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PRCM Basic Programming Model
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PRCM.PRM_VPn_CONFIG[0] VPENABLE
0x1
Enable the voltage processor module.
[11] SR_EN
0x1
Enable the SmartReflex module.
5. OPPy voltage switch is done.
The voltage processor sends an interrupt to the MPU when the interrupt condition is satisfied (the
voltage change from OPPx to OPPy is complete). The interrupt status bit can be read to validate the
interrupt, and then cleared by writing 0x1 to it.
VPn_ OPPCHANGEDONE_ST
Read
On read, if this bit is 0x1, the OPP change is
complete.
VPn_ OPPCHANGEDONE_ST
0x1
Writing 0x1 clears the interrupt status bit.
3.6.6.8
Changing OPP Using Only the Voltage Processor Module
The device OPP change for the VDD1 or VDD2 voltage domains can also be handled through an alternate
method of using only the voltage processor module. In this case, the SmartReflex module is disabled and
the voltage processor is configured to initiate the OPP transition.
is the flow chart of the OPP
change.
444
Power, Reset, and Clock Management
SWPU177N – December 2009 – Revised November 2010
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