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AR# 4519

xact 6.0.1: Discrepancy between Timing Analyzer and Xdelay

Description

General Description: whenever there is latch in the path, path propagation delay will be different under timing analyzer and Xdelay reports.

Solution

This is fairly common. The

reason for this is PPR is using its own algorithm to generate the

delays, and xdelay is using a different algorithm to generate the

delays. There is no way to fix the discrepancies. However, we have been

told that xdelay is the tools to believe. It is generating the correct

values.

AR# 4519
Date Created 08/31/1998
Last Updated 01/18/2010
Status Archive
Type General Article