MATLAB EMBEDDED IDE LINK 4 - FOR USE WITH ANALOG DEVICES VISUALDSP PLUSPLUS Manuale Utente Scaricare il pdf (Pagina 25)

24 DSP Selection Guide

SHARC

DSP Family Benchmarks

Just looking at the cycle time, clock speed,

MIPS or MFLOPS of a DSP cannot give an

accurate indication of the true performance of

the processor. Benchmarks are important in that

they show how a particular DSP performs in

the context of an application. The smaller the

benchmark number, the quicker the algorithm

execution. If a DSP can perform the task quick-

er, the processor can perform more tasks in a

given amount of time.

SHARC DSPs are the highest performance

32-bit DSPs available. These processors excel

at IEEE floating-point math, 32-bit fixed-point

math, and extended precision 40-bit floating-

point math.

The ADI 32-bit DSP family offers a maximum

performance for minimum system cost, while

dramatically shortening product development

time and critical time-to-market.

TMS320C6701

TMS320C6711

TMS320C6712

ADSP-21065L

ADSP-21160N

ADSP-21161N

DSP

Processor

167 MHz

150 MHz

100 MHz

66 MHz

95 MHz

100 MHz

Instruction

Rate

Instruction

Cycle Time

19, 875

18, 221

10,778*

Number

of Cycles

0.12 ms

0.13 ms

0.19 ms

0.27 ms

0.10 ms

0.09 ms

Total FFT

Time

6 ns

6.7 ns

10 ns

15 ns

11 ns

10 ns

1024-Point Complex FFT (in place)

32-BIT Floating-Point DSPs

Clock Speed

Instruction Cycle Time

MFLOPS Sustained, Peak

MOPS (32-bit Fixed-Point)

Sustained, Peak

1024-Point Complex FFT

(Radix 4, with Digit Reverse)

FIR Filter (per Tap)

IIR Filter (per Biquad)

Matrix Multiply

(3x3) x (3x1)

(4x4) x (4x1)

Divide (y/x)

Inverse Square Root

66 MHz

15 ns

132, 198 MFLOPS

0.27 ms (SISD)

100 MHz

10 ns

400, 600 MFLOPS

0.09 ms*

15 ns

60 ns

135 ns

240 ns

90 ns

135 ns

5 ns*

20 ns*

45 ns*

80 ns*

60 ns*

90 ns*

Specification Source: TI, website www.ti.com

* These benchmarks provide single channel extrapolation of measured dual channel processing performance.

http://www.analog.com/dsp

ADSP-21065LBenchmarks ADSP-21161N

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MATLAB EMBEDDED IDE LINK 4 - FOR USE WITH ANALOG DEVICES VISUALDSP PLUSPLUS Manuale Utente Pagina 25

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