Pin No.
Pin Name
I/O
Description
61
AVSS
-
GND.
62
LED
O
STANDBY LED control terminal.
63
ICRESET
O
IC reset.
64
AVREF1
-
D/A reference power supply.
65
RXD-232C
I
No connection.
66
TXD-232C
O
No connection.
67
SQCK/SCK-SW
O
SQCK,SCK(DOT/DSP clock) selector. L:DSP.
68
RXD-R
I
No connection.
69
TXD-R
O
No connection.
70
DOOR-SW
I
Door open/close detector switch.
71
STB1
O
Strobe signal output to dot driver.
72
S1
O
Data output to dot driver.
73
SQS1
I
Sub code read data input.
74
S0
I
Data input from dot driver.
75
SCK/SQCK
O
Dot driver/sub code read clock.
76-83
A0~A7
O
Address output to SRAM.
84-91
D0-7
I/O
SRAM data bus.
92-98
A8~A14
O
Address output to SRAM.
99
A15(1M)
O
No used.
100
VSS
-
GND.
Pin No.
Pin Name
I/O
Description
1
VDD
-
Power 5V)
2
VSS
-
GND.
3,4
X1,2
-
Main system clock.(5MHz).
5
VPP
-
GND.
6
RESET
I
System reset input.
7
SCK
I Serial
clock.
8
SI
I Data
input.
9
SO
O
Data output.
10
POW-P
I/O
Timer sw on input. .
11
LED-A
O
No used.
12
LED-B
O
No used.
13
STANDBY O
No
used.
14
NC
-
No used.
15
STB
I
Strobe signal input.
16
REM
I No
used.
17
NC
-
No used.
18
AVSS
-
GND.
19,20
A/D3,A/D2
-
GND.
21,22
A/D1,A/D0
I
Key return signal input(1,0).
23
VSS
-
GND.
24,25
AVDD/VDD
-
Power 5V)
26
NC
-
No connection.
27-43
P1-P17
O
FL control output. 1G(
38
),2G-16G(P1to P17).
44-58
P21-35
O
FL control output. 2G-16G(P21to P35).
59
VDD
-
Power 5V)
60
VLOAD
-
Negative power supply(-37.5V)
61-63
P18-P20
O
FL control output. 2G-16G(P18 to P20).
64
NC
-
No connection.
65-72
1G-8G
O
FL control output.1G-8G.
73-80
9G-16G
O
FL control output.9G-16G.
4. FL Microprocessor : UPD 780232GC-012 (X32-IC13)
Pin description
5
CIRCUIT DESCRIPTION
CD-425M/4260M/4700M/DPF-J6030
