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AR# 11255

3.1i Virtex-II PAR - Router does not always route the differential clock inputs correctly.

Description

Keywords: clock, differential, router, routed

Urgency: Standard

General Description:
PAR fails to route differential clock inputs correctly. (A specific case seen used IBUFGDS_LVDS_33 to feed the DCM CLKIN pin, and the router did not use the correct routing resources.)

Solution

This problem is fixed in the latest 3.1i Service Pack, available at:
http://support.xilinx.com/support/techsup/sw_updates.
The first service pack containing the fix is 3.1i Service Pack 8.
AR# 11255
Date Created 08/29/2007
Last Updated 10/21/2008
Status Archive
Type General Article