LG 27BK67U Service Manual page 15

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6.6.3 Use
2
Read E PROM's specific area as unit of 128(80h)‐byte. ( 84h )
6.6.4 EDID Write
EEPROM access by using DDC2B protocol
1‐Byte write
START A0
L : 0x00~0x7F
D : data
8‐byte write
START A0
L : 0x00,0x10,....0x70
6.6.5 EDID Read
DDC2B Command.(A0/A1)
START A0
‐ 128 Byte transfer of EDID Buffer of MICOM
A L A D
A
A L A Data1 A
A 00 START A1
80
A4 0
80
A6 0
80
A8 0
80
AA 0
80
AC 0
80
AE 0
80
STOP
.... A A
Data8
A Data1 . . .
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Copyright ©
Only training and service purposes.
1‐Page 80~FF Read
2‐Page 0~7F Read
2‐Page 80~FF Read
3‐Page 0~7F Read
3‐Page 80~FF Read
4‐Page 0~7F Read
4‐Page 80~FF Read
5‐Page 0~7F Read
5‐Page 80~FF Read
6‐Page 0~7F Read
6‐Page 80~FF Read
7‐Page 0~7F Read
7‐Page 80~FF Read
STOP
Data128 A CS A
LG Electronics Inc. All rights reserved.
STOP