IBM DCAS-32160 - Ultrastar 2.1 GB Hard Drive, Specifications

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6.0 Specification
6.1 Electrical Interface Specification
6.1.1 Connectors
6.1.1.1 Power Connector
Power pin assignment of 80-pin (SCA-2) model is shown in 6.1.1.4, “SCSI Signal Connector (80-pin)” on
page 23.
Power pin assignment of 50-pin and 68-pin models is as shown below.
Figure 14. Power Connector Pin Assignments
6.1.1.2 SCSI Signal Connector (50-pin)
The SCSI signal connector complies with ANSI SCSI-2.
Pin
1
2
3
4
Voltage
+ 12 V
G N D
G N D
+ 5 V
Figure 15. Table of Signals
PIN SIGNAL PIN SIGNAL
01
03
05
07
09
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49 Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Open
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground 02
04
06
08
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50 -DB(0)
-DB(1)
-DB(2)
-DB(3)
-DB(4)
-DB(5)
-DB(6)
-DB(7)
-DB(P)
Ground
Ground
Ground
T R M Power
Ground
Ground
-ATN
Ground
-BSY
-ACK
-RST
-MSG
-SEL
-C/D
-REQ
-I/O

Copyright IBM Corp. 1996
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