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E-EDIDä Standard
VESA
Video Electronics Stan=
dards
Association
860 Hillview
Court, Suite 150 &nb=
sp; =
&nb=
sp; =
&nb=
sp; Phon=
e:
(408) 957-9270
VESA ENHANCED EXTENDED DISPLAY
IDENTIFICATION DATA
STANDARD
Release A, Revision 1
February 9, 2000
Purpose
This
standard defines data formats to carry configuration information, allowing
optimum use of displays. <=
span
style=3D'mso-spacerun:yes'>
S=
ummary
This
document describes the basic 128-byte data structure "EDID 1.3", =
as
well as the overall layout of the data blocks that make up Enhanced EDID. T=
he
EDID 1.3 data structure is intended to be backward compatible with EDID data
structures 1.0, 1.1 and 1.2 as implemented in all commercially available
monitors. EDID data structure 1.3 contains enhancements to enable the Dual =
GTF
curve concept. Use of EDID extensions described in this document assumes th=
at
the addressing method described in the Enhanced DDC standard is used.
Note
This
issue of the EDID document contains specifications for the mandatory core
elements of Enhanced EDID. Optional EDID extensions are defined in separate
documents=
.
Preface<=
/span>
Intellectual Property<=
/span>
Co=
pyright
© 1994 - 2000 Video Electronics Standards Association. All rights reserved.
While every precaution=
has
been taken in the preparation of this standard, the Video Electronics Stand=
ards
Association and its contributors assume no responsibility for errors or
omissions, and make no warranties, expressed or implied, of functionality or
suitability for any purpose.
Trademarks<=
span
style=3D'font-size:14.0pt;mso-bidi-font-size:10.0pt'>
All trademarks used wi=
thin
this document are the property of their respective owners. VESA, DDC, DPMS,
EDID, EVC, P&D and VDIF are trademarks of the Video Electronics Standard
Association.
I2C is a
trademark owned by Philips.
Patents
VESA proposals and sta=
ndards
are adopted by the Video Electronics Standards Association without regard a=
s to
whether their adoption may involve any patents or articles, materials, or
processes. Such adoption does not assume any liability to any patent owner,=
nor
does it assume any obligation whatsoever to parties adopting the proposals =
or
standards documents.
Support for this Stand=
ard
Clarifications
and application notes to support this standard may be written. To obtain the
latest standard and any support documentation, contact VESA.
If you have a product, which incorporates EDID, you should ask the company that manufactured your product for assistance. If you are a manufacturer, VESA c= an assist you with any clarification you may require. All comments or reported errors should be submitted in writing to VESA using one of the following methods.<= o:p>
·
Fax &n=
bsp; : &=
nbsp; 408-957
9270, direct this note to Technical
Support at VESA
·
e-mail: &nbs=
p; support@vesa.org
·
mail: =
Technical
Support
&=
nbsp; &nbs=
p; Video
Electronics Standards Association
&nbs=
p; &=
nbsp; 860
Hillview Court, Suite 150
&nbs=
p; &=
nbsp;
&nbs=
p; &=
nbsp;
Release A Septe=
mber
2, 1999
Initial re= lease of the standard. The body= of the standard is derived from the Extended Display Identification Standard Version 3.0
Release A
Revision 1 &nb=
sp; February
9, 2000
Consolidate requirements of de= tailed timing section in section 3.10
Section 3.4 - removed restrict= ion of 00h, 00h, 00h, 00h value for serial number field
Table 3.11 - added note to ref= erence preferred timing mode bit requirements
Table 3.15 - added note for 1:= 1 aspect ratio in earlier EDID definitions
Table 3.16 – corrected o= rder of bits in Vertical Sync format description
Table 3.17 - added definition = for stereo flag bits values of 0,0,x
Table 3.20 - added clarificati= on to round up Max pixel; clock value
Acknowle=
dgments
This document would not have been possible without the effor= ts of the VESA Display Committee. In particular, the following individuals and= their companies contributed significant time and knowledge to this edition, and/or previous editions of the EDID document.
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Anders Frisk |
Nokia |
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Jack Hosek |
NEC |
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Bob Myers |
HP |
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Richard Atanus |
NEC |
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Don Panell |
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Joe Goo= dart |
Dell |
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Hans van der Ven |
Panasonic |
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Bill Milford |
3dfx |
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Geoff Gould |
Intel |
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Ian Miller |
IBM |
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Rick Stoneking |
Microchip |
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Shaun K= erigan |
IBM |
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Glenn Adler |
Philips |
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Ed Anwy= l |
IBM |
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Chuck Scott |
Microsoft |
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Anthony Cianfarano |
Mitsubishi |
|
Alain d’Hautecourt |
Viewsonic |
|
Ton Wang |
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Canon |
|
John Matsumoto |
Toshiba |
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Drew Loucks |
Elo Touch= systems |
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Table of Contents
Revision History...............=
...........................................................................=
......................................................................... <=
/span>3
1. &n=
bsp; OVERVIEW..........................................=
...........................................................................=
...................................................... 5
1.1 Summary..........................................=
...........................................................................=
................................................ 5
1.2 Background..........................................=
...........................................................................=
........................................ 5
1.3 Standard
Objectives..........................=
...........................................................................=
.................................... 5
1.4 Reference
Documents...........................=
...........................................................................=
................................ 5
2. &n=
bsp; DATA
FORMATS.............................=
...........................................................................=
......................................................... =
PAGEREF
_Toc466345517 \h =
6
2.1 Description
of present and earlier EDID data formats.......................................................... 6
2.1.1  =
; EDID
1.0.................................=
...........................................................................=
.......................................................... =
PAGEREF
_Toc466345519 \h =
6
2.1.2  =
; EDID
1.1.................................=
...........................................................................=
.......................................................... =
PAGEREF
_Toc466345520 \h =
6
2.1.3  =
; EDID
1.2.................................=
...........................................................................=
.......................................................... =
PAGEREF
_Toc466345521 \h =
6
2.1.4  =
; EDID
1.3.................................=
...........................................................................=
.......................................................... =
PAGEREF
_Toc466345522 \h =
6
2.1.5  =
; EDID
2.0.................................=
...........................................................................=
.......................................................... =
PAGEREF
_Toc466345523 \h =
6
2.2 Enhanced
EDID................................=
...........................................................................=
............................................. 6
2.2.1  =
; Enhanced
EDID High Level Layout..............=
...........................................................................=
.............................. 7
3. &n=
bsp; Extended
Display Identification Data (EDID) Structure Ver. 1 Rev. 3............................... 9
3.1 EDID
Format Overview.....................=
...........................................................................=
...................................... 9
3.2 Data
Format Conventions..................=
...........................................................................=
.............................. 10
3.3 Header:
8 bytes.............................=
...........................................................................=
............................................ 11
3.4 Vendor/Product
ID: 10 bytes........................=
...........................................................................=
................... 11
3.5 EDID
Structure Version / Revision: 2 bytes..........................................................................=
........... 12
3.6 Basic
Display Parameters and Features: 5 bytes.......................................................................=
12
3.7 Phosphor
or Filter Chromaticity: 10 bytes....=
...........................................................................=
... 14
3.8 Established
Timings: 3 bytes....................=
...........................................................................=
...................... 15
3.8.1 &nbs=
p; EDID Established Timings Section..........................................=
...........................................................................=
. 15
3.9 Standard
Timing Identification...............=
...........................................................................=
................... 16
3.9.1  =
; EDID
Standard Timings Section............=
...........................................................................=
................................... 16
3.10 Detailed
Timing Section - 72 bytes...........=
...........................................................................=
.................. 17
3.10.1 &nbs=
p; First Detailed Timing Descriptor Block..........................................=
............................................................... 17
3.10.2 &nbs=
p; Detailed
Timing Descriptor - 18 bytes........=
...........................................................................=
......................... 18
3.10.3 &nbs=
p; Monitor
Descriptor Description - 18 bytes...=
...........................................................................=
...................... 19
3.11 Extension =
Flag
and Checksum........................=
...........................................................................=
.............. 22
3.12 Note Regar=
ding
Borders.............................=
...........................................................................=
...................... 23
4. &n=
bsp; EDID
Extensions..........................=
...........................................................................=
..................................................... 24
5. &n=
bsp; Timing
information priority order..........=
...........................................................................=
.................... 24
6. &n=
bsp; APPENDIX
A - Sample EDID.....................=
...........................................................................=
...................................... 25
6.1 EXAMPLE
1. Enhanced EDID sample with =
sRGB
and Secondary GTF...................=
............... 25
6.2 Example
2 - Legacy EDID example for reference........................................................................ <=
/span>28
7. &n=
bsp; APPENDIX
B - Answers To Commonly Asked
Questions...........................=
...................................... 31
The Extended Display Identification Data (EDID) descri= bed in this document, is a data structure, with optional variants, to allow the display to inform the host about its identity and capabilities. The EDID data structure is indepen= dent of the communication protocol used between the monitor and host.
Enhanced EDID defines a basic = data structure of 128 bytes that all compliant monitors must supply, as well as = the rules for how extensions can be added to the basic structure.
Enhanced EDID family of docume= nts:
1= = Enhanced EDID Standard (Basic 128-byte data structure. Rules for how EDID extensions are mapped.)
2= = Optional EDID Extension Stand= ards (Data structure for additional data contained in EDID extensions.)
2= .1 = EDID Structure 2 Extension
2= .2 = Flat Panel Timings Extension
2= .3 = Color transfer function Extension
2= .4 = …future extension structures not yet defined<= /p>
&nbs= p;
Enhanced EDID was created to clarify how EDID Extensio= ns shall be used in order to handle identification of future monitor capabilit= ies, while maintaining a basic level of compatibility that can be used to unique= ly identify the monitor. Enhanced EDID is intended to supersede all previous v= ersions of EDID.
The EDID Standard was developed by VESA to meet, exceed and/or complement certain criteria. These criteria are set forth as Standard Objectives as follows:
· Support Microsoftâ Plug and Play definition
· Provide information in a compact format to a= llow the graphics subsystem to be configured based on the capabilities of the attached display
Note: Ver= sions identified here are current, but users of this standard are advised to ensu= re they have the latest versions of referenced standards and documents.
· VESA Enhanced Display Data Channel Standard - E-DDC, Version 1, September 2, 1999
· VESA Plug & Display Standard - P&D, Version 1, June 11, 1997
· VESA Video BIOS Extensions for Display Data Channel Standard - VBE/DDC, Version 1.1, Nov. 18, 1999
· VESA Video Image Area Definition Standard - VIAD, Revision 1.0, August 12, 1993
· VESA Generalized Timing Formula Standard - G= TF, Version 1.0, December 18, 1996
· Microsoft/Intel Plug and Play ISA Specificat= ion, Version 1.0, May 28, 1993.
· Microsoft/Intel Plug and Play Errata and Clarification Document, December 10, 1993.
· IBM Personal System/2 Hardware Interface Technical Reference - Common Interfaces Video Subsystem