LG FLATRON 27UD68WG - Page 31

- 31 -
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Only for training and service purposes
LGE Internal Use Only
6.6 E
2
PROM Data Read
6.6.1 Signal TABLE
----------------------------------------------------------------------
128 Bytes
6.6.2 COMMAND SET
No.
Adjustment contents CMD(hex
)
ADH(hex) ADL(hex) Explanation
1 EEPROM READ E7 A0 0 0-Page 0~7F Read
2 80 0-Page 80~FF Read
3 A2 0 1-Page 0~7F Read
4 80 1-Page 80~FF Read
5 A4 0 2-Page 0~7F Read
6 80 2-Page 80~FF Read
7 A6 0 3-Page 0~7F Read
8 80 3-Page 80~FF Read
9 A8 0 4-Page 0~7F Read
10 80 4-Page 80~FF Read
11 AA 0 5-Page 0~7F Read
12 80 5-Page 80~FF Read
13 AC 0 6-Page 0~7F Read
14 80 6-Page 80~FF Read
15 AE 0 7-Page 0~7F Read
16 80 7-Page 80~FF Read
6.6.3 Use
 Read E
2
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
L : 0x00~0x7F
D : data
 8-byte write
L : 0x00,0x10,….0x70
STOP
A A D1 6F
STOP
START
A
A
A
Dn
A A A 50 6E 03 CMD ADH84 START A A ADL A CS
Delay 150ms
STOP
STOP
AAA
A
A
L
L
A0
A0 ….
Data8
D
Data1
START
START A
A
A