JVC RX-8010RBK Service Manual page 27

TC9459F (IC381, IC382, IC383) : Electronic volume control
1.Terminal layout
1 24
VSS
2 23
L-OUT
NC 3 22
L-IN 4 21
L-ch
L-LD1 5 20
6 19
L-LD2
7 18
L-A-GND
8 17
NC
9 16
CS1
NC 10 15
GND 11 14
CK 12 13
3.Pin function
Pin No. Symbol
1 VSS
2 L-OUT
3 NC
4 NC
5 L-LD1
6 L-LD2
7 L-A-GND
8 NC
9 CS1
10 NC
11 GND
12 CK
2. Block diagram
VDD
L-OUT
R-OUT
NC
R-IN
L-1N
R-ch
R-LD1
R-LD2 L-LD1
R-A-GND
L-LD2
NC
CS2
L-A-GND
NC
STB
DATA
CS1
GND
Function
Negative power supply pin
Volume output pin
No connection
No connection
Loudness tap output pin
Loudness tap output pin
Analog GND pin
No connection
Chip select input pin
No connection
Digital GND pin
Clock input pin
VSS
1
2
3
NC
50k /
915TEP
4
VR
5
6
7
8
NC
L-ch 7 to 91
decoder
L-ch data
latch circuit
Shift register (24BIT)
Level shift circuit
9
NC
10
11
CK
12
Pin No. Symbol
13 DATA
14 STB
15 NC
16 CS2
17 NC
18 R-A-GND
19 R-LD2
20 R-LD1
21 R-IN
22 NC
23 R-OUT
24 VDD
RX-8010RBK/ RX-8012RSL
VDD
24
R-OUT
23
NC
22
R-IN
21
Same as L-ch
R-LD1
20
Circuit
R-LD2
19
R-A-GND
18
NC
17
R-ch 7 to 91
decoder
R-ch data
latch circuit
16 CS2
15 NC
STB
14
13 DATA
Function
Data input pin
Strobe input pin
No connection
Chip select input pin
No connection
Analog GND pin
Loudness tap output pin
Loudness tap output pin
Volume input pin
No connection
Volume output pin
Positive power supply pin
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