JVC KD-S871R Service Manual page 30

KD-S871R
TEA6320T-X (IC161) : E.volume
1.Pin layout
SDA 32
1
GND 31
2
OUTLR 30
3
OUTLF 29
4
TL 28
5
B2L 27
6
B1L 26
7
IVL 25
8
ILL 24
9
QSL 23
10
22
11
21
12
INCDCHL 20
13
CD-CH
IMD 19
14
INTUL 18
15
TAPE
INCDL 17
16
TUNER
3.Pin functions
Pin
Symbol I/O
No.
Serial data input/output.
1
SDA I/O
Ground.
2 GND -
output left rear.
3
OUTLR O
output left front.
4
OUTLF O
Treble control capacitor left channel or
5 TL I
input from an external equalizer.
Bass control capacitor left channel or
6
B2L -
output to an external equalizer.
Bass control capacitor left channel.
7
B1L -
Input volume 1. left control part.
8 IVL I
Input loudness. left control part.
9
ILL I
Output source selector. left channel.
10
QSL O
Not used
11 -
Not used
12
-
Input C left source.
13
I
INCDCHL
Not used
14 IMO -
15 Input B left source.
INTUL I
Input A left source.
16
INCDL I
1-30
2.Block diagram
10
SCL
VCC
OUTRR
OUTRF
21
TR
31 POWER
SUPPLY
B2R
2
B1R
19
IVR
ILR
QSR
16
15
Vref
13
INCDCHR
11
CAP
SOURCE
INTUR
SELECTOR
14
INCDR
22
20
18
17
23
Functions
8 9 7 6
VOLUME 1
BASS
TREBLE
+20 to -31 dB
LEFT
LOUDNESS
+15 dB
+12 dB
LEFT
LOGIC
VOLUME 1
BASS
TREBLE
+20 to -31 dB
RIGHT
RIGHT
LOUDNESS
+15 dB
+12 dB
RIGHT
25 24 26 27
Pin
Symbol I/O
No.
17 I
INCDR Input A right source.
I
18
INTUR Input B right source.
-
19
CAP Electronic filtering for supply.
20 I
Input C right source.
INCDCHR
-
21
Vref Reference voltage (0.5Vcc)
-
22
Not used
23 O
QSR Output source selector right channel.
I
24
ILR Input loudness right channel.
I
25
IVR Input volume 1. right control part.
26 -
B1R Bass control capacitor right channel
Bass control capacitor right channel or
27 O
B2R
output to an external equalizer.
Treble control capacitor right channel or
I
28
TR
input from an external equalizer.
29 O Output right front.
OUTRF
30 O Output right rear.
OUTRR
- Supply voltage.
31
Vcc
32 I Serial clock input.
SCL
5 12
VOLUME 2
MUTE
0 to 55 dB
FUNCTION
BALANCE
ZERO CROSS
FENDER REAR
DETECTOR
VOLUME 2
LEFT
0 to 55 dB
BALANCE
FENDER FRONT
HC BUS
REC
VOLUME 2
0 to -55dB
BALANCE
FENDER FRONT
VOLUME 2
0 to -55dB
BALANCE
FENDER REAR
28
Functions
3
4
32
1
29
30