Texas Instruments DEM-DAI3793A Stereo Receiver User Manual


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Shortplug
Shortplug
Shortplug
Shortplug
Allopen
CN305
CN307
T-SCLK
GND
T-BCK
T-SCK
T-LRCK
T-BCK
TX-DATA
T-LRCK
E-SCLK
TX-DATA
R-SCLK
R-SCLK
R-BCK
R-BCK
R-LRCK
R-LRCK
RX-DATA
RX-DATA
E-SCK
SCK
T-SCLK
BCK
T-BCK
fromU003(DIR:LC89052T)onDaughterCard#2
fromU003(DIR:LC89052T)onDaughterCard#2
CN308
CN320
PSIA-2722
5.4MeasurementsforDynamicCharacteristics
MeasurementsforDynamicCharacteristics
Figure5-6.JumperConfigurationforCombinedMasterandSlaveModes
Typicaldynamicperformancegraphsfordigital-to-analogconverters(DACs)generallyrepresentfour
performancecharacteristics(inadditiontootherspecifications):totalharmonicdistortionandnoise
(THD+N);signal-to-noiseratio(SNR);dynamicrange(DR);andchannelseparation.Thesegraphsalso
specifythetestenvironmentandmeasurementconditionsrequiredinordertomeettypicalperformance
valuesdefinedintheproductdatasheet.
FortheDEM-DAI3793A/3794AEVM,theevaluationenvironmentspecificationsare:
•Equipmentused:AudioPrecision,SystemTwoCascadePlus
•AudioDataformat:16-bitLeft-Justified
•SCKI/BCK/LRCK(f
S
):256f
S
/64f
S
/48kHz
•Powersupply:V
DD
=V
IO
=V
CC
=V
PA
=3.3V(Regulateddownfrom10Vappliedtothemotherboard)
•Temperature:Room/ambient
Oncethelabortestenvironmentisconfiguredaccordingtotheseparameters,starttheEVMsoftware(as
discussedinSection3.2).ClickAllPowerOninthestartupwindoworexecutepower_on.csv,andthen
executethe.csvfilethatcorrespondstotheappropriatemeasurementpathdiscussedinthesubsequent
sectionsofthischapter.
SBAU127–July2007EvaluationandMeasurements55
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