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AR# 44162

13.2 Timing/Constraint - How to apply ENABLE and DISABLE constraints locally?

Description

How to apply ENABLE and DISABLE constraints locally?

Solution

Currently, the ENABLE and DISABLE constraints can be only appliedglobally in UCF. However,in PCF theycan be applied locally to a specific TIMEGRP. The PCF syntax for them is as follows:

TIMEGRP "name" ENABLE=timing_delay_name ;
TIMEGRP "name" DISABLE=timing_delay_name ;

Example:

TIMEGRP "my_timegrp" ENABLE=Trck;
AR# 44162
Date Created 10/07/2011
Last Updated 12/15/2012
Status Active
Type General Article
Tools
  • ISE Design Suite - 13.2