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Contents
Preface...............................................................................................................................9
1Description..............................................................................................................11
1.1Introduction—PCM3793A/94A..................................................................................12
1.1.1KeyFeatures..............................................................................................12
1.2PinAssignmentsandTerminalFunctions......................................................................14
1.3DEM-DAI3793A/3794AEVMDescription......................................................................15
2GettingStarted.........................................................................................................17
2.1ElectrostaticDischargeWarning................................................................................18
2.2UnpackingtheEVM...............................................................................................18
2.3DefaultConfiguration.............................................................................................19
3Set-UpGuide...........................................................................................................21
3.1BasicOperatingSet-Up..........................................................................................22
3.2SoftwareControlandOperation.................................................................................22
3.2.1UserInterfacePanel.....................................................................................22
3.2.2PowerOn/OffSequence................................................................................23
3.2.3ModuleFunctionControls...............................................................................23
3.2.4LC89052T(DIR:DigitalAudioI/FReceiver)ControlWindow......................................39
3.2.5RegisterSettingHistory.................................................................................40
3.2.6RegisterDirectAccess..................................................................................42
4SwitchesandConnectors..........................................................................................43
4.1Overview............................................................................................................44
4.2Motherboard.......................................................................................................44
4.3DaughterCard#1(PCM3793A).................................................................................46
4.4DaughterCard#2(DIR:LC89052TandDIT:DIT4096).....................................................48
5EvaluationandMeasurements...................................................................................49
5.1SlaveModeWithAudioPrecisionSYS-2722(DefaultSetting).............................................50
5.2MasterModewithAudioPrecisionSYS-2722.................................................................52
5.3CombinedMasterandSlaveModesWithPSIA-2722........................................................54
5.4MeasurementsforDynamicCharacteristics...................................................................55
5.4.1Digital-to-Analog(D/A)Performance..................................................................56
5.4.2Analog-to-Digital(A/D)Performance..................................................................57
5.4.3SpeakerOutputPowerPerformance..................................................................57
5.4.4AmplitudeVersusFrequencyPerformance...........................................................59
5.5ConnectionDiagramforPracticalApplications................................................................61
5.5.1FilterConsiderationforSpeakerOutput...............................................................62
6Schematic,PCBLayout,andBillofMaterials...............................................................63
6.1Schematics.........................................................................................................64
6.2PrintedCircuitBoardLayout.....................................................................................66
6.3ComponentList....................................................................................................71
AReference.csvFiles,InterfacingtoDSPs,andPackageInformation...............................73
A.1Reference.csvFiles..............................................................................................74
ARelatedSignalFlowDiagrams.........................................................................75
SBAU127–July2007Contents3
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