Sanyo 1 122 121 00 Service Manual page 43

Control Port Functions
● IIC Bus DA Converter (IC2161) Port Functions
Pin No. Name
1 R
2 SCL
3 SDA
4 AO7
5 AO8
6 AO9
7 AO10
8 AO11
9 AO12
10 VrefL
11 VrefU1
12 GND
13 VrefU2
14 AO1
15 AO2
16 AO3
17 AO4
18 AO5
19 Ao6
20 Vcc
21 Vdd
22 CS2
23 CS1
24 CS0
● IIC Bus DA Converter (IC1581) Port Functions
Pin No. Name
1 R
2 SCL
3 SDA
4 AO7
5 AO8
6 AO9
7 AO10
8 AO11
9 AO12
10 VrefL
11 VrefU1
12 GND
13 VrefU2
14 AO1
15 AO2
16 AO3
17 AO4
18 AO5
19 AO6
20 Vcc
21 Vdd
22 CS2
23 CS1
24 CS0
● IIC Bus DA Converter (IC2571) Port Functions
Pin No. Name
1 R
2 SCL
3 SDA
4 AO5
5 AO6
6 AO7
7 AO8
8 VrefL
9 VrefU1
10 GND
11 VrefU2
12 AO1
13 AO2
14 AO3
15 AO4
16 Vcc
17 Vdd
18 CS2
19 CS1
20 CS0
Function
Reset
IIC SCL
IIC SDA
RCLP
GCLP
BCLP
AV/PC
SYNC_SW
G_BLK_DC
GND
SCP SW
BLANK SW
MACRO
CBAL_SW
B_BLK_DC
R_BLK_DC
Digital power supply
Analo gpower supply
Chip Select 2
Chip Select 1
Chip Select 0
Function
Reset
IIC SCL
IIC SDA
REF_B
REF_G
REF_R
Not used
Not used
Not used
GND
B-CENT
G-CENT
R-CENT
DWN
RGT
XRGT
Digital power supply
Analog power supply
Chip Select 2
Chip Select 1
Chip Select 0
Function
Reset
IIC SCL
IIC SDA
Not used
VCOMR
VCOMG
VCOMB
GND
NRSB
NRSA
Not used
Not used
5 V
5 V
Chip Select 2
Chip Select 1
Chip Select 0
Action
Fixed "H"
Active "L"
Active "L"
R Signal clamp reference voltage
G Signal clamp reference voltage
B Signal clamp reference voltage
AV/PC switch (L: AV H: PC)
Fixed "H"
Video G signal pedestal voltage
D/A converter lower ref. voltage
D/A converter upper ref. voltage (CH7~CH12)
GND
D/A converter upper ref. voltage(CH1~CH6)
Sandcastle pulse SW Video/S-Video/480i/575i: L else: H
H Blank width SW 1080i/1035i/720p/480p/575p: H else: L
H: PC, AV(1080i50Hz) L: AV
Color uniformity correction SW
Video B signal pedestal voltage
Video R signal pedestal voltage
Vcc(5V)
Vcc(5V)
Fixed "L"
Fixed "H"
Fixed "H"
Action
Fixed "H"
Active "L"
Active "L"
D/A reference voltage
D/A reference voltage
D/A reference voltage
0V fixed
0V fixed
0V fixed
D/A converter lower ref. voltage
D/A converter upper ref. voltage (CH7~CH12)
GND
D/A converter upper ref. voltage (CH1~CH6)
Video center voltage
Video center voltage
Video center voltage
Panel control signal
Panel control signal
Panel control signal
Vcc(5V)
Vcc(5V)
Fixed "L"
Fixed "L"
Fixed "L"
Action
Fixed "H"
Active "L"
Active "L"
D/A converter lower ref. voltage
D/A converter upper ref. voltage (CH5~CH8)
GND
D/A converter upper ref. voltage (CH1~CH4)
Vcc(5V)
Vdd(5V)
Fixed "L"
Fixed "L"
Fixed "H"
-43-
Connected to GND
Vcc(5V)
Vcc(5V)
Connected to GND
Vcc(5V)
Vcc(5V)
Connected to GND
Connected to Vcc
Connected to Vcc