• Multiple interfaces to choose from: direct bus, indirect bus and SPI bus; • Supports hardware TCP / IP protocol stack, supporting TCP, UDP, ICMP, IGMP, IPv4, ARP, PPPoE. Up to 4 independent ports • Internal integrated 16KBYTE send and receive cache; • A variety of information output instructions, including RX, TX, Full / Duplex, Colision, Link, Speed; • Supports automatic polarity conversion (DMI / MDIX); • 3.3V power supply, IO signal compatible with 5V voltage; • Comes with network port, double row 2 * 14 2.0mm pin;