PLB Address Map and Register Definitions

MAC MDIO Registers

The Tri-Mode Ethernet MAC has MDIO master capability. To access an MDIO register via the Ethernet MAC, construct the address as follows:

MDIO register address = PLB_base_address + 0x6000 + (MDIO_ADDRESS *8)

where MDIO_ADDRESS is a 10-bit binary address, constructed from the 5-bit MDIO Physical Address (PHYAD) and the 5-bit MDIO Register Address (REGAD) as follows:

MDIO_ADDRESS <= {PHYAD, REGAD}

See the Tri-Mode Ethernet MAC User Guide and IEEE802.3 for further MDIO information.

Ethernet AVB Endpoint User Guide

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UG492 July 23, 2010

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Xilinx UG492 manual MAC Mdio Registers