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AR# 44162

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

描述

How to apply ENABLE and DISABLE constraints locally?

解决方案

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
日期 12/15/2012
状态 Archive
Type 综合文章
Tools
  • ISE Design Suite - 13.2
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