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IC BLOCK DIAGRAM & DESCRIPTION
IC211 LA1186N(Diode for RM AMP,MX,OSC & AFC)
Vref
RF
MIX
1
2
3
4
RF IN
IC241 LC72121M-D(PLL)
Vssx
2
XIN
1
XOUT
24
FMIN
17
AMIN
16
CE
3
DI
4
CL
5
DO
6
V
18
DD
Vssd
15
IC301 NJM4560M(OP. AMP.)
A: OUT
1
A: -IN
2
A
A: +IN
3
V
4
EE
BUFFER
REG
OSC
5
6
7
8
GND
IF OUT
REFERENCE
DIVIDER
SWALLOW COUNTER
1/2
1/16, 1/17 4bits
12bits PROGRAMMABLE
DIVIDER
CCB
DATA SHIFT REGISTER LATCH
I / F
POWER
ON
RESET
8
9
7
BO1 BO2 BO3 BO4
8
Vcc
B: OUT
7
B
6
B: -IN
5
B: +IN
IC231 LA1844ML(AM/FM-ZF/MPX)
24
23
22
21
ALC
AM
AM
AM
MIX
RF.AMP
OSC
BUFF
LEVEL
AM/FM
DET
IF
S-CURVE
BUFF
FM
FM
IF
DET
REG
9
Vcc
2
3
4
1
PHASE DETECTOR
CHARGE PUMP
UNLOCK
DETECTOR
UNIVERSAL
COUNTER
10
11
14
IO1 IO2
A
+
-
2
3
1
4
- 31 -
20
19
18
17
16
15
DECODER
AGC
ANTI-BIRDIE
P-DET
AM
STEREO
AM
DET
SW
IF
COMP
FF
VCO
FF
304kHz
38k
19k
TUNING
DRIVE
GND
VCC
5
6
7
8
9
10
19
PD
20
AIN
21
AOUT
22
Vssa
13
IFIN
B
+
-
8
9
5
6
7
14
13
PILOT
CANCEL
FF
PILOT
19k
DET
2
11
12
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