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IC BLOCK DIAGRAM & DESCRIPTION
IC231 LA1844ML ( Tuner System)
FM
IF
FM
DET
LEVEL
DET
S-CURVE
AM/FM
IF
BUFF
REG
GND
COMP
TUNING
DRIVE
AM
IF
AM
DET
VCC
AGC
PILOT
CANCEL
PILOT
DET
DECODER
ANTI-BIRDIE
STEREO
SW
FF
38k
FF
19k
VCO
304kHz
AM
RF.AMP
AM
MIX
AM
OSC
ALC
BUFF
P-DET
FF
19k
2
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
IC241 LC72121M-D (Pll Synthesizer)
IC251 LC72722 (RDS Signal Processor)
Vdda
REFERENCE
VOLTAGE
3
4
2
20
21
22
23
7
8
9~11,16,17
1
5
6
14
15
19
18
24
13
12
ANTIALIASING
FILTER
57kHz
BPF
(SCF)
SMOOTHING
FILTER
VREF
PLL
(57kHz)
CLOCK
RECOVERY
(1187.5Hz)
DATA
DECODER
SYNC/EC CONTROLLER
ERROR CORRECTION
(SOFT DECISION)
R A M
(24 BLOCK DATA)
C C B
TEST
MEMORY CONTROL
CLK(4.332MHz)
OSC / DIVIDER
SYNC
DETECT-1
SYNC
DETECT-2
Vssa
MPXIN
DO
CL
DI
CE
T1
T2
T3~T7
XIN
XOUT
Vddd
Vssd
RDS-ID
VREF
FLOUT CIN
SYNC
SYR
IC450 LC75342M
(Electronically Controllable Electronic Volume)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
DI
CE
VSS
TEST
LOUT
LBASS2
LBASS1
L
TRE
LIN
LSEL0
L4
L3
L2
L1
NC
CL
VDD
VREF
NC
ROUT
RBASS2
RBASS1
R
TRE
RIN
RSEL0
R4
R3
R2
R1
NC
A
B
OUT A
OUT B
-IN A
+IN A
V
EE
V
CC
V
CC
+IN B
-IN B
1
2
3
4
5
6
7
8
9
IC451 KIA4558S
(Dual Low Noise Operational Amplifier)
2
1
24
17
16
3
4
5
6
18
15
7
8
9
10
11
14
19
20
21
22
13
Vssx
XIN
XOUT
FMIN
AMIN
CE
DI
CL
DO
V
DD
Vssd
PD
AIN
AOUT
Vssa
IFIN
IO1 IO2
BO1 BO2 BO3 BO4
PHASE DETECTOR
CHARGE PUMP
UNLOCK
DETECTOR
UNIVERSAL
COUNTER
REFERENCE
DIVIDER
SWALLOW COUNTER
1/16, 1/17 4bits
12bits PROGRAMMABLE
DIVIDER
DATA SHIFT REGISTER LATCH
1/2
CCB
I / F
POWER
ON
RESET
Summary of Contents for CP-088
Page 23: ... 23 22 SCHEMATIC DIAGRAM FRONT This is a basic schematic diagram ...
Page 46: ... 57 MEMO ...
Page 56: ... 71 70 SCHEMATIC DIAGRAM FRONT This is a basic schematic diagram ...
Page 57: ... 74 SCHEMATIC DIAGRAM POWER SUPPLY This is a basic schematic diagram ...
Page 59: ...SANYO Technosound Co Ltd Osaka Japan June 01 1820 BB Printed in Japan ...
Page 60: ... 25 24 WIRING DIAGRAM FRONT ...
Page 61: ... 29 28 WIRING DIAGRAM AMPLIFIER ...
Page 62: ... 33 32 WIRING DIAGRAM TUNER ...