20
CDX-MP80
• IC702 HD6432398-A02FWV (DISPLAY CONTROL) (MAIN BOARD)
Pin No.
Pin Name
I/O
Pin Description
1
SA CLK
O
Spectrum analyzer clock output
2
NCO
O
Not used. (Open)
3
VSS
—
Ground pin
4
NC
—
Not used. (Open)
5
VCC
—
Power supply pin (+5 V)
6 – 9
NCO
O
Not used. (Open)
10
VSS
—
Ground pin
11 – 18
NCO
O
Not used. (Open)
19
VSS
—
Ground pin
20 – 27
NCO
O
Not used. (Open)
28
VSS
—
Ground pin
29 – 32
NCO
O
Not used. (Open)
33
SPE LAT
I
Spectrum analyzer LAT signal input Connecting to ground in this set.
34
BU IN
I
Back up voltage detect signal input
35, 36
VSS
—
Ground pin
37
NCO
O
Not used. (Open)
38
BUS ON
I
BUS ON signal input
39
VCC
—
Power supply pin (+5 V)
40 – 43
NCO
O
Not used. (Open)
44
VSS
—
Ground pin
45 – 48
NCO
O
Not used. (Open)
49
SPE
I
Spectrum analyzer enable signal pin
50
LINK OFF
O
LINK OFF signal output
51
NCO
O
Not used. (Open)
52
ILL ON
O
Illumination control signal output
53
VSS
—
Ground pin
54 – 56
NCO
O
Not used. (Open)
57
BOOT
I
Display CPU write-in control signal input
58
VCC
—
Power supply pin (+5 V)
59
NCO
O
Not used. (Open)
60
LCD SO/TX
O
LCD data output/UART signal output
61
NCO
O
Not used. (Open)
62
RX
I
UART signal input
63
L RST
O
Reset signal output
64
LCD CKO
O
LCD clock signal output
65
VSS
—
Ground pin
66
LCD CEO
O
LCD driver chip enable signal output
67, 68
VSS
—
Ground pin
69 – 78
NCO
O
Not used. (Open)
79
FL W
O
Not used. (Open)
80
VCL
I
Connecting to ground through a capacitor.
81
SYS RES
I
Reset signal input
82
NMI (H)
I
Non maskable interrupt signal input
83
STBY (H)
I
Standby mode signal input
84
VCC
—
Power supply pin (+5 V)
85
XTAL
—
Crystal oscillator (18.432 MHz)
86
EXTAL
—
Crystal oscillator (18.432 MHz)
87
VSS
—
Ground pin
88
NCO
O
Not used. (Open)
89
VCC
—
Power supply pin (+5 V)
90 – 96
NCO
O
Not used. (Open)
97
UNI SO
O
Bus data output