-17-
IC BLOCK DIAGRAM-1/1
IC, BA4558N
IC, TA2104AN
24
23
22
21
20
19
18
17
16
15
14
13
DECODE
DIVIDE
VCO
11
10
9
8
7
6
5
4
3
2
1
12
FM RF OUT
RF GND
FM RF IN
AM IF IN
FM IF IN
GND
AGC
QUAD
R-OUT
L-OUT
AM LOW
CUT
MIX OUT
VCC
RF VCC
AM RF IN
FM OSC
AM OSC
OSC OUT
ST LED
IF REQ
DET OUT
LPF1
LPF2
FM
OSC
AM
OSC
FM
MIX
BUFF
BUFF
AMIF
FMIF
AGC
MUTE
ST/MO
FM/AM
FM
DET
AM
DET
1/8
LEVEL
DET
IF
BUFF
AF
BUFF
AF
IF
REQ
SW
ST
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QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299