1.Integrated fast Ethernet MAC, physical chip and transceiver in one chip 2.Supports 10Mbps and 100Mbps N-Way auto-negotiation operation patible with USB 1.0/1.1/2.0 4.Full speed (12Mbps) USB device 5.Supports all USB standard commands 6.Supports suspend/resume detection logic 7.Supports 4 endpoints - Control endpoint with maximum 8 bytes/packet - Bulk in endpoint with 64 bytes/packet - Bulk out endpoint - Interrupt in endpoint with 8 bytes/packet 8.18k bytes SRAM built-in (12k bytes for Tx buffer, and 16k bytes for Rx buffer) 9.Half/full duplex 10/100Mbps operation 10.Supports full duplex flow control (IEEE 802.3x)