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MX-G68V/MX-G65V
TDA7442D (FIC1) : Audio processor
1.Pin layout
R_IN3
1
R_IN2
2
R_IN1
3
L_IN1
4
L_IN2
5
L_IN3
6
L_IN4
7
MUXOUTL
8
IN(L)
9
MUXOUT(R)
10
IN(R)
11
BIN(R)
12
BOUT(R)
13
BIN(L)
14
2.Block diagram
0.47 F
4
L-IN1
50K
0.47 F
5
L-IN2
50K
0.47 F
6
L-IN3
50K
0.47 F
7
L-IN4
50K
0.47 F
3
R-IN1
50K
0.47 F
2
R-IN2
50K
0.47 F
1
R-IN3
50K
0.47 F
28
R-IN4
50K
1-44
28
R_IN4
27
LOUT
26
ROUT
25
AGND
24
V
S
23
CREF
22
SDA
21
SCL
20
DIG-GND
19
TREBLE(R)
18
TREBLE(L)
17
PS1
16
LP
15
BOUT(L)
100nF
2.2 F
MUXOUT(L)
PS1
31.5dB
8
9
17
control
RPS1
30K
PS1
90Hz
-
SYMULATED
+
+
L+R
MUSIC
-
L-R
+
LPF
9KHz
30K
31.5dB
control
10
11
16
MUXOUT(R)
LP
2.2 F
5.6nF
TREBLE-L
18
OFF
SURR
MUSIC/
SYMULATED
MIXING
TREBLE
AMP
OFF
I 2 C BUS DECODER + LATCHES
TREBLE
EFFECT
MIXING
CONTROL
AMP
SURR
OFF
Vref
SUPPLY
24
25
23
19
V S
CREF
TREBLE-R
BIN(R)
1.2nF
22 F
5.6nF
5.6K
100nF
100nF
BIN(L)
BOUT(L)
14
15
RB
FIX
79dB CONTROL
SPKR
-
VAR
ATT
+
FIX
MUTE
BASS
BASS
FIX
SPKR
+
VAR
ATT
-
MUTE
79dB CONTROL
RB
12
13
D98AU947A
BOUT(R)
100nF
100nF
5.6K
27
LOUT
21
SCL
22
SDA
20
DIG GND
26
ROUT
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