ADSP-21262 Datasheet

  • ADSP-21262

  • SHARC? Embedded Processor

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  • 49页

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SHARC
Processor
ADSP-21262
SUMMARY
High performance 32-bit/40-bit floating-point processor
optimized for high precision signal processing
applications
The ADSP-21262 SHARC DSP is code compatible with all
other SHARC DSPs
Single-Instruction Multiple-Data (SIMD) computational archi-
tecture鈥攖wo 32-bit IEEE floating-point/32-bit fixed-
point/40-bit extended precision floating-point computa-
tional units, each with a multiplier, ALU, shifter, and
register file
High bandwidth I/O鈥擜 parallel port, SPI port, six serial
ports, digital audio interface (DAI), and JTAG
DAI incorporates two precision clock generators (PCGs), an
input data port (IDP) which includes the parallel data
acquisition port (PDAP), and three programmable timers,
all under software control through the signal routing unit
(SRU)
On-chip memory鈥?M bits of on-chip SRAM and a dedicated
4M bits of on-chip mask-programmable ROM
Six independent synchronous serial ports provide a variety
of serial communication protocols including TDM and I
2
S
modes
The ADSP-21262 is available with a 200 MHz core instruction
rate. For complete ordering information, see
Ordering
Guide on Page 44.
CORE PROCESSO R
INSTRUCTION
CACHE
32 48-BIT
DUAL PORTED MEMORY
BLOCK 0
SRAM
1 MBIT
ROM
2 MBIT
DUAL PORTED MEMORY
BLO CK 1
SRAM
1 MBIT
ROM
2 MBIT
TIMER
8
DAG1
4 32
8
DAG2
4 32
PROGRAM
SEQUENCER
ADDR
DATA
ADDR
DATA
32
PM ADDRESS BUS
DM ADDRESS BUS
64
64
PM DATA BUS
DM DATA BUS
DMA CO NTROLLER
22 C H A NN E LS
32
IOD
(32)
IOA
(18)
4
GPIO FLAGS/
IRQ/TIMEXP
16
3
C ON TR OL/GP IO
PX REGISTER
PROCESSING
EL EMENT
(PEX)
PROCESSING
ELEMENT
(PEY)
4
SPI PO RT (1)
A D D RES S/
D A TA BUS / GPIO
6
JTAG TEST & EMULATION
20
SIGNAL
ROUTING
UNIT
SERIAL PORTS (6)
INPUT
DATA PORTS (8)
PARALLEL DATA
ACQUISITION PORT
PRECISI ON CLO CK
GENERATORS (2)
3
TIMERS (3)
IOP
REGISTERS
(MEMORY MAPPED)
CO NTROL,
STATUS,
DATA BUFFERS
PARALLEL
PORT
S
DIGITAL AUDIO INTERFACE
I/O PROCESSOR
Figure 1. Functional Block Diagram
SHARC and the SHARC logo are registered trademarks of Analog Devices, Inc.
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703
漏 2004 Analog Devices, Inc. All rights reserved.

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