This part is a kind of semiconductor called ADM6993.
Function of this product has Fiber-to-Fast Ethernet Converters Product Brief.
Manufacturers : infineon
Image and pinout :
Some of the text within the PDF file :
DataSheet.in Product Brief ADM6993 Fiber-to-Fast Ethernet Converters The ADM6993 consists of Fiber to Fast Ethernet converters on a single chip, integrating two 10/100 Mbps MDIX TX/FX transceivers with a two-port 10/100M Ethernet L2 switch controller. Features include an OAM engine for the TS1000 protocol and a converter mode to meet demanding applications, such as Fiber-to-Ethernet media converters. The ADM6993 supports 16 entries of packet classification and marking or filtering for TCP/UDP port numbering, IP protocol ID and Ethernet Type. These can be configured either using the EEPROM or on-the-fly using a small, low-cost micro controller. On the media side, the ADM6993's 0 and 1 ports support auto-MDIX 10Base-T/100Base-TX and 100Base-FX as specified by the IEEE 802.3 committee thro [ ... ]