W5100 Hardwired TCP/IP Embedded PHY chip.
specifications:
- Supports TCP, UDP, IPv4, ICMP, IGMP, ARP, PPPoE.
- Supports 4 independent channels simultaneously.
- High throughput, 20 Mbps @ ARM7.
- Full-duplex mode.
- Interface & MCU SPI bus.
- 16 Kbyte data buffer (embedded).
- 10/100 Base-T (auto), MAC / PHY embedded.
- 3.3 V power supply, I / O 5V.