JVC MX-K1 Service Manual page 28

MX-K1
TDA7440D (IC101) : Audio processor
1. Terminal layout
RIN3
RIN2
RIN1
LIN1
LIN2
LIN3
LIN4
MUXO-L
IN(L)
MUXO-R
IN(R)
BIN(R)
BOUT(R)
BIN(L)
2. Block diagram
4
LIN1
100K
5
LIN2
100K
6
LIN3
100K
7
LIN4
100K
3
RIN1
100K
2
RIN2
100K
1
RIN3
100K
28
RIN4
100K
1-28
1 28 RIN4
2 27 LOUT
3 26 ROUT
4 25 AGND
5 24 VS
6 23 CREF
7 22 SDA
8 21 SCL
9 20 DGND
10 19 TRE(R)
11 18 TRE(L)
12 17 N.C.
13 16 N.C.
14 15 BOUT(L)
MUXO-L IN(L)
8 9
G VOLUME
0/30dB
2
I
2dB STEP
G VOLUME
INPUT MULTIPLEXER
+ GAIN
10 11
MUXO-R IN(R)
TRE(L) BIN(L) BOUT(L)
18 14 15
R
B
SPKR ATT
TREBLE BASS
LEFT
CBUS DECODER + LATCHES
SPKR ATT
TREBLE BASS
RIGHT
V
REF
SUPPLY
R
B
19 12 13
TRE(R) BIN(R) BOUT(R)
27
LOUT
21
SCL
22
SDA
20
DGND
26
ROUT
24
VS
25
AGND
23
CREF