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6-18. IC PIN FUNCTIONS
• IC501 GRAPHIC CONTROL (ASD042)
GR7-1
V
DD
LED9, 10
KEY SELECT
VOL IN B
REQ GM
CLK MG
DATA GM
DATA MG
RESET
PANEL SW
LED SELECT
AV
SS
SPEANA IN1-4
KEY IN1-4
AV
DD
AV
REF
JOG IN B
XT2
V
SS
X1
X2
LED8-5
LED4,3
LED2,1
VOL IN A
JOG IN A
RDY MG
SIRCS IN
IC (VPP)
LED12, 13
LED11
V
DD
SEG22-5
V. LOAD
SEG4-1
GR12-8
1 to 7
8
9, 10
11
12
13
14
15
16
17
18
19
20
21 to 24
25 to 28
29
30
31
32
33
34
35
36 to 39
40, 41
42, 43
44
45
46
47
48
49, 50
51
52
53 to 70
71
72 to 75
76 to 80
Fluorescent indicator tube grid signal output.
+5V
LED drive signal output
Not used. (Open)
Volume encoder signal input.
Request signal from/to master control.
Serial clock input.
Serial data output to master control.
Serial data input from master control.
Reset signal input.
CD door open detection input. (Not used) (Open)
LED select signal output.
Ground
Spectram analizer signal input. (Connected to ground)
Key matrix input.
+5V
Jog dial encoder signal input.
Not used. (open)
Ground
O
–
O
O
I
I/O
I
O
I
I
I
O
–
I
I
–
–
I
I
–
I
O
O
O
O
I
I
I
I
–
O
O
–
O
–
O
O
X’tal (5 MHz).
LED drive signal output. (Not used) (open)
LED drive signal output.
Volume encoder signal input.
Jog dial encoder signal input.
Ready signal from master contorl.
SIRCS signal input.
Ground
LED drive signal output.
+5V
Fluorescent indicator tube segment signal output.
–25V for Fluorescent indicator tube.
Fluorescent indicator tube segment signal output.
Fluorescent indicator tube grid signal output.
Pin Name
Pin No.
Function
I/O
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