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ARM Cortex-A8 MPU Subsystem
NOTE: In debug mode, ICE-Crusher could prevent MPU subsystem from entering into IDLE mode.
3.1.7.2.3 MPU Out Of Standby Mode
The MPU out of standby mode follows the following sequence of operation and is applicable to initial
power-up and wakeup from device Off mode.
1. PRCM must start clocks through DPLL programming.
2. Detect active clocking via status output of DPLL.
3. Initiate an interrupt through the INTC to wake up the ARM core from STANDBYWFI mode.
3.1.7.2.4 MPU Power On From a Powered-Off State
1. MPU Power On, NEON Power On, Core Power On (INTC) should follow the ordered sequence per
power switch daisy chain to minimize the peaking of current during power-up.
NOTE: The core domain must be on, and reset, before the MPU can be reset.
2. Follow the reset sequence as described in the Basic Power-On Reset section.
175
SPRUH73H–October 2011–Revised April 2013 ARM MPU Subsystem
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