Newbie looking for multiported-RAM to interface to a Spartan-III

Dec 31, 2004 1 Replies
S

Hi,



I'm working on a buffer-type application using a Spartan-III that requires six bytes of data to be read and written to memory at rates of about 100MHz. I was wondering two things:


1) Whether a Spartan-III is fast enough to send the required timing signals for a multiported memory at this speed. If not, I'll probably have to look into spending more money on a Virtex.
2) What companies sell multiported ram? Any suggestions will help. Regards, Jack Mehinsky
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M

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The S3 should have no problem 100 MHz, even if it were DDR. S3's are more or less comparable to Virtex 2's in terms of capability.

Assuming you have already verified that you can't fit your data in the FPGA block RAM (even going with a really large Spartan III maybe cheaper, lower power, and smaller, than a small S3 + external RAM), the list is quite long and varies depending on exactly what style of multiport you desire.

This looks to be a pretty complete list, although I wouldn't necessarily trust the classification of one vendor into one memory type like they have:

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Have fun,

Marc

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