Pioneer DVR-231-S Service Manual page 68

1
MM1657XJBE (JCKB ASSY : IC402)
QQ
3 7 63 1515 0
• 3 system input Video Switcher with I2C BUS
A
Block Diagram
B
C
TE
L 13942296513
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
GND
10 GND
11 Vin 3 Video Signal Input 3
12 GND GND
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2
Function
x ao
y
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DVR-231-S
2
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3
8
Q Q
3 6 7 1 3
No. Pin Name
13 Yin 1 Video Signal Input (Y) 1
14 GND GND
15 Yin 2 Video Signal Input (Y) 2
GND
16 GND
17 Yin 3 Video Signal Input (Y) 3
18 GND GND
19 V/Y OUT V/Y Signal Output
20 C OUT C Signal Output
21 Address Address Select
SDA
22 DATA input/output of I2C BUS
23 SCL CLK input of I2C BUS
24 Vcc Vcc
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3
4
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
Function
m
co
4
9 9
2 8 9 9