D24
24
PIN
NO.
I/O
FUNCTION
NAME
PIN
NO.
I/O
FUNCTION
NAME
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
/RESET
/CS
/AS
/LDS
A1
A2
A3
A4
A5
Vss
CLK
R/W
/DTACK
Vss
D0
D1
D2
D3
Vss
D4
D5
D6
D7
Vss
FC0
FC1
FC2
/IACK
Vcc
MODE
/IPL0
/IPL1
/IPL2
/IRQ1
/IRQ2
I
I
I
I
I
I
I
I
I
I
I
O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
I
I
O
I
O
O
O
I
I
Reset
Chip select
Address strobe
Data strobe
Address bus
Ground
System clock
Read/write control
Data acknowledge
Ground
Data bus
Ground
Data bus
Ground
Function code
Interrupt acknowledge
Power supply
CPU mode select (When Hi:68000
mode, when Lo:6800 mode)
Interrupt control
Interrupt request
Interrupt request
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
/IRQ3
/IRQ4
/IRQ5
/IRQ6
/IRQ7
TXD1
RXD1
/RTS1
/CST1
/DCD1
Vss
TXD2
RXD2
/RTS2
/CTS2
/DCD2
TXD3
RXD3
/RTS3
/CTS3
TXD4
RXD4
/RTS4
/CTS4
Vcc
TXD5
RXD5
TXD6
RXD6
Vss
FS
XCLK2
XCLK1
I
I
I
I
I
O
I
O
I
I
O
I
O
I
I
O
I
O
I
O
I
O
I
O
I
O
I
I
I
I
Interrupt request
Data transmission 1
Data reception 1
Request to send 1
Clear to send 1
Data carrier detect 1
Ground
Data transmission 2
Data reception 2
Request to send 2
Clear to send 2
Data carrier detect 2
Data transmission 3
Data reception 3
Request to send 3
Clear to send 3
Data transmission 4
Data reception 4
Request to send 4
Clear to send 4
Power supply
Data transmission 5
Data reception 5
Data transmission 6
Data reception 6
Ground
Counter clock
Clock
Clock
YM6604 (XH497A00) ACIA (Asynchronous Communication Interface Adapter)
MAIN: IC117
