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KS-FX270
Description of major ICs
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
IDL
22
11
MUTE
21
12
ICL
20
13
CD-CH
IMD
19
14
IBL
18
15
TAPE
IAL
17
16
TUNER
3.Pin functions
Pin
Symbol I/O
No.
Serial data input/output.
1
SDA
I/O
2
Ground.
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
IDL
-
Not used
12
MUTE
-
Input C left source.
13
ICL
I
Not used
14
IMO
-
Input B left source.
15
IBL
I
Input A left source.
16
IAL
I
1-16
2.Block diagram
10
SCL
VCC
21
OUTRR
POWER
31
OUTRF
SUPPLY
2
TR
19
B2R
B1R
IVR
16
ILR
15
QSR
13
IDR
11
SOURCE
Vref
SELECTOR
14
ICR
22
CAP
20
IBR
18
IAR
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
IAR
Input A right source.
I
18
IBR
Input B right source.
19
-
CAP
Electronic filtering for supply.
20
I
ICR
Input C right source.
-
21
Vref
Reference voltage (0.5Vcc)
22
-
IDR
Not used
23
O
QSR
Output source selector right channel.
I
24
ILR
Input loudness right channel.
25
I
IVR
Input volume 1. right control part.
26
-
B1R
Bass control capacitor right channel
Bass control capacitor right channel or
O
27
B2R
output to an external equalizer.
Treble control capacitor right channel or
28
I
TR
input from an external equalizer.
29
O
Output right front.
OUTRF
O
Output right rear.
30
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
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