99
WM-FX481
SECTION 4
DIAGRAMS
Pin No. Pin name I/O Descliption
1 XOUT O Crystal oscillator output (75kHz).
2 TEST2 – Not used (Ground).
3 PA3 I Key input.
4 PA2 I Key input.
5 PA1 I Key input.
6 PA0 I Key input.
7 PB3 O Key output.
8 PB2 O Key output.
9 PB1 O Key output.
10 AVLS O AVLS signal output.
11 MOTOR CTL O Motor control output.
12
METAL/NOR
O METAL/NORMAL type tape and DX/LOCAL select signal output.
DX/LOCAL
13 E/CA I Destination select.
14 BAND O Tuner band select signal output.
15 SD I Tuning signal detect input.
16 COMP I Compalator input.
17 N/R SW I FWD/REV mode signal input.
18 BACK UP I Back up voltage input.
19 AMP ON O Power ON/OFF signal output.
20 BEEP O Beep signal output.
21 BATT CHECK I Back up cancel input.
22 BATT REF I A/D reference voltage input.
23 HOLD I HOLD switch input. “H” :ON, “L” :OFF
24 VSS – Ground terminal.
25 RADIO ON O Radio ON signal output.
26 MEGA BASS O MEGA BASS ON signal output.
27 MUTE O Mute ON signal output.
28 TAPE I Tape ON input.
29 PRE CTL O Preamplifier control output.
30-44 S1-15 O LCD segment output.
45-48 COM1-4 O LCD common output.
49-52 DBR1-4 – LCD power supply.
53 RESET I Reset input (Fixed “H”).
54 TU VCC – Power supply.
55 VDD – Power supply.
56 FM IN I FM osc frequency input.
57 AM IN I AM osc frequency input.
58 VSS – Ground terminal.
59 E.O O Error (PWM) signal output.
60 LPF IN I LPF input.
61 LPF OUT O LPF output.
62 LPF GND – Ground terminal.
63 TEST 1 – Not used (Ground).
64 X IN I Crystal oscillator input (75kHz).
4-1. EXPLANATION OF IC TERMINALS
IC702 LC72348W-CFX1721(5E, 6E) SYSTEM CONTROL
IC702 LC72348W-CFX1726(9E, CH) SYSTEM CONTROL
• Abbreviation
CH : Chinese
9E : No Indication of country of origin
5E, 6E : Indication of country of origin
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
To Next Page
Loading...
Need help?
General
