Commercial Grade
SHARC DSP Microcomputer
a
ADSP-21061/ADSP-21061L
Dual data address generators with modulo and bit-reverse
addressing
Efficient program sequencing with zero-overhead looping:
single-cycle loop setup
IEEE JTAG Standard 1149.1 test access port and on-chip
emulation
32-bit single-precision and 40-bit extended-precision IEEE
floating-point data formats or 32-bit fixed-point data
format
240-lead MQFP package, thermally enhanced MQFP, 225-ball
plastic ball grid array (PBGA)
Lead (Pb) free packages. For more information, see Ordering
Guide on Page 52.
SUMMARY
High performance signal processor for communications,
graphics, and imaging applications
Super Harvard Architecture
Four independent buses for dual data fetch, instruction
fetch, and nonintrusive I/O
32-bit IEEE floating-point computation units—multiplier,
ALU, and shifter
Dual-ported on-chip SRAM and integrated I/O peripherals—a
complete system-on-a-chip
Integrated multiprocessing features
KEY FEATURES—PROCESSOR CORE
50 MIPS, 20 ns instruction rate, single-cycle instruction
execution
120 MFLOPS peak, 80 MFLOPS sustained performance
CORE PROCESSOR
DUAL-PORTED SRAM
INSTRUCTION
TIMER
JTAG
TWO INDEPENDENT
DUAL-PORTED BLOCKS
7
CACHE
TEST AND
EMULATION
32 ϫ 48-BIT
PROCESSOR PORT
ADDR DATA
ADDR
I/O PORT
ADDR
ADDR
DATA
DATA
DATA
DAG1
DAG2
PROGRAM
SEQUENCER
8 ϫ 4 ϫ 32 8 ϫ 4 ϫ 24
EXTERNAL
PORT
IOD
48
IOA
17
24
PM ADDRESS BUS
32
48
ADDR BUS
MUX
DM ADDRESS BUS
32
MULTIPROCESSOR
INTERFACE
48
40/32
PM DATA BUS
DM DATA BUS
BUS
CONNECT
(PX)
DATA BUS
MUX
HOST PORT
S
DATA
REGISTER
FILE
IOP
4
DMA
CONTROLLER
REGISTERS
(MEMORY
MAPPED)
6
6
BARREL
SHIFTER
16 ϫ 40-BIT
MULT
ALU
CONTROL,
STATUS AND
DATA BUFFERS
SERIAL PORTS
(2)
I/O PROCESSOR
Figure 1. Functional Block Diagram
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