C.1.10.5 MII Power

A regulated 5-VDC (+/- 5%) voltage is supplied to the PHY IC over the load range of from 0 to 750 mA. A 2-amp overcurrent protection circuit is provided by a polymer-based resettable fuse to the MII supply voltage.

MII-to-AUI connection to a 10-Mbps medium attachment unit requires a supplemental power source to meet the AUI power supply requirements. The MII-AUI converter provides the necessary supplemental power.