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VESA EDID Implementation Guide Version 1.0
©Copyright 2001 Video Electronics Standards Association Page 4 of 18
Table of Contents
REVISION HISTORY................................................................................................................................................3
1. OVERVIEW ........................................................................................................................................................6
1.1 S
UMMARY ......................................................................................................................................................6
1.2 B
ACKGROUND ................................................................................................................................................6
1.3 S
TANDARD OBJECTIVES .................................................................................................................................6
2. DATA FORMATS...............................................................................................................................................7
2.1 D
ESCRIPTION OF PRESENT AND EARLIER EDID DATA FORMATS .....................................................................7
2.1.1 EDID 1.0 ...............................................................................................................................................7
2.1.2 EDID 1.1 ...............................................................................................................................................7
2.1.3 EDID 1.2 ...............................................................................................................................................7
2.1.4 EDID 1.3 ...............................................................................................................................................7
2.1.5 EDID 2.0 ...............................................................................................................................................7
2.2 E
NHANCED EDID...........................................................................................................................................7
2.3 EDID
FORMAT OVERVIEW.............................................................................................................................8
2.4 D
ATA FORMAT CONVENTIONS .......................................................................................................................9
3. CRITERIA FOR CREATING EDID..............................................................................................................10
3.1 H
EADER: 8 BYTES - OFFSET 00H-07H ...........................................................................................................10
3.1.1 Exact match of defined header data ....................................................................................................10
3.2 V
ENDOR/PRODUCT ID: 10 BYTES – OFFSET 08H-11H ...................................................................................10
3.2.1 Manufacture ID is valid.......................................................................................................................10
3.2.2 Product ID is valid ..............................................................................................................................10
3.2.3 Serial Number......................................................................................................................................10
3.2.4 Week of manufacture in valid range....................................................................................................10
3.2.5 Year of Manufacture in valid range ....................................................................................................10
3.3 EDID
STRUCTURE VERSION / REVISION: 2 BYTES – OFFSET 12H-13H ..........................................................11
3.3.1 EDID version number value is 1 .........................................................................................................11
3.3.2 Revision number in valid range...........................................................................................................11
3.4 B
ASIC DISPLAY PARAMETERS AND FEATURES: 5 BYTES – OFFSET 14H-18H.................................................11
3.4.1 Digital displays must follow video input definition .............................................................................11
3.4.2 Maximum Horizontal and Vertical Image Size in valid range ............................................................11
3.4.3 DPMS ..................................................................................................................................................11
3.4.4 Preferred Timing mode support in EDID Structure version 1 revision 3 ...........................................11
3.4.5 Preferred Timing mode support in all versions...................................................................................11
3.4.6 Default GTF support ...........................................................................................................................11
3.4.7 sRGB....................................................................................................................................................12
3.4.8 Phosphor or Filter Chromaticity: 10 bytes – offset 19h-22h ..............................................................12
3.5 E
STABLISHED TIMINGS: 3 BYTES – OFFSET 23H-25H ....................................................................................12
3.5.1 Established Timings verification .........................................................................................................12
3.6 S
TANDARD TIMING IDENTIFICATION: 16 BYTES – OFFSET 26H-35H..............................................................12
3.6.1 EDID Standard Timings verification...................................................................................................12
3.6.2 Unused areas of the standard timing section must be filled with 01h, 01h.........................................12
3.7 D
ETAILED TIMING SECTION - 72 BYTES – OFFSET 36H-7DH .........................................................................13
3.7.1 All blocks shall be filled with valid data..............................................................................................13
3.7.2 Timing data must represent a supported mode of the display.............................................................13
3.7.3 Ordering of blocks...............................................................................................................................13
3.7.4 Preferred timing in first block .............................................................................................................13
3.7.5 A Monitor Range Limits Descriptor provided.....................................................................................13
3.7.6 A Monitor Name Descriptor provided.................................................................................................13
3.7.7 ASCII string descriptors terminated properly.....................................................................................13
3.7.8 Manufacturer specific data types ........................................................................................................14
3.8 E
XTENSION FLAG AND CHECKSUM: 2 BYTES – OFFSET 7EH-7FH..................................................................14