10.4.2.5 Generic Clock After Reset

GCLK will provide a default clock after a Device Reset. This means that both a clock source and a generator need to be configured and enabled automatically as the device starts up again.

The following table shows the Generator Control register (GENCTRL[n]) value after a Device Reset:

Table 10-4. GENCTRL[n] Reset Value after a Device Reset
GCLK GeneratorReset Value after a Device Reset
Generator 0 0x00000105
All other Generators0x00000000
Refer to the GENCTRL[n] register for details on the values after reset and which bits and bit fields are affected.

The following table shows the Peripheral Channel Control registers (PCHCTRL[n]) and the function of the Write Lock bit (WRTLOCK) after a Device Reset:

Table 10-6. Reset Values After a User Reset or a Power Reset
ResetWRTLOCK (before reset)PCHCTRLm.GENPCHCTRLm.CHENWRTLOCK (after reset)
Power Reset 0 0x0 0x0 0x0
1 0x0 0x0 0x0
User Reset 0 0x0 0x0 No change
1 No changeNo changeNo change

Refer to the PCHCTRL[n] register for details on the values after reset and which bits and bit fields are affected.