— 61 —
+5V
Fluorescent indicator tube segment signal output.
–25V for Fluorescent indicator tube.
Fluorescent indicator tube segment signal output.
Fluorescent indicator tube grid signal output.
Volume encoder signal input.
Jog dial encoder signal input.
Ready signal from master contorl.
SIRCS signal input.
Ground
Jog dial encoder signal input.
Not used. (Open)
Ground
Function
I/O
6-14. IC PIN FUNCTIONS
• IC501 GRAPHIC CONTROL (µPD78042FGF-027-3B9)
GR7 to 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 to 4
KEY IN1 to 4
AV
DD
AV
REF
JOG IN B
XT2
V
SS
X1
X2
LED8 to 5
LED4,3
LED2,1
VOL IN A
JOG IN A
RDY MG
SIRCS IN
IC (VPP)
LED12, 13
LED11
V
DD
SEG22 to 5
V. LOAD
SEG4 to 1
GR12 to 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
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.
LED drive signal output.
Pin Name
Pin No.
