— 28 —
• IC501 SYSTEM CONTROL ( CXP82616-034Q)(DISPLAY board)
Pin No. Pin Name I/O Function
1 GND – Ground
2 RMIN I Remote control signal input
3 GND – Ground
4 to 7 — – Not used
8 CLK O Serial clock output
9 SENSE I Sense signal input from IC103 (CXD2529Q)
10 DATA O Serial data output
11 SQCK O Sub Q clock output
12 SQSO I Sub Q data input
13 SENSE2 I Sense signal input from IC101 (CXA1992AR)
14 — – Not used (Open)
15 XLAT O Serial latch output
16 to 19 MUTE O Muting control signal output
20 LD OUT O Loading motor control
21 LD IN O Loading motor control
22, 23 — – Not used (Open)
24 to 26 KEY 0 to KEY 2 I Key input 0 to 2
27 — – Not used (Open)
28 ADJ/AFADJ I Test mode terminal
29 IN/OUT SW I CD tray IN/OUT switch
30 RST I System reset terminal
31 EXTAL O System oscillator (4.0 MHz)
32 XTAL I System oscillator (4.0 MHz)
33 VSS – Ground
34 to 41 OPEN – Not used (Open)
42 to 62 S21 to S1 O FL segment signal output
63 to 67 1G to 5G O FL grid signal output
68 — – Not used (Open)
69, 70 6G, 7G O FL grid signal output
71 VFDP (–30V) – Pull down voltage (–30V)
72 VDD (+5V) – Power supply (+5V)
73, 74 GND – Ground
75 VDD – Power supply (+5V)
76, 77 — – Not used (Open)
78 SCOR I Sub code data request signal input
79, 80 GND – Ground
• Abbreviation
FL : Fluorescent indicator tube
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