Filter
Top Products
www.ti.com
5.1.6VideoPortPinDataOutputRegister(PDOUT)
GPIORegisters
ThebitsofPDOUTdeterminethevaluedrivenonthecorrespondingGPIOpin,ifthepinisconfiguredas
anoutput.WritesdonotaffectpinsnotconfiguredasGPIOoutputs.ThebitsinPDOUTaresetorcleared
bywritingtothisregisterdirectly.AreadofPDOUTreturnsthevalueoftheregisternotthevalueatthe
pin(thatmightbeconfiguredasaninput).AnalternativewaytosetbitsinPDOUTistowritea1tothe
correspondingbitofPDSET.AnalternativewaytoclearbitsinPDOUTistowritea1tothecorresponding
bitofPDCLR.
PDOUThasthesealiases:
•PDSET—writinga1toabitinPDSETsetsthecorrespondingbitinPDOUTto1;writinga0hasno
effectandkeepsthebitsinPDOUTunchanged.
•PDCLR—writinga1toabitinPDCLRclearsthecorrespondingbitinPDOUTto0;writinga0hasno
effectandkeepsthebitsinPDOUTunchanged.
Thevideoportpindataoutputregister(PDOUT)isshowninFigure5-6anddescribedinTable5-7.
Figure5-6.VideoPortPinDataOutputRegister(PDOUT)
3124
Reserved
R-0
2322212019181716
ReservedPDOUT22PDOUT21PDOUT20PDOUT19PDOUT18PDOUT17PDOUT16
R-0W-0W-0W-0W-0W-0W-0W-0
15141312111098
PDOUT15PDOUT14PDOUT13PDOUT12ReservedReservedPDOUT9PDOUT8
W-0W-0W-0W-0R-0R-0W-0W-0
76543210
PDOUT7PDOUT6PDOUT5PDOUT4PDOUT3PDOUT2ReservedReserved
W-0W-0W-0W-0W-0W-0R-0R-0
LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset
Table5-7.VideoPortPinDataOutRegister(PDOUT)FieldDescriptions
Bitfield
(1)
symval
(1)
ValueDescription
31-23Reserved-0Reserved.Thereservedbitlocationisalwaysreadas0.Avaluewrittentothisfield
hasnoeffect.
22PDOUT22OF(value)PDOUT22bitdrivestheVCTL3pinonlywhentheGPIOisconfiguredasoutput.
Whenreadingdata,returnsthebitvalueinPDOUT22,doesnotreturninputfrompin.
Whenwritingdata,writestoPDOUT22bit.
DEFAULT0Pindriveslow.
VCTL3LO
VCTL3HI1Pindriveshigh.
21PDOUT21OF(value)PDOUT21bitdrivestheVCTL2pinonlywhentheGPIOisconfiguredasoutput.
Whenreadingdata,returnsthebitvalueinPDOUT21,doesnotreturninputfrompin.
Whenwritingdata,writestoPDOUT21bit.
DEFAULT0Pindriveslow.
VCTL2LO
VCTL2HI1Pindriveshigh.
(1)
ForCSLimplementation,usethenotationVP_PDOUT_PDOUTn_symval
SPRUEM1–May2007General-PurposeI/OOperation159
SubmitDocumentationFeedback