ALC887 音频芯片技术资料

ALC887(PN:ALC887-GR)7.1CHANNELHIGHDEFINITIONAUDIOCODECWITHTWOINDEPENDENTSPDIF-OUTDATASHEETRev.1.024July2008RealtekSemiconductorCorp.No.2,InnovationRoadII,HsinchuSciencePark,Hsinchu300,TaiwanTel.:[phone].Fax:[phone]©2008RealtekSemiconductorCorp.Allrightsreserved.Nopartofthisdocumentmaybereproduced,transmitted,transcribed,storedinaretrievalsystem,ortranslatedintoanylanguageinanyformorbyanymeanswithoutthewrittenpermissionofRealtekSemiconductorCorp.DISCLAIMERRealtekprovidesthisdocument“asis”,withoutwarrantyofanykind,neitherexpressednorimplied,including,butnotlimitedto,theparticularpurpose.Realtekmaymakeimprovementsand/orchangesinthisdocumentorintheproductdescribedinthisdocumentatanytime.Thisdocumentcouldincludetechnicalinaccuraciesortypographicalerrors.TRADEMARKSRealtekisatrademarkofRealtekSemiconductorCorporation.Othernamesmentionedinthisdocumentaretrademarks/registeredtrademarksoftheirrespectiveowners.USINGTHISDOCUMENTThisdocumentisintendedforthehardwareandsoftwareengineer’sgeneralinformationontheRealtekALC887HighDefinitionAudioCodecIC.Thougheveryefforthasbeenmadetoensurethatthisdocumentiscurrentandaccurate,moreinformationmayhavebecomeavailablesubsequenttotheproductionofthisguide.Inthatevent,pleasecontactyourRealtekrepresentativeforadditionalinformationthatmayhelpinthedevelopmentprocess.REVISIONHISTORYRevisionReleaseDateSummary1.02008/07/24FirstreleaseALC887Datasheet7.1ChannelHighDefinitionAudioCodecw/TwoIndependentSPDIF-OUTiiiRev.1.0TableofContents1.GENERALDESCRIPTION..............................................................................................................................................12.FEATURES.........................................................................................................................................................................22.1.HARDWAREFEATURES.................................................................................................................................................22.2.SOFTWAREFEATURES..................................................................................................................................................33.SYSTEMAPPLICATIONS...............................................................................................................................................44.BLOCKDIAGRAM...........................................................................................................................................................54.1.ANALOGINPUT/OUTPUTUNIT.....................................................................................................................................65.PINASSIGNMENTS..........................................................................................................................................................75.1.ALC887PINASSIGNMENT..........................................................................................................................................75.2.GREENPACKAGEANDVERSIONIDENTIFICATION.........................................................................................................76.PINDESCRIPTIONS.........................................................................................................................................................86.1.DIGITALI/OPINS.........................................................................................................................................................86.2.ANALOGI/OPINS........................................................................................................................................................86.3.FILTER/REFERENCE......................................................................................................................................................96.4.POWER/GROUND........................................................................................................................................................107.HIGHDEFINITIONAUDIOLINKPROTOCOL........................................................................................................117.1.LINKSIGNALS............................................................................................................................................................117.1.1.SignalDefinitions.................................................................................................................................................127.1.2.SignalingTopology...............................................................................................................................................137.2.FRAMECOMPOSITION................................................................................................................................................147.2.1.OutboundFrame–SingleSDO.......................................................