B-2 SPARCstation 5 Service Manual—November 1996
B
B.1 SCSI Connector (External)
Figure B-1 External SCSI Connector
1. All signals are active low.
Table B-1 Pinout Signals
1
for External SCSI Connector
Pin Description Pin Description Pin Description
1 Ground 19 Ground 37 Ground
2 Ground 20 Ground 38 Termpower
3 Ground 21 Ground 39 Ground
4 Ground 22 Ground 40 Ground
5 Ground 23 Ground 41 Attention
6 Ground 24 Ground 42 Ground
7 Ground 25 Ground 43 Busy
8 Ground 26 Data 0 44 Acknowledge
9 Ground 27 Data 1 45 Reset
10 Ground 28 Data 2 46 Message
11 Ground 29 Data 3 47 Select
12 Ground 30 Data 4 48 Control data
13 N/C 31 Data 5 49 Request
14 Ground 32 Data 6 50 Direction
15 Ground 33 Data 7
16 Ground 34 Parity
17 Ground 35 Ground
18 Ground 36 Ground
50
25
26
1
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