67
XC-IS22CD
•
Pin Function
PDC083A (CD ASSY : IC1501)
• CD micro computer
No.
Name
I/O
Description
1
NC
-
-
2
CDMUTE
O
CD MUTE control (H:MUTE)
3
XCDCE
O
CD BUS communication (TC9495F CHIP
ENABLE)
4
BUCK
O
CD BUS communication (TC9495F CLK
OUT)
5
/HS
O
CD IC (TC9495F) Nomal/High speed select
ACTIVE ("H" :NORMAL)
6
XRST
I
Reset output of TC9495F and CL680T
("L" : ACTIVE)
7
VCS
I
Communication with system microcomputer
(CHIP SELECT)
8
NC
O
-
9
NC
I
-
10
NC
I
-
11
XVCRST
O
Reset input
12
(+5V)
O
Because it is unused, connects with +5V.
13
NC
O
-
14
GND
O
GND
15
CF1
O
Connects with a ceramic oscillator (10MHz)
16
CF2
O
Connects with a ceramic oscillator (10MHz)
17
VDD
O
Connects with a +5V
18
BUS3
O
19
BUS2
O
CD BUS communication (TC9495F DATA
20
BUS1
O
INPUT OUTPUT)
21
BUS0
O
22
WCLK
O
The terminal (It is unused in the mask ROM)
(I) for the flash microcomputer writing
The terminal (It is unused in the mask ROM)
(I/O) for the flash microcomputer writing
The terminal (It is unused in the mask ROM)
(I) for the flash microcomputer writing
Checkers test mode input ("H" : MODE
START & CD PLAY
Checkers test mode end ("H" : CD STOP &
MODE END
29
NC
O
-
30
connects with the terminal GND . (It is not
I
(GND)
-
possible to use for VFD)
38
No.
Name
I/O
Description
39
I
GND
-
GND
45
46
VDD
-
GND
47
I
(GND)
-
unused (GND connection)
50
51
VP
-
GND
52
-
I
(GND)
-
unused (GND connection)
71
-
72
VDD
-
GND
73
I
(GND)
-
unused (GND connection)
84
85
ZDET
Zero detection ("H" : ZERO)
86
CD INSIDE
I
CD INSIDE SW ("L": INSIDE)
87
I
(GND)
-
unused (GND connection)
89
90
VDD
I
+5V
91
I
(GND)
-
unused (GND connection)
94
95
VCV
O
Communication with system microcomputer
(DATA INPUT/OUTPUT)
96
VCS
I
Communication with system microcomputer
(DATA INPUT)
97
VCLK
I
Communication with system microcomputer
(CLK)
98
NC
O
-
99
NC
I/O -
100 NC
O
-
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