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# 21603

7.1isp3 PAR, Virtex-4 RocketIO - Unroutable design error occurs when GT11CLK drives DCM

Description

7.1sp3 PAR fails to route when GT11CLK or GT11CLK_MGT drives DCM. The following message occurs in PAR: 

 

"IMPORTANT MSG: UNROUTABLE DESIGN; CHANGE PLACEMENT or EASE CONSTRAINTS"

Solution

When PAR instantiates the macro for DCM and DCM is connected to GT11CLK, PAR fails to route. 

This issue has been fixed in 7.1i Service Pack 3.

AR# 21603
Date Created 09/04/2007
Last Updated 05/19/2014
Status Archive
Type General Article