AR# 40255

14.1 Timing Analyzer - Timing report does not reflect that phase shifts for the DCM


When I change the phase shift numbers for the Digital Clock Manager (DCM), I do not see the change in numbers for the setup and hold calculations for the clock.

Why does this not change?


If you are doing timing analysis against auto generated constraints, phase shift numbers are not part of the timing analysis.

When you do the analysis with the timing constraints for the design, then the phase shift numbers are taken into consideration when doing the timing analysis.
AR# 40255
日期 05/16/2012
状态 Archive
Type 设计咨询
Tools More Less