AN-1998 How to Meet the HDMI 5V Source …

1 ApplicationReportSNVA412A August2009 August2009 RevisedApril2013AN-1998 HowtoMeettheHDMI5 VSourceRequirementSubmitDocumentationFee dbackCopyright 2009 2013, ,andtheabilitytosharethatcontent, , personaldevice, ,a revolutionis happeningin becomingthenormandis driventhroughproductslikehigh-definition televisionprogramming,digitalvideorecord ers,Blu-RayDVDs,1080pflatpaneltelevision s,high-resolutionpersonalvideocameras, ,high-definitionmultimediainterface( hdmi ) ,HDMIL icensingLLCannouncedover600millionHDMI-e nableddevicesarein ,largedisplays,3 Gconnectivity,expandingmemory, tobeabletoeasilyshareandreviewthisconten tin a thehomeentertainmentmarketoffersaclearso lutionforbridgingthegaptoa user s ,a ,compliancerequireseachnodesourcinga ,A sourceshall: Providea Supplya minimumof55mAA sinkshall: Notdrawmorethan10mAfromthepowersignal,wh enpoweredon sourceis.

2 Namely, twoHDMI sourcesareconnectedtogetherwitha singlecable, twoHDMI sinksareconnectedtogetherwitha singlecable, mustapplyprotectionsothatif anothersourceis appliedtothepin, mobiledevice,thisapplieswhenthedeviceis operatingandevenwhenthedeviceispowereddo wnorwithoutpoweratall(batteryhasbeenremo ved).3 RegulationandProtectionThroughIntegrated CircuitsFortunately,therearecompletelyin tegratedcircuitsthatcanperformthistypeof protectionwhilealsosupplyinga TI s PowerWise a constant-frequency,preregulated, , August2009 RevisedApril2013 SubmitDocumentationFeedbackCopyright 2009 2013,TexasInstrumentsIncorporatedType A hdmi Connector(Receptacle) hdmi SourceVideoAudio StatusControl Display Channel (DDC)

3 CEC LineHDMI TransmitterTDMS Channel 0 TDMS Channel 1 TDMS Channel 2 TDMS CLK Channel Pin 1 Pin 19 Pin 17 Pin 18 Pin operatingandsupplying5V,severalprotectio nfeaturesmaybeimplemented, theoutputis shortedtoground, thisshortis sustained,thedevicewillcontinuetosourcec urrentuntilthermalshutdownis anotherHDMI sourceis appliedtotheoutputoftheLM2757regulatoran dthatsourcevoltageis belowthatoftheLM2757, ;therefore,if anotherHDMI sourceis connectedwhichhasahighervoltage,thedevic ewillactasthoughnoregulationis a ,witha totalsolutionsizeoflessthan12mm2, a logicalwaytoimplementconnectivityofmulti mediacontenttoothernodesin HDMIis themobilesolutionofchoice, , Hitachi,Ltd.

4 ,MatsushitaElectricIndustrialCo.,Ltd.,Ph ilipsConsumerElectronics, ,SiliconImage,Inc.,SonyCorporation,Thoms onInc.,ToshibaCorporation,November10, August2009 RevisedApril2013AN-1998 HowtoMeettheHDMI5 VSourceRequirementSubmitDocumentationFee dbackCopyright 2009 2013,TexasInstrumentsIncorporatedIMPORTA NTNOTICET exasInstrumentsIncorporatedanditssubsidi aries(TI)reservetherighttomakecorrection s,enhancements,improvementsandotherchang estoitssemiconductorproductsandservicesp erJESD46,latestissue,andtodiscontinueany productorserviceperJESD48, (alsoreferredtohereinas components ) aresoldsubjecttoTI s ,in accordancewiththewarrantyin TI s ,testingofallparametersofeachcomponentis productsandapplications, ,eitherexpressorimplied,is grantedunderanypatentright,copyright,mas kworkright,orotherintellectualpropertyri ghtrelatingtoanycombination,machine,orpr ocessin licensetousesuchproductsorservicesora licensefroma thirdpartyunderthepatentsorotherintellec tualpropertyofthethirdparty,ora TIdatabooksordatasheetsis permissibleonlyif reproductionis withoutalterationandis accompaniedbyallassociatedwarranties,con ditions,limitations, is solelyresponsibleforcompliancewithallleg al,regulatoryandsafety-relatedrequiremen tsconcerningitsproducts.

5 AndanyuseofTIcomponentsin itsapplications, hasallthenecessaryexpertisetocreateandim plementsafeguardswhichanticipatedangerou sconsequencesoffailures,monitorfailuresa ndtheirconsequences, , ,TI s goalis , FDAC lassIII(orsimilarlife-criticalmedicalequ ipment)unlessauthorizedofficersofthepart ieshaveexecuteda enhancedplastic solelyattheBuyer's risk,andthatBuyeris solelyresponsibleforcompliancewithallleg alandregulatoryrequirementsin , , , :TexasInstruments,PostOfficeBox655303,Da llas,Texas75265 Copyright 2013,TexasInstrumentsIncorporat