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NEX 6620A User's Guide
CN12, CN14 : SCSI 68 Pin Connector
Pin No.
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
Minus High Byte Parity
41
43
45
47
49
51
53
55
57
59
61
63
65
67
Switches and Connectors
Description
Plus Data12
Plus Data14
Plus High Byte Parity
Plus Data1
Plus Data3
Plus Data5
Plus Data7
Ground
+5V
NC
Plus Attention
Plus Busy
Plus Reset
Plus Select
Plus Request
Plus Data8
Plus Data10
Minus Data12
Minus Data14
Minus Data1
Minus Data3
Minus Data5
Minus Data7
Ground
+5V
NC
Minus Attention
Minus Busy
Minus Reset
Minus Select
Minus Request
Minus Data8
Minus Data10
Pin No.
2
4
6
8
10
12
14
Plus Low Byte Parity
16
Differential Sense
18
20
22
24
Plus Acknowledge
26
28
Plus Command / Data
30
32
34
36
38
40
42
44
46
48
Minus Low Byte Parity
50
52
54
56
58
Minus Acknowledge
60
Minus Message
62
Minus Command / Data
64
66
68
Rev. B0
0301
Description
Plus Data13
Plus Data15
Plus Data0
Plus Data2
Plus Data4
Plus Data6
+5V
Ground
Ground
Plus Message
Plus In / Out
Plus Data9
Plus Data11
Minus Data13
Minus Data15
Minus Data0
Minus Data2
Minus Data4
Minus Data6
Ground
+5V
Ground
Ground
Minus In / Out
Minus Data9
Minus Data11
2-8
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