Appendix A. Connector Pin Assignments
SCSI 50-pin Connector
1
2
50
49
Figure 7. SCSI 50-pin Connector
This connector is a 50-pin, shrouded berg strip located on the system board.
Table 41. Pin Assignments for the SCSI 50-pin Connector
Pin
Signal Name
I/O
Pin
Signal Name
I/O
1
Ground
NA
2
DB0#
I/O
3
Ground
NA
4
DB1#
I/O
5
Ground
NA
6
DB2#
I/O
7
Ground
NA
8
DB3#
I/O
9
Ground
NA
10
DB4#
I/O
11
Ground
NA
12
DB5#
I/O
13
Ground
NA
14
DB6#
I/O
15
Ground
NA
16
DB7#
I/O
17
Ground
NA
18
DBP#
I/O
19
Ground
NA
20
Ground
NA
21
Ground
NA
22
Ground
I
8
23
Ground
NA
24
Ground
NA
25
Not connected
NA
26
TERM PWR
NA
27
Ground
NA
28
Ground
NA
29
Ground
NA
30
Ground
NA
31
Ground
NA
32
ATN#
I/O
33
Ground
NA
34
Ground
NA
35
Ground
NA
36
BSY#
I/O
37
Ground
NA
38
ACK#
I/O
39
Ground
NA
40
RST#
I/O
41
Ground
NA
42
MSG#
I/O
43
Ground
NA
44
SEL#
I/O
45
Ground
NA
46
C/D#
I/O
47
Ground
NA
48
REQ#
I/O
49
Ground
NA
50
I/O#
I/O
8
This pin is used to detect an attached cable.
44
Technical Information Manual