12.6.3.3 Selecting a Clock Source for the Generic Clock
When changing a generic clock source by
writing to CLKCTRL.GEN, the generic clock must be disabled before being re-enabled with the
new clock source setting. This prevents glitches during the transition:
- Write
CLKCTRL.CLKEN=
0 - Assert that CLKCTRL.CLKEN reads
'
0' - Change the source of the generic clock by writing CLKCTRL.GEN
- Re-enable the generic clock by
writing CLKCTRL.CLKEN=
1