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6.5PSCInterrupts
6.5.1InterruptEvents
6.5.1.1ModuleStateEmulationEvents
6.5.1.2ModuleLocalResetEmulationEvents
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PSCInterrupts
Note:IntheDM646xDMSoC,thereisonlyonepowerdomain(AlwaysOn),soallIcePick
commandsdonothaveanycontrolonthepowerdomainandonlycontrolmodulestatesand
resets.
Whenemulationtoolsremovetheabovecommands,thePSCimmediatelyexecutesastate
transitionbasedonthecurrentvaluesintheNEXTbitinthepowerdomaincontrolnregister
(PDCTLn)andtheNEXTbitinthemodulecontrolnregister(MDCTLn),assetbysoftware.
ThePSChasoneinterrupt(Table6-4)totheARMinterruptcontroller(AINTC).ThePSCinterruptis
generatedwhencertainIcePickemulationeventsoccur.
Table6-4.PSCInterrupt
ARMEventAcronymSource
47PSCINTPSC
ThePSCinterruptisgeneratedwhenanyofthefollowingeventsoccur:
•ModuleStateEmulationEvent
•ModuleLocalResetEmulationEvent
TheseinterrupteventsaresummarizedinTable6-5anddescribedinmoredetailinthissection.
Table6-5.PSCInterruptEvents
InterruptEnableBits
ControlRegisterEnableBitInterruptCondition
MDCTLnEMUIHBIEInterruptoccurswhentheemulationaltersthemodulestate
MDCTLnEMURSTIEInterruptoccurswhentheemulationaltersthemodule'slocalreset
Amodulestateemulationeventoccurswhenemulationaltersthestateofamodule.Statusisreflectedin
theEMUIHBbitinthemodulestatusnregister(MDSTATn).Inparticular,amodulestateemulationevent
occursunderthefollowingconditions:
•Wheninhibitsleepisassertedbyemulationandsoftwareattemptstotransitionthemoduleoutofthe
enablestate
•Whenforceactiveisassertedbyemulationandthemoduleisnotalreadyintheenablestate
Alocalresetemulationeventoccurswhenemulationaltersthelocalresetofamodule.Statusisreflected
intheEMURSTbitinthemodulestatusnregister(MDSTATn).Inparticular,amodulelocalreset
emulationeventoccursunderthefollowingconditions:
•Whenassertresetisassertedbyemulationalthoughsoftwaredeassertedthelocalreset
•Whenwaitresetisassertedbyemulation
•Whenblockresetisassertedbyemulationandsoftwareattemptstochangethestateoflocalreset
SPRUEP9A–May2008PowerandSleepController(PSC)67
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