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# 22216

7.1 Virtex-4 MAP - "WARNING:PhysDesignRules:729 - Useless IOBDELAY_VALUE set"


General Description: 

When running 7.1i MAP for a design containing Virtex-4 IDELAY, I receive the following warning message: 


WARNING:PhysDesignRules:729 - Useless IOBDELAY_VALUE set. Comp CLK1_IDELAY_O/CLK1_IDELAY_INST is using the Delaychain with a delay type DEFAULT but the IOBDELAY_VALUE is set. This value will be ignored and the default value will be used. 


What does this mean?


This DRC issue will be fixed in version 8.2i so that no warning message will be printed for the default value of 0. Meanwhile, the message can be safely ignored. The default value of 0 will be used.

AR# 22216
日付 05/19/2014
ステータス アーカイブ
種類 一般