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DSP Selection Guide 27

Blackfin

DSP Family

High Performance, Low Power Dual-MAC, 16-Bit Fixed-Point DSP

Dynamic Power Management

Blackfin DSP Dynamic Power Management per-

mits system designers to dynamically vary both

the operating frequency and voltage of the DSP.

This capability enables the DSP power con-

sumption characteristics to be optimized to the

individual algorithm being executed. Transitions

between various performance levels can be

implemented under user control resulting in sig-

nificantly lower system power consumption and

longer battery life for handheld devices.

Superior Code Density

Blackfin DSPs provide excellent code density by

employing a variable length instruction encoding

scheme. The more frequently used instructions

such as data moves are encoded as compact 16-

bit words. The more challenging DSP and math

operations are encoded as 32-bit double words.

Additionally, a 64-bit multi-operation packet

consisting of one 32-bit and two 16-bit words

can be constructed for a variety of instruction

combinations. This merging of CISC and RISC

instruction encoding formats enables excellent

code density while retaining high system perfor-

mance. Blackfin DSPs also support both 16-bit

and 32-bit external memory arrays with no

memory alignment restrictions.

Video Instructions

Blackfin DSPs integrate quad 8-bit video ALUs

that facilitate the processing of arrays of 8-bit

data – the common word size of red-green-blue

pixel processing algorithms. The Blackfin DSP

instruction set architecture also includes specific

pixel manipulation instructions. These instruc-

tions enable the optimized execution of algo-

rithms such as MPEG-2, MPEG-4, and JPEG

compression and decompression. Implementing

video algorithms in software allows OEMs to

adapt to evolving standards and new functional

requirements without hardware changes.

Roadmap to Maximum Performance

The current Blackfin DSP family combines per-

formance of 300 MHz/600 MMACs with a

robust and complete set of peripherals. Future

product offerings will extend this performance

base to 1 GHz/2 GMACs with expanded periph-

eral functionality. Blackfin DSP technology will

also be leveraged to provide application specific

solutions for a variety of rapidly growing verti-

cal market segments including

wired/wireless communica-

tions and digital imaging.

These complete solutions com-

bine optimized hardware com-

ponents with validated soft-

ware components.

Ultra

Low Power

Ultra High

Performance

1 GHz

System Integration

300 MHz

ADSP-21532

ADSP-21535

SoftFone

Low Power

ADSP-215xx

General

Purpose Broadband Wireless

Media

Products

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