[81] GPIO: PIN_CNF is not retained when in debug interface mode

This anomaly applies to IC Rev. Rev 1, build codes QFAA-B00, QFAB-B00, CIAA-B00.

It was inherited from the previous IC revision Engineering C.


GPIO pin configuration is reset on wakeup from System OFF.


The system is in debug interface mode.


GPIO state unreliable until PIN_CNF is reconfigured.