This part is a kind of semiconductor called RT3052F.

Function of this product has (RT3050 / RT3052) high performance 384MHz MIPS24KEc CPU core.

Manufacturers : Ralink

Image and pinout :

Some of the text within the PDF file :

RT3050/52 Datasheet Preliminary Revision August 14, 2008 Application   802.11 b/g/n AP/Router Dual Band Concurrent Router • NAS • iNIC  Support 16/32-bit SDR SDRAM (up-to 64M bytes)  SDRAM data [31:16] sre pins shared with GPIO  Support boot from 8/16-bit parallel NOR type Flash The RT3052 SOC combines Ralink’s 802.11n draft compliant 2T2R MAC/BBP/RF, a high performance 384MHz MIPS24KEc CPU core, 5-port integrated 10/100 Ethernet switch/PHY, an USB OTG and a Gigabit Ethernet MAC. With the RT3052, there are very few external components required for 2.4GHz 11n wireless products. The RT3052 employs Ralink 2nd generation 11n technologies for longer range and better throughput. The embedded high performance CPU can process advanced applications effortlessly, such as rou [ ... ]

RT3052F PDF Datasheet Download