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EDID

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VESA Enhanced EDID Standard Release A, Rev.1

E-EDID







Standard

VESA

Video Electronics Standards Association

920 Hillview Court, Suite 140 Phone: (408) 957-9270

Milpitas, CA 95035 Fax: (408) 957-9277

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.

Summary

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. The 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 that 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

VESA Enhanced EDID Standard Release A, Rev.1

Table of Contents

REVISION HISTORY ................................................................................................................................................3

1. OVERVIEW.........................................................................................................................................................5

1.1 S

UMMARY

......................................................................................................................................................5

1.2 B

ACKGROUND

.................................................................................................................................................5

1.3 S

TANDARD

BJECTIVES

..................................................................................................................................5

1.4 R

EFERENCE

OCUMENTS

...............................................................................................................................5

2. DATA FORMATS ...............................................................................................................................................6

2.1 D

ESCRIPTION OF PRESENT AND EARLIER

EDID

DATA FORMATS

......................................................................6

2.1.1 EDID 1.0....................................................................................................................................................6

2.1.2 EDID 1.1....................................................................................................................................................6

2.1.3 EDID 1.2....................................................................................................................................................6

2.1.4 EDID 1.3....................................................................................................................................................6

2.1.5 EDID 2.0....................................................................................................................................................6

2.2 E

NHANCED

EDID...........................................................................................................................................6

2.2.1 Enhanced EDID High Level Layout ..........................................................................................................7

3. EXTENDED DISPLAY IDENTIFICATION DATA (EDID) STRUCTURE VER. 1 REV. 3.......................9

3.1 EDID F

ORMAT

VERVIEW

.............................................................................................................................9

3.2 D

ATA

ORMAT

ONVENTIONS

......................................................................................................................10

3.3 H

EADER

: 8

BYTES

.........................................................................................................................................11

3.4 V

ENDOR

RODUCT

ID: 10

BYTES

.................................................................................................................11

3.5 EDID S

TRUCTURE

ERSION

/ R

EVISION

: 2

BYTES

........................................................................................12

3.6 B

ASIC

ISPLAY

ARAMETERS AND

EATURES

: 5

BYTES

...............................................................................12

3.7 P

HOSPHOR OR

ILTER

HROMATICITY

: 10

BYTES

.........................................................................................14

3.8 E

STABLISHED

IMINGS

: 3

BYTES

..................................................................................................................15

3.8.1 EDID Established Timings Section..........................................................................................................15

3.9 S

TANDARD

IMING

DENTIFICATION

.............................................................................................................16

3.9.1 EDID Standard Timings Section..............................................................................................................16

3.10 D

ETAILED

IMING

ECTION

- 72

BYTES

........................................................................................................17

3.10.1 First Detailed Timing Descriptor Block...............................................................................................17

3.10.2 Detailed Timing Descriptor - 18 bytes.................................................................................................18

3.10.3 Monitor Descriptor Description - 18 bytes..........................................................................................19

3.11 E

XTENSION

LAG AND

HECKSUM

...............................................................................................................22

3.12 N

OTE

EGARDING

ORDERS

.........................................................................................................................23

4. EDID EXTENSIONS.........................................................................................................................................24

5. TIMING INFORMATION PRIORITY ORDER ...........................................................................................24

6. APPENDIX A - SAMPLE EDID ......................................................................................................................25

6.1 EXAMPLE 1. E

NHANCED

EDID

SAMPLE WITH S

RGB

AND

ECONDARY

GTF...........................................25

6.2 E

XAMPLE

2 - L

EGACY

EDID

EXAMPLE FOR REFERENCE

..............................................................................28

7. APPENDIX B - ANSWERS TO COMMONLY ASKED QUESTIONS......................................................31

VESA Enhanced EDID Standard Release A, Rev.1

OVERVIEW

1.1 Summary

The Extended Display Identification Data (EDID) described 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

independent 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 documents:

Enhanced EDID Standard (Basic 128-byte data structure. Rules for how EDID extensions are mapped.)

Optional EDID Extension Standards (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

1.2 Background

Enhanced EDID was created to clarify how EDID Extensions shall be used in order to handle identification of future

monitor capabilities, while maintaining a basic level of compatibility that can be used to uniquely identify the

monitor. Enhanced EDID is intended to supersede all previous versions of EDID.

1.3 Standard Objectives

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 Microsoft Plug and Play definition

•

Provide information in a compact format to allow the graphics subsystem to be configured based on the

capabilities of the attached display

1.4 Reference Documents

Note:

Versions identified here are current, but users of this standard are advised to ensure 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 - GTF, Version 1.0, December 18, 1996

•

Microsoft/Intel Plug and Play ISA Specification, 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

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