19.8.1 Control A
| Name: | CTRLA |
| Offset: | 0x00 |
| Reset: | 0x00 |
| Property: | PAC Write-Protection |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| CKSEL | |||||||||
| Access | R/W | ||||||||
| Reset | 0 |
Bit 2 – CKSEL Main Clock Select
| Value | Description |
|---|---|
| 0 | The GCLKMAIN clock is selected for the main clock. |
| 1 | The DFLLULP clock is selected for the main clock. |