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AR# 31761

11.1 Partitions - GT11 cannot be placed in a partition

Description

When I add a GT11 to a partition, I receive errors similar to the following: 

 

ERROR:LIT:355 - GT11 symbol "serdes_out_01/GT11_CUSTOM_INST" (output 

signal=serdes_out_01/RXCOMMADET_OUT) output ports RXMCLK, RXPCSHCLKOUT, or 

TXPCSHCLKOUT can not drive OBUF, OBUFTDS, or OBUFDS. 

ERROR:LIT:436 - RXPCSHCLKOUT / TXPCSHCLKOUT pins of GT11 symbol 

"serdes_out_01/GT11_CUSTOM_INST" (output signal=serdes_out_01/RXCOMMADET_OUT) 

are reserved and cannot be connected to active signals.

Solution

Partition boundaries prevent optimizations across boundaries. This is preventing the correct optimization from occurring across the boundaries and causes problems when a GT11 is used in a partition.  

 

To work around these errors, do not place the GT11 in a partition.

AR# 31761
Date Created 11/07/2008
Last Updated 05/21/2014
Status Archive
Type General Article