Service manual

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F. Command definition :
PC Host will send 0x7C IIC slave address and then following 4 bytes command
I2C Send Command Byte1
Byte
2
Byte
3 Byte4 OK N.A. Remark
Write Contrast to MCU RAM CA 55 Data
cksu
m 
Write data to MCU RAM
and update the related
register to refresh the
screen immediately.
Don’t store data to
EEPROM.
Write Brightness to MCU RAM CA 56 Data
cksu
m 
Write Red Gain to MCU RAM CA 57 Data
cksu
m 
Write Green Gain to MCU RAM CA 58 Data
cksu
m 
Write Blue Gain to MCU RAM CA 59 Data
cksu
m 
Read Contrast from MCU RAM C3 55 XX
cksu
m 
Read Brightness from MCU RAM C3 56 XX
cksu
m 
Read Red Gain from MCU RAM by
color index C3 57 XX
cksu
m 
Base on current color
index to read back the
right gain value.
Read Green Gain from MCU RAM by
color index C3 58 XX
cksu
m 
Read Blue Gain from MCU RAM by
color index C3 59 XX
cksu
m 
Write C1 (Bluish) R-Gain Data to
EEPROM AA 3C Data
cksu
m 
Write C1 (Bluish) G-Gain Data to
EEPROM AA 3D Data
cksu
m 
Write C1 (Bluish) B-Gain Data to
EEPROM AA 3E Data
cksu
m 
Write C2 (sRGB) R-Gain Data to
EEPROM AA 4C Data
cksu
m

Write C2 (sRGB) G-Gain Data to
EEPROM AA 4D Data
cksu
m 
Write C2 (sRGB) B-Gain Data to
EEPROM AA 4E Data
cksu
m 
Write C3 (Reddish) R-Gain Data to
EEPROM AA 5C Data
cksu
m

Write C3 (Reddish) G-Gain Data to
EEPROM AA 5D Data
cksu
m 
Write C3 (Reddish) B-Gain Data to
EEPROM AA 5E Data
cksu
m 
Write User R-Gain Data to EEPROM AA 6C Data
cksu
m

Write User G-Gain Data to EEPROM AA 6D Data
cksu
m 
Write User B-Gain Data to EEPROM AA 6E Data
cksu
m 