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Re: [oc] CRC32 speed

Johnsonw10 wrote:
> Does anybody know how fast 32-bit CRC-32 logic can run on an FPGA? I'd
> appreciate any info so that I can decide to use an 8-bit CRC-32 or a 32-bit
> CRC-32.

In Virtex-2, we get over 200MHz.  So you can do about 6.4Gbps with 32
bit, or about 1.6Gbps with 8 bit.

Or > 10Gbps with 64 bit.  Or even faster with wider buses, because the
part of the CRC calculation that XORs the bus width down to 32 bits
isn't in the feedback path and can be pipelined as much as you want.

You might like to read this news:comp.arch.fpga thread:
http://groups.google.com/groups?threadm=3c0b6477.24735678%40netnews.agilent.com

Regards,
Allan.
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