Command Register
| HFCLKSEL | HFCLK Select 1 (HFRCO): Select HFRCO as HFCLK. 2 (HFXO): Select HFXO as HFCLK. 3 (LFRCO): Select LFRCO as HFCLK. 4 (LFXO): Select LFXO as HFCLK. 5 (USHFRCODIV2): Select USHFRCO divided by two as HFCLK. |
| CALSTART | Calibration Start |
| CALSTOP | Calibration Stop |
| USBCCLKSEL | USB Core Clock Select 2 (LFXO): Select LFXO as HFCORECLKUSBC. 3 (LFRCO): Select LFRCO as HFCORECLKUSBC. 4 (USHFRCO): Select USHFRCO as HFCORECLKUSBC. |