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TMS320DM355
DigitalMediaSystem-on-Chip(DMSoC)
SPRS463A–SEPTEMBER2007–REVISEDSEPTEMBER2007
tostaticcurrentleakageandoccursregardlessoftheclockrate.Leakage,orstandbypower,is
unavoidablewhilepowerisappliedandscalesroughlywiththeoperatingjunctiontemperatures.Leakage
powercanonlybeavoidedbyremovingpowercompletelyfromadeviceorsubsystem.TheDM355
includesseveralpowermanagementfeatureswhicharebrieflydescribedinTable12-1.RefertotheARM
SubsystemUser'sGuideformoreinformationonpowermanagement.
Table3-17.PowerManagementFeatures
PowerManagementFeaturesDescription
ClockManagement
ModuleclockdisableModuleclockscanbedisabledtoreduceswitchingpower
ModuleclockfrequencyscalingModuleclockfrequencycanbescaledtoreduceswitchingpower
PLLpower-downThePLLscanbepowered-downwhennotinusetoreduce
switchingpower
ARMSleepMode
ARMWait-for-InterruptsleepmodeDisableARMclocktoreduceactivepower
SystemSleepModes
DeepSleepmodeStopalldeviceclocksandpowerdowninternaloscillatorstoreduce
activepowertoaminimum.Registersandmemoryarepreserved.
I/OManagement
USBPhypower-downTheUSBPhycanbepowered-downtoreduceUSBI/Opower
DACpower-downTheDAC'scanbepowered-downtoreduceDACpower
DDRself-refreshandpowerdownTheDDR/mDDRdevicecanbeputintoself-refreshandpower
downstates
DetailedDeviceDescription 86SubmitDocumentationFeedback