Samsung Electronics
9-7
Block Diagrams
TDA7318 : FIC1
KA22271B : DIC1
VOL
BASS
TREBLE
I C BUS DECODER LATCIIES
2
15
14
13
12
L1
L2
L3
L4
8
9
10
11
R4
R3
R2
R1
SUPPLY
VCC
AGND
CREF
2
3
1
7
6
OUT(R)
IN(R)
OUT(L)
IN(L)
17
16
19
18
BOUT(L)
BIN(L)
TREBLE(L)
4
SPKR
ATT
MUTE
SPKR
ATT
MUTE
25
23
28
27
26
24
22
21
20
5
VOL
BASS
TREBLE
SPKR
ATT
MUTE
SPKR
ATT
MUTE
INPUT
SELECTOR
GAIN
R8
R8
B OUT(R)
B IN(R) TREBLE(R)
OUT
LEFT REAR
RIGHT REAR
OUT
RIGHT FRONT
OUT
SCL
SDA
DIGGND
LEFT FRONT
OUT
BUS
BUFFER
BUFFER
VCA & HPF
RMS
DETECTOR
GND
7
R/P SW
4
NR SW
13
R/R
12
Vcc
10
CONTROL
SWITCH
VOLTAGE
REGULATOR
8
REC IN1
PB 1N1
6
PB OUT1
3
GAIN
FACTOR
RMS
DETECTOR
VCA & HPF
1
16
15
5
2
9
11
REC IN2 PB IN2
REC OUT2
14
PB OUT2
RIPPLE
FILTER
R.CONST
RIPPLE
FILTER
REC OUT1