KS8721B/BT 2.5V 10/100BasTX/FX MII Physical Layer .
KS8721BT - 2.5V 10/100BasTX/FX MII Physical Layer Transceiver
KS8721B/BT 2.5V 10/100BasTX/FX MII Physical Layer Transceiver Rev. 2.3 General Description Operating at 2.5 volts to meet low voltage and low power r.