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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
4NC—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
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