At power-on-reset (POR), or global warm reset, both MPU cores are powered on. Software can determine the appropriate power mode for both MPU cores and program the MPU_PRCM accordingly.
There are three types of power transitions:
- Power transitions that do not involve the local or global PRCM module
- MPU_Cx transition to WFE/ON - corresponds to line 2 of Table 4-6
- MPU_Cx transition to WFI/ON - corresponds to lines 3, 4, and 6 of Table 4-6
- Power transitions handled by the local PRCM module
- MPU_C1 transition to WFI/FORCED_OFF - corresponds to line 5 of Table 4-6. Requires software to program MPU_PRCM with FORCED_OFF mode.
- MPU_Cx transition to WFI/INACT, or WFI/RET - corresponds to line 7, 8 and 9 of Table 4-6. Requires software to program the MPU_PRCM with INACT/RET mode.
- Power transitions handled by the local and global PRCM modules