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Ultra320 SCSI Connector: SCSI 2 (Channel B)
SCSI (Small Computer System Interface) is a parallel interface standard
for attaching peripheral devices to computers. Ultra320 SCSI is the seventh
generation of SCSI I/O technology, and has a maximum data rate speed of
320 MB/sec. SCSI's commitment to backward compatibility and legacy sup-
port are the primary reasons for its durability as an I/O interface, making
SCSI the industry standard for disk drive connection in virtually all high-
performance servers.
SCSI 2
1
34
68
35
Hardware Setup
68-Pin Ultra320 SCSI Connector
Pin
Description
Pin
Description
1
+DB(12)
35
-DB(12)
2
+DB(13)
36
-DB(13)
3
+DB(14)
37
-DB(14)
4
+DB(15)
38
-DB(15)
5
+DB(P1)
39
-DB(P1)
6
+DB(0)
40
-DB(0)
7
+DB(1)
41
-DB(1)
8
+DB(2)
42
-DB(2)
9
+DB(3)
43
-DB(3)
10
+DB(4)
44
-DB(4)
11
+DB(5)
45
-DB(5)
12
+DB(6)
46
-DB(6)
13
+DB(7)
47
-DB(7)
14
+DB(P)
48
-DB(P)
15
GROUND
49
GROUND
16
DIFFSENS
50
GROUND
17
TERMPWR
51
TERMPWR
18
TERMPWR
52
TERMPWR
19
RESERVED
53
RESERVED
20
GROUND
54
GROUND
21
+ATN
55
-ATN
22
GROUND
56
GROUND
23
+BSY
57
-BSY
24
+ACK
58
-ACK
25
+RST
59
-RST
26
+MSG
60
-MST
27
+SEL
61
-SEL
28
+C/D
62
-C/D
29
+REQ
63
-REQ
30
+I/O
64
-I/O
31
+DB(8)
65
-DB(8)
32
+DB(9)
66
-DB(9)
33
+DB(10)
67
-DB(10)
34
+DB(11)
68
-DB(11)
2-17
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