SC2500 User Guide Ver 2.1
May 6, 2003
Page 6 of 26
3.2.2 SCSI Connector Pinout
The following shows the pin connections for the SCSI connector used on the
SC2500.
PIN SIGNAL PIN SIGNAL
1
+5 Volt Power
2
+5 Volt Power
3 GROUND
4 GROUND
5 GROUND
6 -DB0
7 GROUND
8 -DB1
9 GROUND
10 -DB2
11 GROUND
12 -DB3
13 GROUND
14 -DB4
15 GROUND
16 -DB5
17 KEY
18 -DB6
19 GROUND
20 -DB7
21 GROUND
22 -DBP
23 GROUND
24 TERMPWR
25 -ATN
26 -BSY
27 GROUND
28 -ACK
29 -RST
30 -MSG
31 GROUND
32 -SEL
33 -IO
34 -C/D
35 GROUND
36 -REQ
37 GROUND
38 GROUND
39
+5 Volt Power
40
+5 Volt Power
41 RSVD
42 RSVD
43 RSVD
44 RSVD
45 ID1
46 ID2
47 ID3
48 -LED
49 NC
50 NC
3.3 SCSI Commands
3.3.1 Test Unit Ready Command – 00h
Test Unit Ready CDB
The TEST UNIT READY command provides a means to check if the logical unit
is ready. This is not a request for a self-test. If the logical unit would accept an
