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IC1 TA2149N
24
23
FMRF
1
2
IC2 LC72137M-TLM
XIN
19
XOUT
20
FMIN
12
AMIN
11
CE
1
DI
2
CCB
I/F
CL
3
DO
4
POWER
VDD
14
RESET
VSS
15
20
22
21
20
AM
OSC
FM
OSC
BUFF
1/1 or
1/16
BUFF
AM
MIX
FM
MIX
3
4
5
REFERENCE
DIVIDER
SWALLOW COUNTER
1/2
X
1/16, 1/17 4bits
12bits PROGRAMMABLE
DIVIDER
DATA SHIFT REGISTER
LATCH
ON
5
6
7
19
18
17
IF
REQ
ST
SW
AF
BUFF
IF
BUFF
LEVEL
1/8
DET
AM
DET
AGC
AMIF
AMIF
6
7
8
13
8
9
— 47 —
16
15
14
13
AF
VCO
DECODE
DIVIDE
FM
ST/MO
DET
FM/AM
MUTE
9
10
11
12
PHASE DETECTOR
CHARGE PUMP
UNLOCK
DETECTOR
UNIVERSAL
COUNTER
16 PD
17 AIN
18 AOUT
10 IFIN
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