Scsi Bus Connector; Scsi Signal Connector (68-Pin Model); Table 14. Table Of Signals (68-Pin) - Hitachi HUS151473VL3800 - Ultrastar 73.4 GB Hard Drive Specifications

7.2 SCSI bus connector

The Hitachi Ultrastar 15K147 has 68-pin models and 80-pin SCA-2 models.

7.2.1 SCSI signal connector (68-pin model)

The pin assignments of the interface signals conform to SPI-4 as shown in the table below.
Table 14: Table of signals (68-pin)
Connector contact
number
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
Note: *1 TERMPWR can be disabled
*2 HVD is not supported
Signal name
+DB(12)
+DB(13)
+DB(14)
+DB(15)
+DB(P1)
+DB(0)
+DB(1)
+DB(2)
+DB(3)
+DB(4)
+DB(5)
+DB(6)
+DB(7)
+P_CRCA
Ground
DIFFSENS(*2)
TERMPWR(*1)
TERMPWR(*1)
Reserved
Ground
+ATN
Ground
+BSY
+ACK
+RST
+MSG
+SEL
+C/D
+REQ
+I/O
+DB(8)
+DB(9)
+DB(10)
+DB(11)
Hitachi Ultrastar 15K147 SCSI Hard Disk Drive Specification
Connector contact
number
35 -DB(12)
36 -DB(13)
37 -DB(14)
38 -DB(15)
39 -DB(P1)
40 -DB(0)
41 -DB(1)
42 -DB(2)
43 -DB(3)
44 -DB(4)
45 -DB(5)
46 -DB(6)
47 -DB(7)
48 -P_CRCA
49 Ground
50 Ground
51 TERMPWR(*1)
52 TERMPWR(*1)
53 Reserved
54 Ground
55 -ATN
56 Ground
57 -BSY
58 -ACK
59 -RST
60 -MSG
61 -SEL
62 -C/D
63 -REQ
64 -I/O
65 -DB(8)
66 -DB(9)
67 -DB(10)
68 -DB(11)
22
Signal name