VB Controller Chip Pinout (BU3613F)

     Data -	- Unknown
L Trigger -	- Unknown
R Trigger -	- Reset (Latch)
   R Down -	- Clock
  R Right -	- L Down
     R Up -	- L Left
        A -	- Start
        B -	- Select
   R Left -	- L Right
      GND -	- L Up


Notes:

All buttons short the pin from the chip to ground
There are 100 Ohm resistors on Clock, Data, and Latch to the pins on the connector
The unknown pins may the low battery sensor (pin 19) and the controller signature bit (pin 20) (Those are just guesses, I'll have to test it when I get time)