Appendix D. SCSI-2 Fast/Wide PCI-Bus Adapter Connectors
The SCSI-2 Fast/Wide PCI-Bus Adapter Connectors supports two single-ended SCSI
buses (internal and external).
There are two connectors provided for attaching to the internal SCSI bus. The
50-pin connector, shown below, is used for attaching a narrow (8-) SCSI cable. The
68-pin connector is used for attaching a wide (16-bit) SCSI cable, shown on page
D-3. below.
Note: Only one internal connector can have a cable attached at a time.
Internal 50-Position SCSI Bus Connector
1
2
49
50
Figure
D-1. Internal 50-Pin SCSI Bus Connector
Signal Name
Pin
Pin
Signal Name
Ground
Ground
Ground
Ground
1
3
5
7
2
4
6
8
-DB(0)
-DB(1)
-DB(2)
-DB(3)
Ground
Ground
Ground
Ground
9
11
13
15
10
12
14
16
-DB(4)
-DB(5)
-DB(6)
-DB(7)
Ground
Ground
Ground
Reserved
17
19
21
23
18
20
22
24
-DB(P)
Ground
CPRSNT
Reserved
Open
Reserved
Ground
Ground
25
27
29
31
26
28
30
32
TERMPWR
Reserved
Ground
-ATN
Ground
Ground
Ground
Ground
33
35
37
39
34
36
28
40
Ground
-BSY
-ACK
-RST
Appendix D. SCSI-2 Fast/Wide PCI-Bus Adapter Connectors
D-1
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