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# 15481

5.1i Timing Analyzer - A TSI report that lists the sources for an OFFSET IN constraint differs from TRCE


General Description:

When I run the TSI report from Timing Analyzer, the following information is reported:

Timing constraint: OFFSET = IN 20 nS BEFORE COMP "clk"


Section 1: Sources and destinations covered exclusively by the current constraint.


I$16 I$17 I$8


ff1d (Timegroup(s): clk) ff1s (Timegroup(s): clk)

ff1s (Timegroup(s): clk) ff2d (Timegroup(s): clk)

ff2s (Timegroup(s): clk) ff2s (Timegroup(s): clk)

The source and destination names do not match up with TRCE.


This problem is fixed in the latest 5.1i Service Pack, available at:


The first service pack containing the fix is 5.1i Service Pack 1.

AR# 15481
Date Created 09/03/2007
Last Updated 01/18/2010
Status Archive
Type General Article