BenQ G2220HD - Command Definition

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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 NA Remark
Write Contrast to MCU RAM CA 55 Data cksum
√
Write Brightness to MCU RAM CA 56 Data cksum
√
Write Red Gain to MCU RAM CA 57 Data cksum
√
Write Green Gain to MCU RAM CA 58 Data cksum
√
Write Blue Gain to MCU RAM CA 59 Data cksum √
Write data to MCU RAM
and update the related
register to refresh the
screen immediately.
Don’t store data to
EEPROM.
Read Contrast from MCU RAM C3 55 XX cksum
√
Read Brightness from MCU RAM C3 56 XX cksum
√
Read Red Gain from MCU RAM by
color index C3 57 XX cksum √
Read Green Gain from MCU RAM by
color index C3 58 XX cksum √
Read Blue Gain from MCU RAM by
color index C3 59 XX cksum √
Base on current color
index to read back the
right gain value.
Write C1 (Bluish) R-Gain Data to
EEPROM AA 3C Data cksum √
Write C1 (Bluish) G-Gain Data to
EEPROM AA 3D Data cksum √
Write C1 (Bluish) B-Gain Data to
EEPROM AA 3E Data cksum √
Write C2 (sRGB) R-Gain Data to
EEPROM AA 4C Data cksum √
Write C2 (sRGB) G-Gain Data to
EEPROM AA 4D Data cksum √
Write C2 (sRGB) B-Gain Data to
EEPROM AA 4E Data cksum √
Write C3 (Reddish) R-Gain Data to
EEPROM AA 5C Data cksum √
Write C3 (Reddish) G-Gain Data to
EEPROM AA 5D Data cksum √
Write C3 (Reddish) B-Gain Data to
EEPROM AA 5E Data cksum √
Write User R-Gain Data to EEPROM AA 6C Data cksum
√
Write User G-Gain Data to EEPROM AA 6D Data cksum
√
Write User B-Gain Data to EEPROM AA 6E Data cksum
√
Write Cx R-Gain Data to EEPROM AA 7C Data cksum
√
Write Cx G-Gain Data to EEPROM AA 7D Data cksum
√
Write Cx B-Gain Data to EEPROM AA 7E Data cksum
√
Reserved for some
model have extra color
temperature
Write Contrast to EEPROM AA 92 Data
cksum
√
Write Brightness to EEPROM
AA
93 Data
cksum
√
Write C/T index to EEPROM
AA
94 1~4
cksum √
1=C1/9300/Bluish,
2=C2/6500/sRGB/,
3=C3/5800/Reddish,
4=User, 5=Cx
Write OSD-Hpos to EEPROM
AA
95 Data
cksum
√