Hello,
Hope this would be useful:
https://yadi.sk/i/Cz0OUYt5dtuyp
This is full AR9331 datasheet. Including pinouts.
Very useful for finding additional GPIOs. i.e. For TP-Link MR3020 many additional IOs are easily available - GPIO1 (A77) is just floating and easily available on pad marked as R6 on board, and so on.
I don't know how long this link will survive - please download a copy for yourself.
(Last edited by Elektronik on 11 Jan 2015, 13:47)