A client-side GMII is provided with the core, which can be used as an internal interface for connection to an embedded Media Access Controller (MAC) or other custom logic in MAC mode. In PHY mode, the GMII/MII can be routed to device Input Output Blocks (IOBs) to provide an external (off-device) GMII/MII.
AMD Virtex ™ 7 devices support GMII at 3.3V or lower only in certain parts and packages. See the Virtex 7 Family home page . AMD Zynq ™ 7000 SoC, AMD Kintex ™ 7, and AMD Artix ™ 7 devices support GMII at 3.3V or lower.