32MHz X'tal for the nRF51822 main Clock

Question

Can I use 32MHz X'tal as the main clock for nRF51822/BLE instead of 16MHz (since it is usually smaller) ???

Ole Morten · Accepted Answer

Yes, you can use a 32 MHz crystal for the nRF51822 (and the nRF51422). 
 Unfortunately, there is a bug in the current revision of the chip (CA/C0), so you have to follow the procedure from the PAN-028 to make it work correctly. On later revisions, it should be sufficient to set the XTALFREQ register in the CLOCK peripheral. 
 Edit: A new PAN document has been released, available here , and also from the Download tab of the nRF51822 page .