Pioneer DVR-233-S Service Manual page 68

1
MM1657XJBE (JCKB ASSY : IC402)
• 3 system input Video Switcher with I2C BUS
A
Block Diagram
B
C
D
Pin Function
No. Pin Name
1 Cin 1 Chroma Signal Input 1
2 GND Front input terminal of ch2
Cin 2
3 Chroma Signal Input 2
GND
4 Tuner input terminal of ch2
5 Cin 3 Chroma Signal Input 3
6 BIAS BIAS
7 Vin 1 Video Signal Input 1
E
8 GND GND
9 Vin 2 Video Signal Input 2
10 GND GND
11 Vin 3 Video Signal Input 3
12 GND GND
F
68
1
2
Function No.
13
14
15
16
17
18
19
20
21
22
23
24
DVR-231-S
2
3
Pin Name
Yin 1 Video Signal Input (Y) 1
GND GND
Yin 2 Video Signal Input (Y) 2
GND
GND
Yin 3 Video Signal Input (Y) 3
GND GND
V/Y OUT V/Y Signal Output
C OUT C Signal Output
Address Address Select
SDA DATA input/output of I2C BUS
SCL CLK input of I2C BUS
Vcc Vcc
3
4
Function
4