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4.12.6VideoDisplayField1VerticalBlankingEndRegister(VDVBLKE1)
VideoDisplayRegisters
Figure4-35.VideoDisplayField1VerticalBlankingStartRegister(VDVBLKS1)
31282716
ReservedVBLNKYSTART1
R-0R/W-0
1512110
ReservedVBLNKXSTART1
R-0R/W-0
LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset
Table4-10.VideoDisplayField1VerticalBlankingStartRegister(VDVBLKS1)FieldDescriptions
Description
Bitfield
(1)
symval
(1)
ValueBT.656andY/CModeRawDataMode
31-28Reserved-0Reserved.Thereservedbitlocationisalwaysreadas0.Avaluewrittentothis
fieldhasnoeffect.
27-16VBLNKYSTART1OF(value)0-FFFhSpecifiestheline(inFLCOUNT)whereSpecifiestheline(inFLCOUNT)where
VBLNKactiveedgeoccursforfield1.verticalblankingbegins(VBLNKactive
DoesnotaffectEAV/SAVVbitedge)forfield1.
operation.
DEFAULT0
15-12Reserved-0Reserved.Thereservedbitlocationisalwaysreadas0.Avaluewrittentothis
fieldhasnoeffect.
11-0VBLNKXSTART1OF(value)0-FFFhSpecifiesthepixel(inFPCOUNT)Specifiesthepixel(inFPCOUNT)
whereVBLNKactiveedgeoccursforwhereverticalblankingbegins(VBLNK
field1.activeedge)forfield1.
DEFAULT0
(1)
ForCSLimplementation,usethenotationVP_VDVBLKS1_field_symval
Inrawdatamode,VBLNKisde-assertedwhenevertheframelinecounter(FLCOUNT)isequalto
VBLNKYSTOP1andtheframepixelcounter(FPCOUNT)isequaltoVBLNKXSTOP1(thisisshownin
Figure4-6).
InBT.656andY/Cmode,VBLNKisde-assertedwheneverFLCOUNT=VBLNKYSTOP1andFPCOUNT
=VBLNKXSTOP1.ThisVBLNKoutputcontroliscompletelyindependentofthetimingcontrolcodes.The
VbitintheEAV/SAVcodesforfield1iscontrolledbytheVDVBIT1register.
Thevideodisplayfield1verticalblankingendregister(VDVBLKE1)controlstheendofverticalblankingin
field1.
Thevideodisplayfield1verticalblankingendregister(VDVBLKE1)isshowninFigure4-36anddescribed
inTable4-11.
Figure4-36.VideoDisplayField1VerticalBlankingEndRegister(VDVBLKE1)
31282716
ReservedVBLNKYSTOP1
R-0R/W-0
1512110
ReservedVBLNKXSTOP1
R-0R/W-0
LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset
SPRUEM1–May2007VideoDisplayPort129
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