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4.6.1RawModeRGBOutputSupport
4.6.2RawDataFIFOUnpacking
Raw FIFO
Raw 2 Raw 4 Raw 6Raw 1 Raw 3 Raw 5 Raw 7
VDOUT[9−2]
VCLKOUT
63 5655 4847 4039 32
Raw 5 Raw 4Raw 7 Raw 6
Raw 13 Raw 12Raw 15 Raw 14
Little-Endian Unpacking
Raw 8 Raw 10Raw 9 Raw 11Raw 0
31 2423 1615 8 7 0
Raw 1 Raw 0Raw 3 Raw 2
Raw 9 Raw 8Raw 11 Raw 10
Raw FIFO
Raw 2 Raw 4 Raw 6Raw 1 Raw 3 Raw 5 Raw 7
VDOUT[19−12]/VDOUT[9−2]
VCLKOUT
63 4847 32
Raw 2Raw 3
Raw 6Raw 7
Little-Endian Unpacking
Raw 8 Raw 10Raw 9 Raw 11Raw 0
31 1615 0
Raw 0Raw 1
Raw 4Raw 5
Raw 10Raw 11 Raw 8Raw 9
Raw FIFO
Raw 0
(R0)
VDOUT[9−2]
VCLKOUT
63 5655 4847 4039 32
Raw 8 (B2)
Raw 2 (B0)
Raw 7 (G2)
Little-Endian Unpacking
Raw 1
(G0)
Raw 2
(B0)
Raw 3
(R1)
Raw 4
(G1)
Raw 5
(B1)
Raw 6
(R2)
Raw 7
(G2)
Raw 8
(B2)
Raw 9
(R3)
Raw 10
(G3)
Raw 11
(B3)
31 2423 1615 8 7 0
Raw 1 (G0) Raw 0 (R0)
Raw 6 (R2)Raw 11 (B3)
Raw 5 (B1)
Raw 10 (G3)
Raw 4 (G1) Raw 3 (R1)
Raw 9 (R3)
RawDataDisplayMode
TherawdatadisplaymodehasaspecialpixelcountfeaturethatallowstheFPCOUNTincrementrateto
beset.FPCOUNTincrementsonlywhenINCPIXsampleshavebeensentout.Thisoptionallowsproper
trackingofthedisplaypixelswhensendingoutsequentialRGBsamples.(INCPIXwouldbesettothreein
thiscase,toindicatethatasinglepixelisrepresentedbythreeoutputsamples.)
SequentialRGBsamplesoutputarealsosupportedthroughaspecialFIFOunpackingmode.Whenthe
8-bitraw3/4unpackingisselected(RGBXbitinVDCTL),threeoutputbytesareselectedfromeachword
andthefourthbyteisignored.Thisallowsthevideoporttocorrectlyoutputdataformattedas24-bitRGB
(orRGBα)wordsinmemory.
DisplaydataisalwayspackedintotheFIFOsin64-bitwordsandmustbeunpackedbeforebeingsentto
thedisplaydatapipeline.Bydefault,dataisunpackedfromrighttoleft.
The8-bitrawmodeusesasingledataFIFO.SamplesareunpackedasshowninFigure4-21.
Figure4-21.8-BitRawFIFOUnpacking
Figure4-22showsthe16-bitrawmode.SamplesareunpackedfromeachwordoftheFIFO.
Figure4-22.16-BitRawFIFOUnpacking
In8-bitraw3/4mode,threesamplesareunpackedfromtheFIFOandtheremainingbyteisignored.This
isshowninFigure4-23.
Figure4-23.8-BitRawFIFOUnpacking
SPRUEM1–May2007VideoDisplayPort107
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