RAlink SoC found inside an AT&T femtocell.

Googling the part number on the die (RT3052) shows http://www.mediatek.com/_en/01_products/04_pro.php?sn=1045. The part is most likely a relabeled/fused RT3052:

• 2.4 GHz 802.11n radio (2x MIMO)
• 384 MHz MIPS 24KEc CPU, 32KB I-side and 16KB D-side cache
• 5-port 10/100 switch including PHYs
• USB OTG
• Gigabit Ethernet MAC (RGMII to off-die PHY)

Package

Die

Map