3.2.3.2.2 PLCK

The PLCK bit is a read-only bit that indicates if the IRT operation is disabled. If the PLCK bit = ‘1’, access to IRT regions is disabled and the IRTCTRL and IRTSTAT registers are read-only. If the PLCK bit = ‘0’, the IRT partition is not locked and is accessible. IRT permissions are still enabled. The PLCK bit is automatically managed by the device hardware and the IRT execution state. Because the PLCK bit only updates after the jump to non-IRT code, it cannot be used as a status bit inside the IRT. The DONE bit can be checked to verify the request has been registered correctly. The DONE bit can be set by code but is only cleared on Reset.