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AR# 23189

8.1i Virtex-II Pro X Map: "MapLib:555 - BREFCLKPIN pin of "mgt_7" is not connected to IPAD"


My Virtex-II Pro X design has multiple GT10 instantiations which share a BREFCLK input. When I run MAP, I receive the following error on all but one instance of my GT10s. 


ERROR:MapLib:555 - BREFCLKPIN pin of transmitter symbol "mgt_7" is not connected to an IPAD. 

ERROR:MapLib:555 - BREFCLKNIN pin of transmitter symbol "mgt_7" is not connected to an IPAD. 


The same BREFCLK pad drives all the instances, so this error seems incorrect. How do I work around this?


The problem is related to tracking the net through hierarchy. This will be fixed in a future software release.  


To work around it in the current software, either move all your GT10 components to one level of hierarchy or use the -ignore_keep_hierarchy switch in MAP.

AR# 23189
Date Created 09/04/2007
Last Updated 05/20/2014
Status Archive
Type General Article