JVC KS-FX621 Service Manual page 29

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3 7 63 1515 0
4.9 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
TE
L 13942296513
• Pin functions
Pin No. Symbol I/O
1 SDA I/O Serial data input/output.
2 GND -
3 OUTLR O output left rear.
4 OUTLF O output left front.
5 TL I
6 B2L -
7 B1L -
8 IVL I
9 ILL I
10 QSL O Output source selector. left channel.
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11 IDL -
12 MUTE -
13 ICL I
.
14 IMO -
15 IBL I
16 IAL I
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SCL
1 32
VCC
31
2
OUTRR
30
3
OUTRF
4 29
TR
28
5
B2R
27
6
B1R
7 26
25 IVR
8
ILR
24
9
QSR
10 23
22 IDR
11
Vref
21
12
ICR
13 20
CD-CH
19 CAP
14
IBR
18
15
TAPE
IAR
16 17
TUNER
10 8 9
21
POWER
31
SUPPLY
2
VOLUME 1
+20 to -31 dB
19
LOUDNESS
LEFT
16
15
13
11
SOURCE
SELECTOR
14
VOLUME 1
+20 to -31 dB
22 LOUDNESS
RIGHT
20
18
17
23 25 24
Functions
Ground.
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.
Not used
x ao
y
Not used
Input C left source.
i
Not used
Input B left source.
Input A left source.
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8
5
7 6 12
MUTE
FUNCTION
ZERO CROSS
DETECTOR
BASS
TREBLE
LEFT
LEFT
+15 dB
+12 dB
LOGIC
Q Q
3 6 7 1 3
BASS
TREBLE
RIGHT
RIGHT
+15 dB
+12 dB
26 27 28
Pin No. Symbol I/O
17 IAR
18 IBR
19 CAP
20 ICR
21 Vref
22 IDR
23 QSR
24 ILR
25 IVR
26 B1R
27 B2R
28 TR
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29 OUTRF O Output right front.
.
30 OUTRR O Output right rear.
31 Vcc
32 SCL
2 9 9 4 2 8
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
1 5 0 5 8 2 9 9 4
VOLUME 2
0 to -55dB
29
BALANCE
FENDER FRONT
VOLUME 2
30
0 to -55dB
BALANCE
FENDER REAR
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
m
output to an external equalizer.
I Treble control capacitor right channel or
co
input from an external equalizer.
- Supply voltage.
I Serial clock input.
KS-FX621
9 9
2 8 9 9
(No.49825)1-29