*Intergrated Fast Ethernet MAC, Phsical Chip and transceiver in one chip; *Supports 10Mb/s and 100 Mb/s N-Way Auto-negotiation operation; *Compliant to USB interface Version 1.0/1.1/2.0; *Full-Speed(12 Mb/s)USB Device; *Support all USB standard command; *Support Suspend/Resume detection Iogic; *Support 4 endpoints: 1.1control endpoint with maximum 8-byte packet; 2.1 bulk In endpoint with 64 bytes/packet; 3.1 bulk Out endpoint with 64 bytes/packet; 4.1 interrupt Inendpoint with 8 bytes/packet; *18Kbytes SRAM built in.(2K bytes for Tx buffer, and 16K bytes for Rx buffer); *Uses 93C46 to store recource configuration, ID parameter,etc; *Supports Full Duplex Flow Control(IEEE 802.3x)