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AR# 20999

LogiCORE xFFT v3.1 Patch - I cannot reach the speeds listed in the Data Sheet for Virtex-4

Description


General Description: 
I cannot reach the speeds listed in the Data Sheet for Virtex-4. Why?

Solution


The numbers in the Data Sheet are incorrect. These numbers were run on unrouted designs, and did not include net delays. A new version of the core is being developed that will be faster. 
 
Please see (Xilinx Answer 21453).
AR# 20999
Date Created 09/04/2007
Last Updated 05/19/2014
Status Archive
Type General Article