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1、Hdmiedid数据解析 2011-06-0110:14:01
2、 分类：embeddedlinux
3、 标签：
4、字号大中小 订阅一.EDID数据格式：EDID1.3dataformat
Bytesequence
00-19Headerinformation
00–07Headerinformation"00hFFhFFhFFhFFhFFhFFh00h"
08–09ManufacturerID.TheseIDsareassignedbyMicrosoft."00001=A”;“00010=B”;...“11010=Z”.Bit7(ataddress08h)is0
5、,thefirstcharacter(letter)islocatedatbits6→2(ataddress08h),thesecondcharacter(letter)islocatedatbits1&0(ataddress08h)andbits7→5(ataddress09h),andthethirdcharacter(letter)islocatedatbits4→0(ataddress09h).
10–11ProductIDCode(storedasLSBfirst).Assignedbymanufacturer.
12–1532-bitSerialNum
6、ber.Norequirementfortheformat.UsuallystoredasLSBfirst.Inordertomaintaincompatibilitywithpreviousrequirementsthefieldshouldsetatleastonebyteofthefieldtobenon-zeroifanASCIIserialnumberdescriptorisprovidedinthedetailedtimingsection.
16WeekofManufacture.Thisvariesbymanufacturer.Onewayisto
7、countJanuary1–7asweek1,January8–15asweek2andsoon.Somecountbasedontheweeknumber(Sunday-Saturday).Validrangeis1-54.
17YearofManufacture.Add1990tothevalueforactualyear.
18EDIDVersionNumber"01h"
19EDIDRevisionNumber"03h"
20-24Basicdisplayparameters
20Videoinputdefinition
70=analog1=digita
8、l
6videolevel00=0.7,0.3;01=0.714,0.286;10=1,0.4;11=0.7,0
5
4blank-to-blacksetup
3separatesyncs
2compositesync
1syncongreen
0serrationvsync1=DFP1.xcompatible
21MaximumHorizontalImageSize(incentimeters).
22MaximumVerticalImageSize(incentimetres).
23DisplayGamma.Divideby100,thenadd1forac
9、tualvalue.
24PowerManagementandSupportedFeature(s):
7standby
6suspend
5active-off/lowpower
4Displaytype:00=monochrome,01=RGBcolour,10=nonRGBmulticolour,11=undefined
3
2standardcolourspace
1preferredtimingmode
0defaultGTFsupported
25-34Chromaticitycoordinates
25lowsignificantbitsforRed
10、X(bit7-6),RedY(bit5-4),GreenX(bit3-2),GreenY(bit1-0).
26lowsignificantbitsforBlueX(bit7-6),BlueY(bit5-4),WhiteX(bit3-2),WhiteY(bit1-0).
27–34highsignificantbitsforRedX,RedY,GreenX,GreenY,BlueX,BlueY,WhiteX,WhiteY.Todecodeactualvalue,rearrangebitsasfollows:Highsignificantbits7-0for(cha
11、nnel)
