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9.2.2DM642VirtualI
2
CRegisterMap
ProgrammingtheTMS320DM642
WhentheDM642Controlwindowisopened,allreadableregistersforthedevicearereadfromsoftware
toinitializethedialogpage.RegisterdetailsaregiveninTable8.Valuesonthepagearechangedby
manipulatingthevariousdialogcontrolsasdescribedinTable8.Thedataisorganizedforeachofthe
fourdecoders,allowingindependentcontrolofeachdecoder.
Table8.DM642ControlWindowControls
CONTROLDEFINITION
ReadAllReadsalldefinedreadableregistersfromthedeviceandupdatestheregisterwindow.
CausesallchangesmadetothepagesincethelastApplytobediscarded.Changesmadetodialogcontrols
with‘immediateregisterupdate’arenotdiscarded,sincetheyhavealreadybeenchangedintheDM642
Closeregisters.
Doesnotwritetoregisters.
Closesthedialog.
ImageCaptureEnablesimagecaptureintheDM642forthatgivendecoder(1–4).Immediateregisterupdate.
UsedtoinformtheDM642oftheinputcolorstandardforthatgivendecoder(1–4).Nochangeinregisteruntil
VideoStandardApplyisclicked.
DoesnotchangethevideostandardsettingfortheTVP5154.
UsedtoinformtheDM642oftheinputimagesizeforthatgivendecoder(1–4).NochangeinregisteruntilApply
ImageSizeisclicked.
ActualscalingisdoneintheTVP5154.
ImagePositionDefinesthequadrantlocationfortheinputofthatgivendecoder(1–4).Immediateregisterupdate.
ImmediatelychangesDM642registersforinputimagesizeandinputcolorstandardforthatgivendecoder
(1–4).
Apply
EnablesTVP5154scalerandprogramscorrectscalingregistersettingsintoTVP5154basedonselectedinput
standardandimagesizeforthatgivendecoder(1–4).
Flash
ReadsthedatafromtheFlashVersionregistersandwritesitintotheregisterwindow.
Major/Minor
LEDControlChangesLED(1–7)status.Checked:LEDisON.Unchecked:LEDisOFF.Immediateregisterupdate.
Table9.DM642VirtualI
2
CRegisterMap
REGISTERDESCRIPTIONADDRESSDATA(DEFAULT)
Decoder1Register00h02h
Decoder2Register01h12h
Decoder3Register02h22h
Decoder4Register03h32h
Decoder1InputFormatRegister04h01h
Decoder2InputFormatRegister05h01h
Decoder3InputFormatRegister06h01h
Decoder4InputFormatRegister07h01h
LEDControl08h00h
FlashVersion:Major09h01h
FlashVersion:Minor0Ah00h
SLEU069A–February2006–RevisedJuly2006TVP5154EVMUser'sGuide27
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