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2.2PSCConnector
2.3LoudspeakerandSubwooferConnectors(2-ChannelBTLConfiguration)
2.4DigitalAudioInterfaceSPDIF(J1/OPTO)
SystemInterfaces
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Table1.RecommendedPowerSupplies
DescriptionVoltageLimitationsCurrentRecommendations
(8Ωload)
Systempowersupply5V500mA
Outputpowerstagesupply10–26V3A
(1)
(1)
Theratedcurrentcorrespondto2channelsat20Wperchannel.
•Connectthepositivenodeofthe5V(VIN)powersupplytotheredbindingpostmarkedVIN.
•ConnecttheGNDnodeofthe5VpowersupplytotheblackbindingpostmarkedGND
•Connectthepositivenodeofthehighvoltagepowersupply(PVCC)totheredbindingpostmarked
PVCC.
•Connectthenegativenodeofthehighvoltagepowersupply(PGND)totheblackbindingpostmarked
PGND.
ThereisnospecificpowerupsequenceforTAS5704,butitisrecommendedtopoweruptheVIN
supplyfirstwhileresetiskeptlowforatleast1msandthenpowerupthePVCC.
CAUTION
Bothpositiveandnegativespeakeroutputsarefloatingandmaynotbe
connectedtoground(e.g.throughanoscilloscope).
•Connectthepositive(+)andnegative(–)nodesoftheleftspeakertothecorrespondingmetalbinding
postmarkedOUTAandOUTBonTAS5704EVMboard.
•Connectthepositive(+)andnegative(–)nodesoftherightspeakertothecorrespondingmetal
bindingpostmarkedOUTCandOUTDonTAS5704EVMboard.
•InstalljumpersJP3–JP6andJP7–JP10forBTLconfiguration
•ThesubwooferisanoptiononthisEVM,whichisprovidedthroughconnectingTAS5601EVM2tothe
TAS5704EVMusingconnectorJ1.ConnectorJ1providesthepowerandcorrespondingPWMstothe
TAS5601EVM2(subwooferamplifier).TAS5601EVM2isconfiguredinPBTLandisabletoprovide
40Wtoan8-Ωspeaker.Connectthesubwooferpositiveandnegativenodestothecorresponding
metalbindingpostsontheTAS5601EVM2.
TheDigitalAudioInterfacecontainsdigitalaudiosignaldata(I2S).SeeTAS5704Datasheet(SLOS563)
forsignaltiminganddetailsnotexplainedinthisdocument.
RCAconnectorandOPTOconnectorarethetwoSPDIFinterfaces.TheswitchS1isusedtotoggle
betweenOPTOandRCAconnectorbasedonavailablesignalsource.OncetheRCAcableoroptical
cableisconnectedandthesignalsourceispoweredup,pleaseverifytheSPDIFlockindicator(blue
LED3)tomakesurethereisviablesignalavailabletothedevice.
TheformatoftheDIR9001SPDIFreceivercanbechangedusingjumpersFMT0andFMT1.Jumpers
installed=0.Jumpersremoved=1.ThedescriptionofpossiblemodesisprintedontheEVM.
SeetheschematicofTAS5704EVMandtheDIR9001devicefordetailinformationonmethodbywhich
thedataandclocksareprovidedtoTAS5704.
TA5704EVM4-ChannelDigitalAudioPowerAmplifierwithHardwareControl 10SLOU224–April2008
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