The Microchip low power physical layer PHY transceiver with variable I/O voltage is compliant with the IEEE 802.3-2005 standards. It supports communication with an Ethernet MAC via a standard MII (IEEE 802.3u)/RMII interface. It contains a full-duplex 10-BASE-T/100BASE-TX transceiver and supports 10 Mbps (10BASE-T) and 100 Mbps (100BASE-TX) operation. It implements auto-negotiation to automatically determine the best possible speed and duplex mode of operation. HP Auto-MDIX support allows the use of direct connect or cross-over LAN cables.

Comprehensive flexPWR® technology
Flexible power management architecture
LVCMOS variable I/O voltage range +1.6 V to +3.6 V
Integrated 1.2 V regulator with disable feature
HP Auto-MDIX support
Ability to use a low cost 25 Mhz crystal for reduced BOM
32-pin QFN 5x5 mm Lead-Free RoHS Compliant package with MII and RMII
Extended commercial temperature range 0 °C to +85 °C
Industrial temperature range version available -40 °C to +85 °C