sdio协议 V1.0

TexasInstrumentsSDSpecificationsPartE1SDIOSpecificationVersion1.10DraftFebruary2004TechnicalCommitteeSDAssociationTexasInstruments©CopyrightSDAssociation,2000-2004SDIOSpecificationVersion1.10ConfidentialRevisionHistoryDateVersionChangescomparedtopreviousissueOctober,20011.00BaseversioninitialreleaseFebruary,20041.10IncorporatedAppendixDitems.AddedHigh-Powermode,voltagerangeclarification,inrushcurrentlimitsandmore.SeeAppendixCforfulllist.ConditionsforpublicationPublisherandCopyrightHolder:SDAssociation719SanBenitoSt.SuiteCHollister,CA95023USAPhone:[phone]Fax:[phone]E-mail:[e-mail]:ThisdocumentshallbetreatedasconfidentialundertheNonDisclosureAgreement(NDA),whichhasbeensignedbytheobtainer.ReproductioninwholeorinpartisprohibitedwithoutpriorwrittenpermissionofSDAssociationExemption:TheinformationcontainedhereinispresentedonlyasastandardspecificationforSDCardandSDHostproducts.NoresponsibilityisassumedbySDAssociationforanydamages,anyinfringementsofpatentsorotherrightofthethirdparties,whichmayresultfromitsuse.NolicenseisgrantedbyimplicationorotherwiseunderanypatentorrightsofSDAssociationorothers.Totheextentthisproposedspecification,whichisbeingsubmittedforreviewundertheIPPolicy,implements,incorporatesbyreferenceorreferstoanyportionofversions1.0or1.01oftheSDSpecifications(includingParts1through4),adoptionoftheproposedspecificationshallrequireMembersutilizingtheadoptedspecificationtoobtaintheappropriatelicensesfromtheSD-3C,LLC,asrequiredfortheutilizationofthoseportion(s)ofversions1.0or1.01oftheSDSpecifications.Forexample,implementationoftheSDSpecificationsinahostdeviceunderversions1.0or1.01andundertheadoptedspecificationrequirestheexecutionofaSDHostAncillaryLicenseAgreementwiththeSD-3C,LLC;andimplementationoftheSDSpecificationsunderversions1.0or1.01andundertheproposedspecificationinaSDCardcontaininganymemorystoragecapability(otherthanforstorageofexecutablecodeforacontrollerormicroprocessorwithintheSDCard)requirestheexecutionofaSDMemoryCardLicenseAgreementwiththeSD-3C,LLC.TexasInstruments©CopyrightSDAssociation,2000-2004SDIOSpecificationVersion1.10iConfidentialTableofContents1.GeneralDescription....................................................................................................................................11.1SDIOfeatures.....................................................................................................................................11.2PrimaryReferenceDocument.............................................................................................................11.3Keywords............................................................................................................................................11.4StandardSDIOFunctions...................................................................................................................22.SDIOSignalingDefinition...........................................................................................................................32.1SDIOCardTypes................................................................................................................................32.2SDIOCardmodes...............................................................................................................................32.2.1SPI(Cardmandatorysupport).....................................................................................................32.2.21-bitSDdatatransfermode(Cardmandatorysupport)...............................................................32.2.34-bitSDdatatransfermode(mandatoryforHigh-Speedcards,optionalforLow-Speed)...........32.3SDIOHostModes...............................................................................................................................32.4SignalPins..........................................................................................................................................42.5HostRequirementsforSDIO...............................................................................................................43.SDIOCardInitialization..............................................................................................................................63.1DifferencesinI/Ocardinitialization.....................................................................................................63.2TheIO_SEND_OP_CONDCommand(CMD5).................................................................................103.3TheIO_SEND_OP_CONDResponse(R4).......................................................................................103.4SpecialInitializationconsiderationsforComboCards.......................................................................123.4.1Re-initializebothI/OandMemory..............................................................................................123.4.2UsingaComboCardasSDIOonlyorSDMemoryonlyafterComboInitialization....................123.4.3AcceptableCommandsafter