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