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IC1 TA2149N
z
IC Block Diagrams (Tuner Section)
GND1
3
2
1
IF REQ
AM
MIX
FM RF IN
AM LOW CUT
5
4
MIX OUT
VCC2
AF IF IN
8
7
6
FM IF IN
GND2
10
9
AGC
QUAD
12
11
R OUT
L OUT
FM RF OUT
22
23
24
20
21
17
18
19
15
16
13
14
AM RF IN
VCC1
FM OSC
ST IND
OSC OUT
AM OSC
IF OUT
LPF2/MO-ST
MPX IN
DET OUT
LPF1/BAND
FM
MIX
FM
OSC
LEVEL
DET
AM
DET
MUTE
FM
DET
ST/MO
FM/AM
AM
OSC
1/1OR
1/16
AGC
SW
ST
1/8
BUFF
BUFF
DIVIDE
DECODE
VCO
IF BUFF
AF BUFF
AF
FM RF
AM IF
FM IF
IC2 LC72137M-TLM
OCB
I/F
1
CE
2
DI
3
CL
4
DO
16
PD
VSS
15
VDD
14
13
MO/ST
20
X OUT
18
LP-OU
T
17
LP-IN
19
X IN
5
NUTE
6
MW/L
W
7
BAND
8
ST
-IND
9
BAND
DATA SHIFT REGISTER
LATCH
UNIVERSAL
CONTROLER
SWALLOW COUNTER
1/16. 1/17 4 BITS
12 BIT PROGRAMBLE
DIVIDER
UNLOCK
DETECTOR
PHASE DETECTOR
CHARGE PUMP
FILTER
REFERENCE
DIVIDER
POWER
ON
RESET
1/2
10
IF-IN
12
FM-IN
AM-IN
11