TH-A30
1-28
TDA7449L (U7, U12) : Audio processor
1.Pin layout
2.Block diagram
0/30dB
2dB STEP
MUXOUTL
VOLUME
VOLUME
MUXOUTR
SPKR ATT
LEFT
LOUT
SCL
SDA
DIG_GND
ROUT
D98AU868
I
2
CBUS D LATCHES
100K
100K
G
L-IN1
L-IN2
100K
100K
R-IN1
R-IN2
G
INPUT MULTIPLEXER
+ GAIN
SPKR ATT
RIGHT
SUPPLY
CREF
AGND
V
S
5
8
9
7
6
19
20
18
4
2
3
11
1
10
V
REF
CREF
V
S
PGND
ROUT
LOUT
R_IN1
R_IN2
L_IN1
L_IN2
1
3
2
4
5
6
7
8
9
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
DIG_GND
SCL
SDA
20
19
18
17
16
14
15
13
12
MUXOUT(L)
10
MUXOUT(R)
11
TL3472 (RU2) : Op. amp.
1.Pin layout
1
2
3
4
8
7
6
5
1OUT
1IN±
1IN+
V
CC±
/GND
V
CC+
2OUT
2IN±
2IN+
Summary of Contents for TH-A30
Page 29: ...1 29 TH A30 M E M O ...
Page 38: ...H A B C D E F G 2 6 TH A30 TH A30 oard Switch board Display board d circuit boards ...
Page 39: ...A B C D E F G 2 7 TH A30 ain board Jack board ...
Page 40: ...H A B C D E F G 2 8 TH A30 TH A30 ader board Forward side DVD MPEG board Forward side ...
Page 41: ...A B C D E F G 2 9 TH A30 DVD loader board Reverse side VD MPEG board Reverse side ...
Page 42: ...H A B C D E F G 2 10 TH A30 TH A30 e side ard d side ...
Page 43: ...TH A30 M E M O ...
Page 65: ...TH A30 3 21 M E M O ...