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ViewSonic Corporation
Confidential - Do Not Copy
VP2650wb-1
31
F. Command definition
PC Host will send 0x7C IIC slave address and then following 4 bytes command
I2C Send Command
Byte1 Byte2 Byte3 Byte4
Must
Don’t
care
Note
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.
Write
s-Brightness
data
CA
9C Data cksum
?
Set brightness default of
PWM( may not match OSD)
<Note H>
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.
Read F/W version from MCU’s constant
definition
C3
5A
XX cksum
√
Please see
<Note F>
for detail
implementation
Read panel vender from MCU’s constant
definition
C3
5B
XX cksum
√
Please see
<Note G>
for detail
implementation
Read Product ID
C3
5C
XX cksum
√
Reply EDID(analog if dual
inputs) address 0A
Read
s-Brightness
data
C3
9C
XX cksum
?
Set brightness default of
PWM( may not match OSD)
<Note H>
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
X
Write User G-Gain Data to EEPROM
AA
6D Data cksum
X
Write User B-Gain Data to EEPROM
AA
6E Data cksum
X
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
√
By
mode
l
Reserved for some model have
extra color temperature
Write Cx2 R-Gain Data to EEPROM
AA
8C Data Cksum
√
Write Cx2 R-Gain Data to EEPROM
AA
8D Data Cksum
√
Write Cx2 R-Gain Data to EEPROM
AA
8E Data Cksum
√
Write Contrast to EEPROM
AA
92 Data Cksum
X
Write Brightness to EEPROM
AA
93 Data Cksum
X
Write C/T index to EEPROM
AA
94
1~6 cksum
√
1=C1/9300/Bluish,
2=C2/6500/sRGB/,
3=C3/5500/Reddish,
4=User, 5=Cx, 6=Cx2
Write OSD-Hpos to EEPROM
AA
95 Data cksum
X
Write OSD-Vpos to EEPROM
AA
96 Data cksum
X
Summary of Contents for VP2650WB - 26" LCD Monitor
Page 42: ...ViewSonic Corporation Confidential Do Not Copy VP2650wb 1 39 Step4 Step 5 Step 6 ...
Page 43: ...ViewSonic Corporation Confidential Do Not Copy VP2650wb 1 40 Step 7 Step 8 Step 9 ...
Page 44: ...ViewSonic Corporation Confidential Do Not Copy VP2650wb 1 41 Step 10 Step 11 ...
Page 51: ...ViewSonic Corporation Confidential Do Not Copy VP2650wb 1 48 4 Packing procedure ...
Page 53: ...ViewSonic Corporation Confidential Do Not Copy VP2650wb 1 50 6 Troubleshooting Flow Chart ...
Page 54: ...ViewSonic Corporation Confidential Do Not Copy VP2650wb 1 51 ...
Page 55: ...ViewSonic Corporation Confidential Do Not Copy VP2650wb 1 52 ...
Page 56: ...ViewSonic Corporation Confidential Do Not Copy VP2650wb 1 53 5 Power no work troubleshooting ...
Page 57: ...ViewSonic Corporation Confidential Do Not Copy VP2650wb 1 54 Power no PFC troubleshooting ...
Page 58: ...ViewSonic Corporation Confidential Do Not Copy VP2650wb 1 55 6 Transmitter Board ...
Page 76: ...9 PCB Layout Diagrams ViewSonic Corporation Confidential Do Not Copy VP2650wb 1 73 ...
Page 77: ...ViewSonic Corporation Confidential Do Not Copy VP2650wb 1 74 ...
Page 78: ...ViewSonic Corporation Confidential Do Not Copy VP2650wb 1 75 ...
Page 79: ...ViewSonic Corporation Confidential Do Not Copy VP2650wb 1 76 ...