Filter
Top Products
www.ti.com
Troubleshooting
Table21.TVP5154EVMTroubleshooting(continued)
SYMPTOMCAUSESOLUTION
MakesureI
2
Cslaveaddressjumperson
DecoderI
2
Cslaveaddressiswrong.theTVP5154decodermoduleareacross
pins2and3.
Slaveaddressishardcodedtobe0x54in
thecommandfile.MakesuretheI
2
Cslave
EncoderI
2
Cslaveaddressiswrong.
addressjumperonencodermoduleis
acrosspins2and3.
ParallelcableisnotconnectedfromPC
parallelporttotheTVP5154decoderConnectcable
moduleDB25connector.
Powersupplymustbepluggedintoa
100-Vto240-V/47-Hzto63-Hzpower
EVMisnotpoweredon.
source,andthecordmustbepluggedinto
thepowerconnectorontheEVM.
Someparallelcablesarenotwired
Wrongtypeofparallelcable.straightthroughpinforpin.Usethecable
NoI
2
CcommunicationsuppliedwiththeEVM.
PresstheResetbuttonontheTVP5154
Devicewasplacedinpower-downmode.
DecoderModule.
EVMwasconfiguredforanexternalI
2
CReinstall0-ΩresistorsR5andR6.Control
master.EVMusingthePCparallelport.
DOTHISASALASTRESORT.Reboot
PC,enterBIOSsetupprogram,andset
parallelportLPT1mode(Addr378h)to
ECPmodeorbidirectionalmode
PCparallelportmodeisnotsetcorrectly.
(sometimescalledPS/2modeorbyte
mode).Ifalreadysettooneofthesetwo
modes,switchtotheothersetting(see
Section10.2).
PCmaynotbecapableofoperatinginthe
requiredparallelportmode.Thisistrueof
StillnoI
2
Ccommunication
somelaptopcomputers.Useadifferent
computer,preferablyadesktopPC.
WhenWinVCCisstartedandtheWinVCCConfigurationdialogboxisclosedwithOK,theI
2
Csystemtest
isperformed(unlesstheI
2
CSystemTestprogramoptionsbuttonwasdisabled).
IftheI
2
Csystemtestfails,adialogbox(seeFigure22)appears.Thisexamplereportsthatareadfrom
TVP5154failed,usingslaveaddress0xB8,sub-address0xD0.Thedatareadwas0x78.Theexpected
datawas0x00.
Afternotingwhichdevicehadaproblem,clickOKtocontinue.Next,theCorrectiveActionDialogbox
appearstofixtheproblem.
34TVP5154EVMUser'sGuideSLEU069A–February2006–RevisedJuly2006
SubmitDocumentationFeedback