AR# 15126


7.1i Timing - Negative external hold times are rounded to 0 (zero) for a Virtex-E device


General Description:

When I manually calculate the external hold time for my Virtex-E device, a negative hold time value is reported. However, the timing analysis rounds all of my negative hold times to zero.


The external negative hold times are more optimistic than they should be.

AR# 15126
日期 01/18/2010
状态 Archive
Type 综合文章
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