– 28 –
• IC501 SYSTEM CONTROL ( CXP82616-034Q)
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)
–
Ground
–
Power supply (+5V)
–
Not used (Open)
I
Sub code data request signal input
–
Ground
FL : Fluorescent indicator tube
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