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5.1.1VideoPortPeripheralIdentificationRegister(VPPID)
GPIORegisters
Thevideoportperipheralidentificationregister(VPPID)isaread-onlyregisterusedtostoreinformation
abouttheperipheral.
Thevideoportperipheralidentificationregister(VPPID)isshowninFigure5-1anddescribedinTable5-2.
Figure5-1.VideoPortPeripheralIdentificationRegister(VPPID)
31242316
ReservedTYPE
R-0R-00000001
15870
CLASSREVISION
R-00001001R-x
(A)
LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset
ASeethedevice-specificdatasheetforthedefaultvalueofthisfield.
Table5-2.VideoPortPeripheralIdentificationRegister(VPPID)FieldDescriptions
Bitfield
(1)
symval
(1)
ValueDescription
31-24Reserved-0Reserved.Thereservedbitlocationisalwaysreadas0.Avaluewrittentothisfield
hasnoeffect.
23-16TYPEOF(value)Identifiestypeofperipheral.
DEFAULT01hVideoport.
15-8CLASSOF(value)Identifiesclassofperipheral.
DEFAULT09hVideo
7-0REVISIONOF(value)Identifiesrevisionofperipheral.
xSeethedevice-specificdatasheetforthevalue.
(1)
ForCSLimplementation,usethenotationVP_VPPID_field_symval
General-PurposeI/OOperation 152SPRUEM1–May2007
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