA
• Enhanced Synchronous Serial Interface (ESSI)
• Two (2) Serial Communication Interfaces (SCI)
• General Purpose 16-bit Quad Timer with 1 external pin
• 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 18 GPIO


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