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AR# 5554

1.5i Virtex PAR - Router is routing backbone net to IOB CLK pins incorrectly.

Description

The router is routing a backbone clock net to the IOB CLK pins incorrectly. It is routing off of vertical long lines instead of the backbone horizontal. This increases the skew to the IOBs by about 3.0ns or 50% of the total delay.

Solution

A fix for this problem is included in the 1.5i Service Pack 1. For details
on this Service Pack see http://www.xilinx.com/techdocs/5514.htm
AR# 5554
Date Created 08/31/2007
Last Updated 10/21/2008
Status Archive
Type General Article