Datasheet

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SHARC Processor
ADSP-21161N
Rev. C Document Feedback
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SUMMARY
High performance 32-Bit DSP—applications in audio, medi-
cal, military, wireless communications, graphics, imaging,
motor-control, and telephony
Super Harvard Architecture—four independent buses for
dual data fetch, instruction fetch, and nonintrusive zero-
overhead I/O
Code compatible with all other sharc family DSPs
Single-instruction multiple-data (SIMD) computational archi-
tecture—two 32-bit IEEE floating-point computation units,
each with a multiplier, ALU, shifter, and register file
Serial ports offer I
2
S support via 8 programmable and simul-
taneous receive or transmit pins, which support up to 16
transmit or 16 receive channels of audio
Integrated peripherals—integrated I/O processor, 1M bit on-
chip dual-ported SRAM, SDRAM controller, glueless multi-
processing features, and I/O ports (serial, link, external
bus, SPI, and JTAG)
ADSP-21161N supports 32-bit fixed, 32-bit float, and 40-bit
floating-point formats
100 MHz/110 MHz core instruction rate
Single-cycle instruction execution, including SIMD opera-
tions in both computational units
Up to 660 MFLOPs peak and 440 MFLOPs sustained
performance
225-ball 17 mm 17 mm CSP_BGA package
Figure 1. ADSP-21161N Functional Block Diagram
ALU
MULT
DATA
REGISTER
FILE
(PEY)
16 u
40-BIT
BARREL
SHIFTER
BARREL
SHIFTER
ALU
DATA
REGISTER
FILE
(PEX)
16 u
40-BIT
TIMER
INSTRUCTION
CACHE
32 u
48-BIT
DAG1
8 u
4 u 32
PROGRAM
SEQUENCER
32
PM ADDRESS BUS
DM ADDRESS BUS
32
BUS
CONNECT
(PX)
PM DATA BUS
DM DATA BUS
64
64
CORE PROCESSOR
SPI PORTS (1)
SERIAL PORTS (4)
LINK PORTS (2)
DMA
CONTROLLER
5
16
20
4
IOP
REGISTERS
(MEMORY MAPPED)
CONTROL,
STATUS, &
DATA BUFFERS
I/O PROCESSOR
TWO INDEPENDENT
DUAL-PORTED BLOCKS
ADDR DATA DATA
DATA
ADDR
ADDR DATA ADDR
PROCESSOR PORT
I/O PORT
B
L
OC
K
0
B
L
O
C
K
1
DUAL-PORTED SRAM
HOST PORT
ADDR BUS
MUX
MULTIPROCESSOR
INTERFACE
DATA BUS
MUX
32
24
EXTERNAL PORT
6
12
8
JTAG TEST
AND EMULATION
GPIO
FLAGS
SDRAM
CONTROLLER
IOA
18
IOD
64
DAG2
8 u
4 u 32
MULT
S

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