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AR# 33109

LogiCORE Ethernet 1000BASE-X PCS/PMA or SGMII v10.2 - MAP Place errors seen in some Spartan-6 Implementations

Description

When using the LogiCORE Ethernet 1000BASE-X PCS/PMA or SGMII v10.2 Core Spartan-6 example design, some implementations fail with a MAP Place error similar to the following:

ERROR:Place:392 - Can not place component gmii_data_bus1[5].delay_gmii_txd1

The UCF for the example is locking down the GMII bus to an I/O Bank and leaving the tools to auto-place. In the case of the failure, the tools are auto-placing illegally.

Solution

In a customer design, the I/Os should all be LOC-ed to legal locations as per the PCB layout, and this will not be an issue.

AR# 33109
Date Created 07/08/2009
Last Updated 12/15/2012
Status Active
Type General Article