This part is a kind of semiconductor called AX88180.

Function of this product has High-Performance Non-PCI 32-bit 10/100/1000M Gigabit Ethernet Controller.

Manufacturers : ASIX

Image and pinout :

Some of the text within the PDF file :

AX88180 High-Performance Non-PCI 32-bit 10/100/1000M Gigabit Ethernet Controller Document No: AX88180/V1.4 Features ● ● High-performance non-PCI local bus 16/32-bit SRAM-like host interface Support big/little endian data bus type Large embedded SRAM for packet buffers 32K bytes for receive buffer 8K bytes for transmit buffer Support IP/TCP/UDP checksum offloads Support interrupt with high or low active trigger mode Highly-integrated Gigabit Ethernet controller Compatible with IEEE802.3, 802.3u, and 802.3ab standards Support 10/100/1000Mbps data rate Support full duplex operation with 1000Mbps data rate Support full and half duplex operations with 10/100Mbps date rate Support 10/100/1000Mbps N-way Auto-negotiation operation Support IEEE 802.3x flow control for full-duplex operation [ ... ]

MYG14K201 PDF Datasheet Download