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Discussion Groups | Analog Devices DSPs | Image - Video Processing Platform
Technical discussions related to Analog Devices DSPs (including Blackfin, TigerSHARC, SHARC and ADSP-21xx DSPs).
Image - Video Processing Platform - Jaime Andres Aranguren Cardona - Jul 2 7:17:00 2001
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Hi everybody: I am getting involved on a Video - Image Processing project at the University, and we have at our disposal the following DSP Kits from Analog Devices. 1 ADSP-21xx EzLite And also the ADDS-218x-ICE 2.5V and the ADDS-MTN-ICE, plus all the updated and licensed software for development. I would like somebody with expertise on the topic give some guidelines on how to chose the right processor with the right additional horsepower we would need for such a project. We think the most important part will be concerning storage and processing speed. Thanks a lot! Jaime Andrés Aranguren Cardona |
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Re: Image - Video Processing Platform - Clifford van Dyk - Jul 2 12:47:00 2001
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Hi Jaime The ADSP-21xxx series (e.g. 21060, 21065, 21160) are 32-bit floating + fixed point processors, whereas the 21xx series are fixed point only. This has implications on how easy it is to write efficient code for the processor. For e.g., using a fixed point processor, one would have to be careful not to saturate registers when performing multiplications (e.g. filtering applications). The general rule seems to be: fixed point processors are cheaper, and less power hungry, so they should be considered if you plan on mass-production / low power consumption. Otherwise, floating point processors are easier to use (less development time). A top-of-the range fixed point processor can run at 600MHz, vs. a top-of-the-range floating point processor at 80-100MHz, but it may need to perform extra operations to prevent registers from saturating when, for example, multiplying two large numbers, so MHz is not the only concern. The ADSP-21160 is the most powerful floating point processor of those that you mentioned, with 4Mbits of internal memory - >= all the others you mentioned. Cheers, Clifford Jaime Andres Aranguren Cardona wrote: > > Hi everybody: > > I am getting involved on a Video - Image Processing project at the > University, and we have at our disposal the following DSP Kits from > Analog Devices. > > 1 ADSP-21xx EzLite > 1 ADDS-2189M EzLite > 1 ADDS-2106x EzLite > 2 ADDS-21160M EzLite > 1 ADDS-21165L EzLab > > And also the ADDS-218x-ICE 2.5V and the ADDS-MTN-ICE, plus all the > updated and licensed software for development. > > I would like somebody with expertise on the topic give some guidelines > on how to chose the right processor with the right additional > horsepower we would need for such a project. We think the most > important part will be concerning storage and processing speed. > > Thanks a lot! > Jaime Andrés Aranguren Cardona > > > ----------------------------------------------------------------------- > > /groups.php3 > Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. | |||||||
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