9
DRA-395
LA1266 (IC402)
10
4
1
3
8
19
15
17
18
14
21
22
GND
Vcc
5
11
IF
BUFFER
IF
BUFFER
2
FM - IF
6
Q.D.
7
REG
23
OSC
OSC
BUFFER
24
NARROW
S-METER
S-METER
16
LED
DRIVER
RF MIX
12
20
AM-IF DET
AGC
POST
AMP
9
13
AM-IF FM-IF FM-IN
AM - I N
TC9184AP (IC602)
2
3
4
5
6
116 7 8
9
10
15
14
13
BASS+
BASS
-
COM
TREBLE-
TREBLE+
V
SS
V
DD
GND
CK
DATA
STB
BASS+
BASS
-
COM
TREBLE-
TREBLE+
Ladder resister
Analog switch
13 bit latch circuit
Level shift
20 bit Shift register circuit
Analog switch
Ladder resister
Ladder resister
Analog switch
13 bit latch circuit
Code
detect
circuit
Analog switch
Ladder resister
20
19
18
17 16 15 14
13
12
9
87
5
6
1
21
LA3401 (IC403)
22
VOL
REG
OSC
SYMMETRICAL
REOCTANCE
CIRCUIT
PHASE
COMPARATOR
VCO STOP
PILOT DET
FF
FF
FF
38kHz
FF
38kHz 90°
FF
19kHz 90°
MUTING
FM AM CHANGE
Ro
Rc
Rc
Rb
2
3
4
DECODER
MUTING CONTROL
FM AM CHANGE OVER
Vcc ON
MUTING
MUTING
OUTPUT
STEREO
SWITCH
TRIGGER
LAMP
DRIVER
Rb
10 11
LC72131M (IC401)
1
20
219
318
417
5
16
6
15
7
14
8
13
9
12
10 11
XI N
CE
DI
CL
DO
BO1
BO2
BO3
BO4
IO1
AOUT
AI N
PD
V
DD
FMIN
AMI N
IO2
IFIN
Vss
XOUT
BA7625 (IC501)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Monitor OUT
GND
IN5
GND
IN4
CTL E
IN3
CTL D
IN1
CTL A
V OUT1
Vcc
IN2
CTL B
V OUT2
CTL C
6dB
6dB
LOGIC
LOGIC
ABE
MONITOR OUT
C D E V OUT 1 C D E V OUT 2
LL
*
IN 1
LL
*
¾
LL
*
IN 1
HL
*
IN 2
HL
*
IN 2
HL
*
¾
LH
*
IN 3
LH
*
IN 3
LH
*
IN 3
HH L IN 4
HHL IN 4
HH L IN 4
HHH IN 5
HHH IN 5
HHH IN 5
Note 1: * mark means that feasible for either H or L.
Note 2: Each input terminal is provided with sink chip clamp (BA7625).
Each input terminal takes 20kohm at the end (BA7626).
11
12
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Vss
BASS
+
BASS
-
CON
TREBLE
-
TREBLE
+
GND
CK
VDD
BASS
+
BASS
-
COM
TREBLE
-
TREBLE
+
STB
DATA
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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