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AR# 19325

LogiCORE 10 Gigabit Ethernet MAC v4.0 - Problems with MDIO Access / MDIO_IN should be wired to '1', not '0' in Demo Testbench

Description

General Description: 

When the 10 Gigabit Ethernet MAC v4.0 core is implemented with the XAUI interface, the demo testbench (demo_tb.v or demo_tb.vhd) incorrectly has "mdio_in" tied to '0'. In turn, this will not allow access through the MDIO interface.

Solution

In order for the internal MDIO interface between MAC and XAUI to operate, "mdio_in" must be wired to '1'. Therefore, change the assignment of "mdio_in" from '0' to '1' in the demo testbench to correct this.

AR# 19325
Date Created 09/03/2007
Last Updated 05/16/2014
Status Archive
Type General Article