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3.13.4VideoCaptureChannelxField1StopRegister(VCxSTOP1)
VideoCaptureRegisters
Figure3-23.VideoCaptureChannelxField1StartRegister(VCxSTRT1)
31282716
ReservedVCYSTART
R-0R/W-0
151412110
SSEReservedVCXSTART/VCVBLNKP
R/W-1R-0R/W-0
LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset
Table3-16.VideoCaptureChannelxField1StartRegister(VCxSTRT1)FieldDescriptions
Description
Bitfield
(1)
symval
(1)
ValueBT.656orY/CModeRawDataModeTCIMode
31-28Reserved-0Reserved.Thereservedbitlocationisalwaysreadas0.Avaluewrittentothis
fieldhasnoeffect.
27-16VCYSTARTOF(value)0-FFFhStartinglinenumber.Notused.Notused.
DEFAULT0
15SSEOF(value)Startupsynchronizationenablebit.
DISABLE0Notused.StartupNotused.
synchronizationis
disabled.
DEFAULT1Notused.StartupNotused.
synchronizationis
ENABLE
enabled.
14-12Reserved-0Reserved.Thereservedbitlocationisalwaysreadas0.Avaluewrittentothis
fieldhasnoeffect.
11-0VCXSTARTOF(value)0-FFFhVCXSTARTbitsdefinetheVCVBLNKPbitsdefineNotused.
startingpixelnumber.MustbetheminimumCAPEN
VCVBLNKP
anevennumber(LSBisinactivetimetobe
treatedas0).interpretedasa
verticalblanking
period.
DEFAULT0
(1)
ForCSLimplementation,usethenotationVP_VCxSTRT1_field_symval
Thevideocapturechannelxfield1stopregister(VCxSTOP1)definestheendofthefield1-captured
imageortheendoftherawdataorTCIpacket.
Inrawcapturemode,thehorizontalandverticalcountersarecombinedintoasinglecounterthatkeeps
trackofthetotalnumberofsamplesreceived.
InTCIcapturemode,thehorizontalandverticalcountersarecombinedintoasingledatacounterthat
keepstrackofthetotalnumberofbytesreceived.ThecapturestartswhenaSYNCbyteisdetected.The
datacountercountsbytesastheyarereceived.TheFRMCbit(inVCxSTAT)getsseteachtimeapacket
hasbeenreceived.
Thevideocapturechannelxfield1stopregister(VCxSTOP1)isshowninFigure3-24anddescribedin
Table3-17.
VideoCapturePort 76SPRUEM1–May2007
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