1 - 28
1.5.2
DDC2BI/DDC CI function (only DVI-I connector side)
Function
With the DDC2BI or DDC CI function, data in the initialization EEPROM can be communicated
with multiple functions such as external direct read & write, DDC2BI, DDC CI, etc., using the
DDC communication line. This is possible only when the monitor power is ON.
Function
This is an interface with the initialization EEPROM (IC100), and the data is read/written with
I2C communication.
The microcomputer (IC102) has two I/F ports of IIC bus. DDC communication is carried out
using these ports.
This LCD monitor has specifications to support DDC2BI/DDC CI, and is adjusted to the DDC CI
I/F specifications as the default. The communication speed is 100kbyte/sec max.
µ
-COM Pin No.
23
22
I/O
I/O
I
Signal name
Remarks
Function
DDC_SDA
DDC_SCL
DVI-I connector
DVI-I connector
DDC communication data
DDC communication clock
List of control signals
µ
-COM Pin No.
62
61
I/O
I/O
I
Signal name
Remarks
Function
EEP_SDA
EEP_SCL
24LC64T-I/SN
24LC64T-I/SN
Initialization EEPROM communication data
Initialization EEPROM communication clock
List of control signals
DDC_SCL
SCL
IC102 (MPU)
SDA
DDC_SDA
22
23
IC100
24LC64T-I/SN
61
62
EEP_SDA
EEP_SCL
Summary of Contents for LCD1550X-BK
Page 88: ...SCHEMATIC DIAGRAM POWER LCD1550X Normal Power Save 1ch Pin 4 2ch Pin 1 3ch Pin 2 4ch Pin 5 ...
Page 89: ...SCHEMATIC DIAGRAM PWB MAIN POWER LCD1550X ...
Page 90: ...SCHEMATIC DIAGRAM PWB MAIN INPUT LCD1550X ...
Page 91: ...SCHEMATIC DIAGRAM PWB MAIN SYNC LCD1550X ...
Page 92: ...SCHEMATIC DIAGRAM PWB MAIN TMDS LCD1550X ...
Page 96: ...SCHEMATIC DIAGRAM PWB MAIN ASIC LCD1550X ...
Page 97: ...SCHEMATIC DIAGRAM INVERTER LCD1550X 1ch Q701 B 2ch Q702 B ...
Page 98: ...SCHEMATIC DIAGRAM PWB SW LCD1550X ...
Page 100: ...SCHEMATIC DIAGRAM POWER LCD1550X ...
Page 101: ...SCHEMATIC DIAGRAM PWB MAIN POWER LCD1550X ...
Page 102: ...SCHEMATIC DIAGRAM PWB MAIN INPUT LCD1550X ...
Page 103: ...SCHEMATIC DIAGRAM PWB MAIN SYNC LCD1550X ...
Page 104: ...SCHEMATIC DIAGRAM PWB MAIN TMDS LCD1550X ...
Page 105: ...SCHEMATIC DIAGRAM PWB MAIN MC LCD1550X ...
Page 106: ...SCHEMATIC DIAGRAM PWB MAIN ASIC LCD1550X ...
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