EXT_TIME_REF

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Interpret as EXT_TIME_REF

Description

Select a GPIO to use as a time reference, the source can be used to drive the low power clock at 32kHz, or to provide a 1ms tick to the timer, or provide a 1Hz tick to the timer. The tick selection is controlled by the POWMAN_TIMER register.

Fields

SOURCE_SEL	0 -> gpio12 1 -> gpio20 2 -> gpio14 3 -> gpio22
DRIVE_LPCK	Use the selected GPIO to drive the 32kHz low power clock, in place of LPOSC. This field must only be written when POWMAN_TIMER_RUN=0

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