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JVC KD-SC900R Service Manual page 48

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KD-SC900R
4.18 TEA6320T-X (IC161) : E.volume
• Pin layout
SDA
GND
OUTLR
OUTLF
TL
B2L
B1L
IVL
ILL
QSL
IDL
MUTE
ICL
IMD
IBL
IAL
• Block diagram
21
31
19
16
15
13
11
22
20
18
17
• Pin functions
Pin
Symbol
I/O
No.
1
SDA
I/O Serial data input/output.
2
GND
-
3
OUTLR
O
4
OUTLF
O
5
TL
I
6
B2L
-
7
B1L
-
8
IVL
I
9
ILL
I
10
QSL
O
11
IDL
-
12
MUTE
-
13
ICL
I
14
IMO
-
15
IBL
I
16
IAL
I
1-48 (No.49829)
32
SCL
1
VCC
31
2
OUTRR
30
3
OUTRF
29
4
TR
28
5
B2R
27
6
B1R
26
7
IVR
25
8
ILR
24
9
QSR
23
10
IDR
22
11
Vref
21
12
ICR
20
13
CD-CH
CAP
19
14
IBR
15
18
TAPE
IAR
16
17
TUNER
10
8
9
POWER
SUPPLY
2
VOLUME 1
+20 to -31 dB
LOUDNESS
LEFT
SOURCE
SELECTOR
14
VOLUME 1
+20 to -31 dB
LOUDNESS
RIGHT
23
25
24
Functions
Ground.
output left rear.
output left front.
Treble control capacitor left channel
or input from an external equalizer.
Bass control capacitor left channel or
output to an external equalizer.
Bass control capacitor left channel.
Input volume 1. left control part.
Input loudness. left control part.
Output source selector. left channel.
Not used
Not used
Input C left source.
Not used
Input B left source.
Input A left source.
5
7 6
12
MUTE
FUNCTION
ZERO CROSS
DETECTOR
BASS
TREBLE
LEFT
LEFT
+15 dB
+12 dB
LOGIC
BASS
TREBLE
RIGHT
RIGHT
+15 dB
+12 dB
26 27
28
Pin
Symbol
No.
17
IAR
18
IBR
19
CAP
20
ICR
21
Vref
22
IDR
23
QSR
24
ILR
25
IVR
26
B1R
27
B2R
28
TR
29
OUTRF
30
OUTRR
31
Vcc
32
SCL
VOLUME 2
0 to 55 dB
3
BALANCE
FENDER REAR
VOLUME 2
0 to 55 dB
4
BALANCE
FENDER FRONT
32
HC BUS
REC
1
VOLUME 2
0 to -55dB
29
BALANCE
FENDER FRONT
VOLUME 2
30
0 to -55dB
BALANCE
FENDER REAR
I/O
Functions
I
Input A right source.
I
Input B right source.
-
Electronic filtering for supply.
I
Input C right source.
-
Reference voltage (0.5Vcc)
-
Not used
O
Output source selector right channel.
I
Input loudness right channel.
I
Input volume 1. right control part.
-
Bass control capacitor right channel
O
Bass control capacitor right channel
or output to an external equalizer.
I
Treble control capacitor right channel
or input from an external equalizer.
O
Output right front.
O
Output right rear.
-
Supply voltage.
I
Serial clock input.

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