LG 32MB25VQ, Service Manual

Page: 9 / 16

- 9 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
5.6. E2PROM Data Read
5.6.1. Signal TABLE
5.6.2. COMMAND SET
5.6.3. Use
Read E2PROM’s specific area as unit of 128(80h)-byte. (84h)
5.6.4 EDID Write
EEPROM access by using DDC2B protocol
■
1-Byte write
L : 0x00~0x7F
D : data
■
8-byte write
L : 0x00,0x10,….0x70
5.6.5. EDID Read
- DDC2B Command.(A0/A1)
- 128 Byte transfer of EDID Buffer of MICOM
6. Pattern for Adjustment
Pattern 0 : FULL BLACK (State of without video signal )
Pattern 1 : FULL WHITE (Don’t display other Character except
for White Pattern)
Pattern 3 : FULL WHITE
Pattern 4 : Cross hatch pattern (Horizontal 10Line, Vertcial
8Line) & Rectangle Pattern
Pattern 5 : 1 Dot on, 1 Dot off & Rectangle Pattern
Pattern 6 : Vertical Sync only input (Use signal cable of which
Pin #5 is GND)
Pattern 7 : Horizontal Sync only input (Use signal cable of
which Pin #5 is GND)
Pattern 8 : State of without Vertical/Horizontal Sync and Video
Signal. (Use signal cable of which Pin #5 is GND)
Pattern 9 : 8 Color Bar P 16 Gray Level Pattern
Pattern 10 : SMPTE Pattern
Pattern 11 : 16 Gray Step Pattern (700mV)
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