Does anyone know the pinout of this chip? Answered

Hello fellow Arduino-ists I've got an old laser mouse (DELL M-UVDEL1) and I want to get my arduino uno or mega (I've got both) to read the data it sends out and print it to the serial monitor.
First, can anyone tell me the pinout of the chip on the following picture: http://imgur.com/oy4si, bakside: http://imgur.com/B4sQM, then I think I can work from there, unless anyone wants to help me even more by posting an example code, that would be great