LG 32LG32R - Page 13

LGE Internal Use OnlyCopyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 13 -
8. DDC command protocol
8-1. Signal TABLE
8-2. E2PROM Data Write
(1) Signal TABLE
LEN : 84h+Bytes
CMD : E8h
ADH : E2PROM Slave Address (A0,A2,A4,A6), Not 00h
(Reserved by BufferToEEPROM)
ADL : E2PROM Sub Address(00~FF)
Data : Write data
Delay : 20ms
(2) Command Set
* Purpose
1) EDID write : 16-byte by 16-byte, 8 order (128-byte)
write(TO “00 – 7F” of “EEPROM Page A4”).
2) FOS Default write : 14-mode data write
(SyncFlags, HPeriodH, HPeriodL, VtotalH, VtotalL,
SrcHTotalH, SrcHTotalL, SrcHStartH, SrcHStartL,
SrcVStartH, SrcVStartL, HsyncPhase).
3) Random Data write : write the appointment Address of
E2PROM.
(3) E2PROM Data Read
1) Signal TABLE
2) COMMAND SET
* Purpose : To read(84h) the appointment Address of E2PROM
by 128(80h)-byte
Delay 20m
VAL
128 Bytes
Delay 150ms
EEPROM WRITE E8h 94 16-Byte Write
(84+n)h n-byte Write
Adjustment contents CMD(hex) LEN Details
EEPROM READ E7 A0 0 0-Page 0~7F Read
80 0-Page 80~FF Read
A2 0 1-Page 0~7F Read
80 1-Page 80~FF Read
A4 0 2-Page 0~7F Read
80 2-Page 80~FF Read
A6 0 3-Page 0~7F Read
80 3-Page 80~FF Read
Adjustment contents CMD(hex) ADH(hex) ADL(hex) Details
All manuals and user guides at all-guides.com