Figure B-5 Scsi Connector; Table B-4 Scsi Pin Assignments - Sun Microsystems Ultra 1 140 Service Manual

B.4 SCSI
Pin Signal Name
1 gnd
2 gnd
3 gnd
4 gnd
5 gnd
6 gnd
7 gnd
8 gnd
9 gnd
10 gnd
11 gnd
12 gnd
13 vcc
14 gnd
15 gnd
16 gnd
17 gnd
18 gnd
19 gnd
20 gnd
This connector is located on the back panel of the system board.
25
50
Figure B-5 SCSI Connector
Table B-4 SCSI Pin Assignments
Description
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Vcc
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Signal Descriptions
Pin Signal Name
26 scsi dat 0
27 scsi dat 1
28 scsi dat 2
29 scsi dat 3
30 scsi dat 4
31 scsi dat 5
32 scsi dat 6
33 scsi dat 7
34 scsi par 0
35 gnd
36 No connect
37 gnd
38 Termpower
39 gnd
40 gnd
41 scsi atn l
42 gnd
43 scsi bsy l
44 scsi ack l
45 scsi reset l
B
1
26
Description
SCSI data 0
SCSI data 1
SCSI data 2
SCSI data 3
SCSI data 4
SCSI data 5
SCSI data 6
SCSI data 7
SCSI parity 0
Ground
Ground
Termpower
Ground
Ground
SCSI attention
Ground
SCSI busy
SCSI acknowledge
SCSI reset
B-5