PowerPC vs. TI DSP vs. IA32 vs. MIPS vs. H8 ...

Sep 16, 2003 2 Replies
E

Hi All,



I need to select a platform for a control project. I need suggestions from your guys. Here is the some requirements for the project:


1) Programming in c
2) Two channels of AD > 12bit
3) Two or more quadrature decoders (single ended)
4) > 1 channel of PWM output
5) floating point performance ~ 500MHZ P3
6) Small, reliable and takes only 12V power supply
7) ~32MB DRAM (I really don't know how much my program will require, how to estimate this?)
8) ~32MB FLASH prefer also a VGA display for a color flat panel display. Multimedia Card (or compact flash) interface.

Thanks in advance.



Everett


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J

For a control system? Sounds way bigger than most things I have seen...

Look for the device set first, then select the actual chip/board.

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S

Take this as a friendly recommendation, not an insult, please! Use an industrial PC and plug in I/O cards. Your control project sounds like one (or very few) of a kind. The embedded architectures you list might be able to fullfil you perfoemance needs but the best I/O you will find on much slower processors than what you are looking for. As an example, the C167CS form Infineon could be used for most of your I/O needs but it iss about a factor 100 or more away from your floating point performance requirements. Also your memory requirements are quite significant. Do yourself a favor and select something that is easy to program.

Cheers, Schwob

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