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2.11DMAEventSupport
2.12PowerManagement
2.13EmulationConsiderations
PeripheralArchitecture
TheMMC/SDcontrolleriscapableofgeneratingEDMAeventsforbothreadandwriteoperationsinorder
torequestservicefromanEDMAcontroller.BasedontheFIFOthresholdsetting,theEDMAeventsignals
generateeverytime128-bitor256-bitdataistransferredfromtheFIFO.
YoucanputtheMMC/SDperipheralinreduced-powermodestoconservepowerduringperiodsoflow
activity.Theprocessorpowerandsleepcontroller(PSC)controlsthepowermanagementoftheMMC/SD
peripheral.ThePSCactsasamastercontrollerforpowermanagementforalloftheperipheralsonthe
device.FordetailedinformationonpowermanagementproceduresusingthePSC,seethe
TMS320DM644xDMSoCARMSubsystemReferenceGuide(SPRUE14).
TheMMC/SDperipheralisnotaffectedbyemulationhaltevents(suchasbreakpoints).
MultimediaCard(MMC)/SecureDigital(SD)CardController 28SPRUE30B–September2006
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