JVC RX-7000RBK, Руководство по обслуживанию

Страница: 23 / 126

1-23
RX-7000RBK
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
VSS
L-OUT
NC
L-IN
L-LD1
L-LD2
L-A-GND
NC
CS1
NC
GND
CK
L-ch
VDD
R-OUT
NC
R-IN
R-LD1
R-LD2
R-A-GND
NC
CS2
NC
STB
DATA
R-ch
1.Pin layout
1 24
2
3
4
5
6
7
8
9
10
11
12
16
15
14
13
CS2
NC
STB
DATA
CS1
NC
GND
CK
L-OUT
NC
L-1N
L-LD1
L-LD2
L-A-GND
NC
23
22
21
20
19
18
17
R-OUT
NC
R-IN
R-LD1
R-LD2
R-A-GND
NC
Same as L-ch
Circuit
R-ch 7 to 91
decoder
R-ch data
latch circuit L-ch 7 to 91
decoder
L-ch data
latch circuit
Shift register (24BIT)
Level shift circuit
VR
VSS
VDD
2. Block diagram
3.Pin function
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
Symbol
VSS
L-OUT
NC
NC
L-LD1
L-LD2
L-A-GND
NC
CS1
NC
NC
CK
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
No connection
Data transfer clock input
Pin No.
13
14
15
16
17
18
19
20
21
22
23
24
Symbol
DATA
STB
NC
CS2
NC
R-A-GND
R-LD2
R-LD1
R-IN
NC
R-OUT
VDD
Function
Volume setup serial data input
Data write strobe input
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
TC9459F (IC331,IC332,IC333) : Electronic volume control
50k /
91 STEP