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AR# 32953

11.3 Timing Analysis - Not correctly using attribute CLKFX_MD_MAX in the Clock Uncertainty equation

Description

The attribute CLKFX_MD_MAX allows the user to specify the maximum ratio of M & D values which can be dynamically programmed so that timing analysis may apply this to the PERIOD constraint's Clock Uncertainty value in the timing report. In 11.2, this attribute is not being used and the specified M & D values are always applied. 

 

When is this going to be fixed?

Solution

This is a known issue. This is fixed in 11.4.

AR# 32953
Date Created 06/25/2009
Last Updated 05/23/2014
Status Archive
Type General Article