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4.12.14VideoDisplayField2TimingRegister(VDFLDT2)
VideoDisplayRegisters
Figure4-43.VideoDisplayField1TimingRegister(VDFLDT1)
31282716
ReservedFLD1YSTART
R-0R/W-0
1512110
ReservedFLD1XSTART
R-0R/W-0
LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset
Table4-18.VideoDisplayField1TimingRegister(VDFLDT1)FieldDescriptions
Bitfield
(1)
symval
(1)
ValueDescription
31-28Reserved-0Reserved.Thereservedbitlocationisalwaysreadas0.Avaluewrittentothisfield
hasnoeffect.
27-16FLD1YSTARTOF(value)0-FFFhSpecifiesthefirstlineoffield1.(ThelinewhereFLDisasserted.)
DEFAULT0
15-12Reserved-0Reserved.Thereservedbitlocationisalwaysreadas0.Avaluewrittentothisfield
hasnoeffect.
11-0FLD1XSTARTOF(value)0-FFFhSpecifiesthepixelonthefirstlineoffield1wheretheFLDoutputisasserted.
DEFAULT0
(1)
ForCSLimplementation,usethenotationVP_VDFLDT1_field_symval
Thevideodisplayfield2timingregister(VDFLDT2)setsthetimingofthefieldidentificationsignal.
Inrawdatamode,theFLDsignalisassertedwhenevertheframelinecounter(FLCOUNT)isequalto
FLD2YSTARTandtheframepixelcounter(FPCOUNT)isequaltoFLD2XSTART(thisisshownin
Figure4-6.
InBT.656andY/Cmode,theFLDsignalisassertedtoindicatefield2displaywheneverFLCOUNT=
FLD2YSTARTandFPCOUNT=FLD2XSTART.TheFLDoutputiscompletelyindependentofthetiming
controlcodes.TheFbitintheEAV/SAVcodesiscontrolledbytheVDFBITregister.
Thevideodisplayfield2timingregister(VDFLDT2)isshowninFigure4-44anddescribedinTable4-19.
Figure4-44.VideoDisplayField2TimingRegister(VDFLDT2)
31282716
ReservedFLD2YSTART
R-0R/W-0
1512110
ReservedFLD2XSTART
R-0R/W-0
LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset
Table4-19.VideoDisplayField2TimingRegister(VDFLDT2)FieldDescriptions
Bitfield
(1)
symval
(1)
ValueDescription
31-28Reserved-0Reserved.Thereservedbitlocationisalwaysreadas0.Avaluewrittentothisfield
hasnoeffect.
27-16FLD2YSTARTOF(value)0-FFFhSpecifiesthefirstlineoffield2.(ThelinewhereFLDisasserted.)
DEFAULT0
15-12Reserved-0Reserved.Thereservedbitlocationisalwaysreadas0.Avaluewrittentothisfield
hasnoeffect.
(1)
ForCSLimplementation,usethenotationVP_VDFLDT2_field_symval
136VideoDisplayPortSPRUEM1–May2007
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