— 25 —
6-5. IC BLOCK DIAGRAMS
IC302 NJM2185AV-TE2IC2 TA2022AFN-EL
IC501 LA3235WIC1 TA7371AF-EL
GND
AFC DIODE(A)
RF IN
OFC DIODE(C)
MIX OUT
VCC
OSC
RF OUT
1 2 3 4
5678
RF
REG
MIX
OSC
891014 13 12
21 3
A-CH BLOCK
11
7654
G2
G1
V/I
WEIGHT
BIAS
CIRCUIT
+
–
+
–
GM
SUM
V+
SW
VEXT
OUTA
DCA
DETA
INA
GND
IREF
VREF
OUTB
DCB
DETB
INB
B-CH BLOCK: SAME AS A-CH.
37
38
39
40
41
42
43
44
45
46
47
48
24
23
22
21
20
19
18
17
16
15
14
13
123456789101112
3536 34 33 32 31 30 29 28 27 26 25
N.C.
REF
V REF
GND
REV REC L
REV REC R
FWD REC R
FWD REC L
VCC2
MONITOR L
MONITOR R
N.C.
GND
MIC IN L
NF L
RADIO IN L
MIC IN R
NF R
RADIO IN R
MIC OUT R
MIC OUT L
REC IN L
REC IN R
N.C.
N.C.
REC MUTE
MIC/RADIO
FWD/REV
REC/PLAY
CONT F
CONT A
(FWD)
PLAY(REV)
(REV)
PLAY(FWD)
PLAY(FWD)
(REV)
(REV)
PLAY(FWD)
PLAY
REC
CONT B
CONT C
CONT D
CONT E
N.C.
N.C.
MIC REG REF
MIC REG
REC BIAS REG REF
REC BIAS REG
OSC
BASE
VCC1
VCCRF
ALC
GND
N.C.
SYSTEM CONTROL
V REF
REV
REC
AMP
FWD
REC
AMP
MONITOR
AMP
DET
MIC
REGULATOR
REC BIAS REGULATOR
ALC
AMP
L
ALC
AMP
R
VCC2
( ):REC
VREF
OSC
VCC
GND
IF OUT
IF REQ
SP OUT
1
2
FM IF IN
MIX
3
4
5
AM IF IN
QUAD
AGC
6
7
8
9
10
11
12
ROUT
LOUT
ST IND
13
14
15
MPX IN
PILOT IN
DET OUT
IN SW
AM RF IN
20
21
22
23
24
LPF 2A
LPF 2B
18
19
LPF1
VCO
16
17
STOP
PULSE
OSC AGCMIX
FM
IF
FM
IF
AM
IF
AM
IF
FM DET
SWITCH
AM DET
DEVIDE
DECODE
PRE
VCO090
FM
AM
PILOT
ST
IND
øø
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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