UPGRADE YOUR BROWSER

We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

AR# 12133

5.1i Constraints Editor - I cannot create a NET TIG constraint on the same net for more than one TSid

Description

General Description:

I am unable to create a NET TIG constraint on the same net for more than one TSid.

For example:

TIMESPEC "TS_1" = FROM "FFS" TO "FFS" 20 ns;

TIMESPEC "TS_2" = FROM "FFS" TO "PADS" "TS_1" / 1.1;

NET clk TIG TS_1;

Constraints Editor does not allow me to create NET clk TIG TS_2; instead, it replaces the above constraint.

Solution

To work around this problem, manually manipulate the UCF to create the desired constraint.

This will be fixed in the next major software release (after 5.1i).

AR# 12133
Date Created 08/29/2007
Last Updated 01/18/2010
Status Archive
Type General Article