EDID 1.3 Data Format

Extended Display Identification Data

Overview

128 bytesHeader (8) 00h FFh FFh FFh FFh FFh FFh 00h

Vendor / Product Identification (10) ID/ SN / Date

EDID Structure Version / Revision (2) EDID 1.0/1.1/1.2/1.3

Basic Display Parameters / Features (5) Video Input def. / size / Gamma / Features

Color Characteristics (10) RGB W

Established Timings (3) ET1 / ET2 / Reserved

Standard Timing Identification(16) STI 1~8

Detailed Timing Descriptions(72) DTD 1 / DTD/Monitor Descriptor 2~4

Extension Flag (1) Number of (optional) Extension blocks

Checksum(1) sum of all 128 bytes = 00h

Vendor / Product Identification (1/2)

ID Manufacturer Name (2 bytes: 08h, 09h) ：EISA 3 -character ID assigned by MS."00001=A” “； 00010=B” ； ... “11010=Z”.08h bit 7 : wiki: 0 ， VESA EDID 1.3 Format not

specified. 08h bit 6~2: First Char. 08h bit 1&0 and 09h bit 7~5: Second Char. 09h bit 4~0: third Char.

Vendor / Product Identification (2/2)

ID Product Code(2 bytes): model ID, LSD ID Serial Number(4 bytes): Optional, LSD Week of Manufacture(1 bytes): 0:unused,

Rage:1~ 53 Year of Manufacture (1 bytes): V = Year of manufacture - 1990

EDID Structure Version / Revision

EDID Structure Version / Revision:(12h~13h, 2Bytes)12h: 1 Bytes Version # 13h: 1 Bytes Revision # E.g. EDID 1.3 ： Version = 1 and Revision = 3

Basic Display Parameters (1/2)Video Input Definition(14h, 1 byte)

Digital Analog

Bit 7: 1 Bit 7: 0

Bit 0: 1=DFP( DFP (Digital Flat Panel) 1.x compatibleBit 1 ~ 6: reserved.

Bit 6~5:video level: (in Vpp)00=0.7, 0.3, 01=0.714, 0.286, 10=1, 0.4 11=0.7, 0

Bit 4:1:blank-to-black setup

Bit 3:1: support separate syncs

Bit 2:1: support composite sync

Bit 1:1: support sync on green video

Bit 0:1: serration v-sync. Required when composite sync(bit 2). or sync-on-green video(bit 1) is used.

Basic Display Parameters(2/2)

Max. Horizontal Image Size (1 byte,15h) ：1~255(cm)

Max. Vertical Image size(1 byte,16h) ： 1~255(cm) Display Transfer Characteristic (Gamma) ：

1 byte, 17h V = (gamma x 100)-100

(gamma values range ： 1.00 ~ 3.54.)

Features(DPMS)

Feature Support (DPMS:Display Power Management Signaling)Bit 7 Standby:1. RGB guns off, power supply on 2. H-sync:OFF,V-sync:ON

Bit 6 Suspend:1. RGB guns off, power supply off 2. H-sync:ON,V-sync:OFF

Bit 5 active-off/low power ( No sync.)

Bit 4-3

display type. 00=monochrome, 01=RGB ,10=non RGB (e.g. R/G/Y), 11=undefined

Bit 2 1:sRGB standard default color space(HP,MS)

Bit 1 1: preferred timing mode : first detailed timing block.

Bit 0 1: default GTF(Generalized Timing Formula) supported

Color Characteristics

1. 19h~22h , 10 Bytes2. RGB White point x,y(base on CIE colorimetric

space)3. Binary value: accurate to +/- 0.0005 (MSB: 2^-1, ..., LSB: 2^-10) e.g. Binary Value:100111001, To Decimal:

0.6103516, Actual Value: 0.610

Established Timings

23h 1 bytes Established Timings 1 bit 7-0 ： 720×400@70 Hz ， 720×400@88 Hz ， 640×480@60 Hz ， 640×480@

67 Hz ， 640×480@72 Hz ， 640×480@75 Hz ， 800×600@56 Hz ， 800×600@60 Hz

24h 1 bytes Established Timings 2 bit 7-0 ： 800×600@72 Hz ， 800×600@75 Hz ， 832×624@75 Hz ， 1024×768

@87 Hz (Interlaced) ， 1024×768@60 Hz ， 1024×768@70 Hz ， 1024×768@75 Hz ， 1280×1024@75 Hz

25h 1 bytes Manufacturer's Reserved Timings 00h: nonebit 7 ： 1152x870 @ 75 Hz (Mac II ， Apple)bit 6~0 ： reserved.

Standard Timing Identification

Standard Timing Identification 1~8: each STI is 2 bytes

First Byte (Horizontal active pixels / 8) – 31Horizontal active pixels range ： 256 → 2288

Second Byte bit 7-6 ： Image Aspect ratio = (Horizontal active pixel) : (Vertical active pixel) 00=16 ： 10 ， 01=4 ： 3 ， 10=5 ：4 ， 11=16 ： 9 bit 5-0 ： Refresh Rate (Hz) – 60(Range ： 60 → 123Hz)

Detailed Timing Descriptions

Each 18 bytes

Monitor Descriptor Description

3 bytes Flag ： 000000h1 byte Data Type Tag1 byte Flag ： 00h13 byte Descriptor Data

Data Type Tag

FFh: Monitor S/N ( Stored as CP 437 in Descriptor Data ) FEh: ASCII String ( Stored as CP 437 in Descriptor Data ) FDh: Monitor range limits( Stored as binary coded in Descriptor

Data ), included Min./Max. Vertical(Hz)/Horizontal rate(kHz), Max. Supported Pixel Clock, GTF curve supported(GTF curve parameters ： C (offset), M (gradient), K(blanking time scaling factor) , J(scaling factor weighting). )

FCh: Monitor name(Stored as CP 437 in Descriptor Data) FBh: white point data (x,y , Gamma) FAh: Standard Timing Identifications F9h - 11h: undefined 10h: unused 0Fh - 00h: Defined by manufacturer.

Extension Flag

1 byte The number of (optional) Extension EDID

blocks to follow.e.g. CEA EDID Timing Extension Version 3

Checksum

1 byte This byte should be programmed such that the

sum of all 128 bytes equals 00h.

Others Timing information priority order

Priority GTF supported GTF not supported

1 Prefered Detailed Timing Prefered Detailed Timing

2 Other Detailed Timing if present.

Other Detailed Timing if present.

3 Standard Timing Standard Timing

4 GTF Timing Established Timing

5 Established Timing Default GTF mode

The End

Thank you.