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FM-IFI1
FM-MIXER
FM-IFI2
FM-IFO1
FM-RFO
3
FMOSC
5
IFGND FMDEM FSI
39
37
35 33
17
18
21
43
42
16
24
FM-RFI
RFGND
PILFIL
MO/ST
FM
FM
FM
MIXER
FM
IF1
FM
IF2
FM
DETECTOR
PILOT
DETECTOR
FRONT-END
OSCILLATOR
28
27
29
19 kHz
PLL
38 kHz
DECODER
stereo
DATA
BUS-CLOCK
WRITE-ENABLE
12
9
LFI
VCO
STATUS
REGISTER
AM/FM
INDICATOR
V
38
34
STAB(A)
V
STAB(B)
7
23
1
V
SHIFT REGISTER
STABILIZER
CC1
V
DDD
RIPPLE
up
IN-LOCK
14
down
level
DETECTOR
LAST-STATION
MEMORY
AFLO
AFRO
MATRIX
PRESCALER
15
13
stereo mono
SEQUENTIAL
CIRCUIT
CHARGE
PUMP
PROGRAMMABLE
COUNTER
MULTIPLEXER
SDS
MUTE
FM
MUTE
level
hard mute
AFC
25
26
XTAL
AM
CRYSTAL
OSCILLATOR
WINDOW
DETECTOR
DGND
TEA5757;
TEA5759
31
30
P1
P0
19
20
32
AFC
(n)
AFC
(p)
AFC
2
AM
FRONT-END
V/I
AM
AM
MIXER
AM
IF
AM
DETECTOR
AGC
AM-RFI
OSCILLATOR
CONVERTER
6
10
40
41
8
22
4
36
44
11
MHA111
AGC
TUNE
V
AFO
CC2
MPXI
RFGND
AMOSC
AM-MIXER
AM-IFI/O2
AM-IFI1
Fig.1 Block diagram.
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NXP [ NXP ]
