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IC4201 Hi-Fi AUDIO MTS/SAP PROCESS IC-DETAIL BLOCK DIAGRAM, AN3662FBP
48
47
46
45
44
MUTE
DEMODULATOR
CTL
49
PILOT
DETECTOR
50
ST PLL
VCA
STEREO
+5V
FILTER
51
L-R
DEMODULATOR
SAP
52
DEMODULATOR
75us
LPF
DE-EMPHASIS
R CH
53
54
MUTE
R
(L-R) / SAP
L
55
GND
SWITCH
R
+
56
MTS MODE
MUTE
L
L CH
57
L
R
+12V
58
59
RF AGC
RF AGC
60
SAP
DETECTOR
L
MIX
61
R
62
MATRIX
63
dBX
NOISE
REDUCTION
64
1
2
3
4
5
43
42
41
40
39
38
37
GND
+5V
GND
I2C BUS
NOISE REDUCTION
REC
/COMPRESSOR
/EXPANDER
PB
PB
REC
LIMITER
PC
BS
Hi-Fi
BPF
MIX
FM
NORMAL
LIMITER
BPF
NORMAL
MIX
PC
Hi-Fi
BS
LIMITER
TUNER
REC
LINE 1
L-CH
PB
LINE 2
LINE 3
REC
TUNER
R-CH
PB
LINE 1
LINE 2
LINE 3
V-REF
GND
6
7
8
9
10
11
12
REC AUDIO SIGNAL
PB AUDIO SIGNAL
36
35
34
33
A-MUTE(H)
32
31
SWITCHING NOISE
COMPENSATOR
30
PB LPF
29
VCO
28
HPF
REC LPF
27
NOISE
DETECTOR
26
SW
MIX
+5V
25
AGC
HOLD
AMP
24
REC LPF
TIMING
L
VCO
GND
23
R
PB LPF
22
21
PB-ON
SWITCHING NOISE
20
COMPENSATOR
19
NOISE REDUCTION
18
/COMPRESSOR
/EXPANDER
17
13
14
15
16
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