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AR# 24969

9.1i Constraints Editor - Timegrp name is missing from OFFSET constraint

Description

When I create a timegrp-based OFFSET IN constraint, the timegrp name is missing in the UCF. The UCF contains the following:

TIMEGRP "" OFFSET = IN 20 ns VALID 30 ns BEFORE "SRC_DDR_EDGE_RxClock" TIMEGRP "tgrp_src_ddr_edge_rising" LOW;

The UCF should contain the following:

TIMEGRP "TGRP_PADs" OFFSET = IN 20 ns VALID 30 ns BEFORE "SRC_DDR_EDGE_RxClock" TIMEGRP "tgrp_src_ddr_edge_rising" LOW;

Solution

This problem has been fixed in the latest 9.1i Service Pack available at:

http://www.xilinx.com/xlnx/xil_sw_updates_home.jsp
The first service pack containing the fix is 9.1i Service Pack 3.

AR# 24969
Date Created 09/04/2007
Last Updated 01/18/2010
Status Archive
Type General Article