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[Discuss-gnuradio] FPGA numbers
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From: |
David Carr |
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Subject: |
[Discuss-gnuradio] FPGA numbers |
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Date: |
Thu, 23 Jun 2005 19:43:07 -0500 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.7) Gecko/20050421 MultiZilla/1.6.4.0b |
Just curious, how much logic does each DDC (cordic, CIC, decimator)
require? I'm trying to estimate how many would fit in an XC3S400. I
think that currently the code uses the "free cordic multiply" with a
cordic for each channel. Could we instead take the sin and cos off of a
single cordic and use the hardware 18x18 multipliers in the Spartan 3?
Would that be a savings?
-David Carr
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