Filter
Top Products
4.4SPDIFOpticalInputConnector
4.5SPDIFCo-AxialInputConnector
4.6USBConnector
5Protection
5.1Short-CircuitProtectionandFault-ReportingCircuitry
5.2FaultReporting
www.ti.com
Protection
ThisconnectorisastandardTOSLINKconnectorthatconnectstheSPDIFdigitalaudioinputtotheSPDIF
receiverontheHPL-MC012PCB.Thisconnector,ortheSPDIFco-axialinput,isused,butnotboth
connectorsatthesametime.
ThisconnectorisastandardRCAconnectorthatconnectstheSPDIFdigitalaudioinputtotheSPDIF
receiverontheHPL-MC012PCB.Thisconnector,ortheSPDIFopticalInput,isused,butnotboth
connectorsatthesametime.
ThisconnectorisastandardUSBconnectorandisusedtoconnectGUIcontrolinformationfromaPCto
theHPL-MC012PCB.TheUSBsystemdoesnotstreamaudiofromaPC.
Thissectiondescribestheshort-circuitprotectionandfault-reportingcircuitryoftheTAS5102/3device.
TheTAS5102/3isaself-protectingdevicethatprovidesfaultreporting(includinghigh-temperature
protectionandshort-circuitprotection).Forhighestpossiblereliability,recoveringfromafaultrequires
externalresetofthedevice.ThisisdonebytheTAS5086ontheHPL-MC012board.SeetheTAS5102/3
datasheetformoreinformationregardingtheRESETfunction.
TheOTWandFAULToutputsfromTAS5102/3indicatefaultconditions.SeetheTAS5102/3datasheet
(SLLS801)foradescriptionofthesepins.
Table6.TAS5102Warning/ErrorSignalDecoding
FAULTOTWDeviceCondition
Overcurrent(OC)orundervoltage(UVP)warningorovertemperatureerror
00
(OTE)
Overtemperaturewarning(OTW)orovercurrent(OC)orundervoltage
01
(UVP)
10Junctiontemperaturelowerthan125°Candnofaults(normaloperation)
11Junctiontemperaturehigherthan125°C(overtemperaturewarning)
TheFAULToutputisopen-drain.TheOTWoutputispush-pullactivehigh.
TheOTWLEDontheMC012isilluminatedwhenthetemperatureoftheTAS5102/3isokay(lessthan
125°C.)TheLEDturnsoffwhentheTAS5102/3iswarningofovertemperatureonthedevice(T
J
>125°C.)
ThispolarityisduetoareversalofpolarityoftheOTWpinfromotherdevices(e.g.,TAS5132)whichalso
usethismodulatorboard.
SLLU106–August2008TAS5102EVMandTAS5103EVMfortheTAS5102andTAS5103DigitalAmplifierPowerOutputStages11
SubmitDocumentationFeedback