JVC RX-7030VBK, Руководство по обслуживанию

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1-38 (No.22058)
4.29 TC9459F-X (IC381 to IC384) : Electronic volume control
• Pin layout • Pin function
• Pin function
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 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
Pin No. Symbol Function
1 VSS Negative power supply pin
2 L-OUT Volume output pin
3 NC No connection
4 NC No connection
5 L-LD1 Loudness tap output pin
6 L-LD2 Loudness tap output pin
7 L-A-GND Analog GND pin
8 NC No connection
9 CS1 Chip select input pin
10 NC No connection
11 NC No connection
12 CK Clock input pin
13 DATA Data input pin
14 STB Strobe input pin
15 NC No connection
16 CS2 Chip select input pin
17 NC No connection
18 R-A-GND Analog GND pin
19 R-LD2 Loudness tap output pin
20 R-LD1 Loudness tap output pin
21 R-IN Volume input pin
22 NC No connection
23 R-OUT Volume output pin
24 VDD Positive power supply pin
Pin No. Symbol Function