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AR# 18039

6.1i Constraints Editor - When I try to create an OFFSET IN constraint from the Advanced tab, no registered time groups appear in the Pad-to-Setup window

Description

General Description:

When I attempt to create an OFFSET IN constraint from the Advanced tab for the Pad-to-Setup dialogue window, no registered time groups are available; I have created several PERIOD constraints, but none of them appear.

Solution

This problem has been fixed in the latest 6.1i Service Pack, available at:

http://support.xilinx.com/xlnx/xil_sw_updates_home.jsp
The first service pack containing the fix is 6.1i Service Pack 2.

You can also work around this problem by typing the registered group into the OFFSET constraint by hand using a text editor.

Another way to work around this issue is to create a time group based upon INST TNM groups, which will appear in the registered time group listing of the OFFSET IN dialog window.

AR# 18039
Date Created 09/03/2007
Last Updated 01/18/2010
Status Archive
Type General Article