– 55 –
IC2 LC72137-D
IC1 TA2008AN
r
IC Block Diagrams (Tuner Section)
21
22
23
24
2
3
5
4
6
7
8
9
10
1
11
12
13
14
15
16
17
18
19
20
AM
RF
FM
RF
BUFF
BUFF
IF
BUFF
AF
BUFF
FM MPX
FM
MIX
FM
IF
AM
IF
AM
MIX
AM
DET
1/8DIV
MUTE
AGC
FM RF IN
GND1
MIX OUT
AGC
VCC2
FM IF IN
AM IF IN
GND2
QUAD
ST IND
L OUT
R OUT
AM RF IN
FM RF OUT
AM OSC
FM OSC
VCC1
OSC OUT
IF OUT
DET OUT
MPX IN
LPF1/BAND
LPF2/MO-ST
VCO
FM
DET
ST
DET
LEVEL
DET
AM
OSC
FM
OSC
AM/FM
ST/MONO
SW
OCB
I/F
2
CE
3
DI
4
CK
5
DO
17
PD
VSS
16
VDD
15
14
MO/ST
21
X-OUT
1
NC
22
NC
19
LP-OUT
18
LP-IN
20
X-IN
6
LW
-L
7
MW
-L
8
BAND
9
S
T-IND
10
NC
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
11
IF-IN
13
FM-IN
AM-IN
12