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SECTION 12
OPTIONAL UNIT UT-103
12 - 1
• BLOCK DIAGRAM
• BOARD LAOUT (TOP VEIW)
• BOARD LAYOUT (BOTTOM VIEW)
• SCHEMATIC DIAGRAM
IC1
FX809LG
FFSK
VCC
C-BUS
SIG OUT
SIG OUT
OPT1
DISC IN
AMP O
VBIAS
J1
to IC-F2610
MAIN unit J6
X1
CR-466
IC2
TC4W53F
AMP I
FM/PM SW
10
15
MP2
21
16
4
9
3
1
24
22
SCK
16
30
15
1
to IC-F2610
MAIN unit J6
J1
SI
SO
CIRQ
CCS
NC
NC
DISC IN
NC
NC
NC
NC
NC
+5V
GND
NC
NC
NC
GND
NC
NC
OPT1
SIG OUT
NC
NC
NC
NC
NC
NC
NC
1
4
8
5
MP1
VOLTAGE LINE
Explanatory notes
Decoding signal
Encoding signal
J1
1
2
3
4
5
6
7
8
9
SIG OUT
SIG OUT
DISC IN
DISC IN
+5V
GND
OPT1
SCK
SI
SO
GND
CIRQ
CCS
10
11
12
13
14
15
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
to IC-F2610
MAIN unit J6
16
17
18
19
20
21
22
23
24
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
NC
REPLY
NC
CS
CMD
SCK
ADR SEL
WAKE
VDD
XTAL
CLK
IRQ
NC
NC
RX
VBIAS
AMP I
AMP O
RXI
NC
VSS
TX O
NC
NC
C5
1
R15
100k
C4
0.001
L1
1.8
µ
R5 100k
R4 100k
R2 100k
C1
0.001
R18 1k
R19 1k
R20 1k
R17 1k
R16 1k
R8
1M
R7
1.5k
W1
C14
100p
X1
CR-466
C7
33p
C8
33p
C6
1
R10
220k
C12
22p
7
6
2,3,4
1
5 8
FM "OPEN"
PM "SHORT"
R21
100k
IC1
FX809LG
IC2
TC4W53F
C3
0.001
W2
C15
0.1
C2
0.1
R6
100k
R14
10k
R9
100k