LG 32LF15R - DDC Command Set; DDC Command Protocol

LGE Internal Use OnlyCopyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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** DDC Command set **
5. DDC command protocol
5.1. Signal TABLE
5.2. E
2
PROM 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).
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
E
2
PROM.
(3) E2PROM Data Read
1) Signal TABLE
2) COMMAND SET
* Purpose : To read(84h) the appointment Address of E2PROM
by 128(80h)-byte
Adjustment
Aging On/Off
Input select
R GAIN
G GAIN
B GAIN
R GAIN
G GAIN
B GAIN
R GAIN
G GAIN
B GAIN
CSM mode
AUTO ADC
EEPROM Read
EEPROMWrite
CMD(HEX)
F3
F4
16
18
1A
16
18
1A
16
18
1A
F2
F1
E7
E8
ADR
00
00
00
01
02
00
00
00
00
VALUE
FF/00
00 - C0
00 - C0
00 - C0
00 - C0
00 - C0
00 - C0
00 - C0
00 - C0
00 - C0
00
01
02
0, 1, 2
00
data
detail
FF : ON / OO : OFF
0x10 : TV
0x20 : AV1
0x21 : AV2
0x40 : Component1
GAIN adjustment
CSM COOL
GAIN adjustment
CSM NORMAL
GAIN adjustment
CSM WARM
COOL
NORMAL
WARM
0: Offset adjustment
1: Gain adjustment
2: Offset and Gain adjustment
EEPROM read
EEPROM write
Delay 20m
VAL
EEPROM WRITE E8h 94 16-Byte Write
(84+n)h n-byte Write
Adjustment contents CMD(hex) LEN Details
128 Bytes
Delay 150ms
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