Ultrastar 36LZX
Electrical interface specifications |
Models: DDYS-T36950, T18350, T09170 |
Connectors |
68 pin SCSI connector
80 pin SCSI connector
68 pin power connector
|
| Signal Definitions |
68 pin signal definitions
80 pin signal definitions
|
| 68
Pin SCSI connector |
 |
| >[Top] |
|
| 80
Pin SCSI Connector |
|
|
[Top] |
|
|
68
Pin Power Connector
|
The DC power connectors used on all models (68 and 80 pin SCA-2) are an integral
portion of the 68 pin SCSI 'Unitized' Connectors and 80 pin 'Single Connector Attachment' (SCA-2) connector.
68 pin models use a Molex connector (PN 87360-0001) that is compatible with the ANSI
SCSI "P" connector.
The 80 pin SCA-2 models use a AMP connector (PN 5-917593-9).
Pin assignments for the 68 pin power connector are shown below. |
| |
| Pin |
Voltage |
| 1 |
+12 V |
| 2 |
Ground |
| 3 |
Ground |
| 4 |
+5 V |
| |
 |
|
[Top] |
|
| 68
Pin Signal Definitions
|
| The pin assignments
of interface signals conform to ANSI SPI-2 T10 Project 1142D
Revision 19 as follows: |
| |
| Signal name |
Pin |
Signal name |
| +DB(12) |
1 |
35 |
-DB(12) |
| +DB(13) |
2 |
36 |
-DB(13) |
| +DB(14) |
3 |
37 |
-DB(14) |
| +DB(15) |
4 |
38 |
-DB(15) |
| +DB(P1) |
5 |
39 |
-DB(P1) |
| +DB(0) |
6 |
40 |
-DB(0) |
| +DB(1) |
7 |
41 |
-DB(1) |
| +DB(2) |
8 |
42 |
-DB(2) |
| +DB(3) |
9 |
43 |
-DB(3) |
| +DB(4) |
10 |
44 |
-DB(4) |
| +DB(5) |
11 |
45 |
-DB(5) |
| +DB(6) |
12 |
46 |
-DB(6) |
| +DB(7) |
13 |
47 |
-DB(7) |
| +P_CRCA |
14 |
48 |
-P_CRCA |
| Ground |
15 |
49 |
Ground |
| DIFFSENS (*2) |
16 |
50 |
Ground |
| Terminator power (*1) |
17 |
51 |
Terminator power (*1) |
| Terminator power (*1) |
18 |
52 |
Terminator power (*1) |
| Reserved |
19 |
53 |
Reserved |
| Ground |
20 |
54 |
Ground |
| +ATN |
21 |
55 |
-ATN |
| Ground |
22 |
56 |
Ground |
| +BSY |
23 |
57 |
-BSY |
| +ACK |
24 |
58 |
-ACK |
| +RST |
25 |
59 |
-RST |
| +MSG |
26 |
60 |
-MSG |
| +SEL |
27 |
61 |
-SEL |
| +C/D |
28 |
62 |
-C/D |
| +REQ |
29 |
63 |
-REQ |
| +I/O |
30 |
64 |
-I/O |
| +DB(8) |
31 |
65 |
-DB(8) |
| +DB(9) |
32 |
66 |
-DB(9) |
| +DB(10) |
33 |
67 |
-DB(10) |
| +DB(11) |
34 |
68 |
-DB(11) |
Notes:
- Terminator power can be disabled.
- HVD is not supported.
|
|
[Top] |
|
| 80 Pin Signal Definitions
|
| The 80 pin SCA-2 model uses an AMP connector which is compatible with SFF-8046 Revision 2.1. |
| Signal name |
Pin |
Signal name |
| 12 V Charge |
1 |
41 |
12 V Ground |
| 12 Volt |
2 |
42 |
12 V Ground |
| 12 Volt |
3 |
43 |
12 V Ground |
| 12 Volt |
4 |
44 |
Mated 1 |
| Opt 3.3 V/NC |
5 |
45 |
Opt 3.3 V charge/NC |
| Opt 3.3 V/NC |
6 |
46 |
DIFFSENS (*1) |
| -DB(11) |
7 |
47 |
+DB(11) |
| -DB(10) |
8 |
48 |
+DB(10) |
| -DB(9) |
9 |
49 |
+DB(9) |
| -DB(8) |
10 |
50 |
+DB(8) |
| -I/O |
11 |
51 |
+I/O |
| -REQ |
12 |
52 |
+REQ |
| -C/D |
13 |
53 |
+C/D |
| -SEL |
14 |
54 |
+SEL |
| -MSG |
15 |
55 |
+MSG |
| -RST |
16 |
56 |
+RST |
| -ACK |
17 |
57 |
+ACK |
| -BSY |
18 |
58 |
+BSY |
| -ATN |
19 |
59 |
+ATN |
| -P_CRCA |
20 |
60 |
+P_CRCA |
| -DB(7) |
21 |
61 |
+DB(7) |
| -DB(6) |
22 |
62 |
+DB(6) |
| -DB(5) |
23 |
63 |
+DB(5) |
| -DB(4) |
24 |
64 |
+DB(4) |
| -DB(3) |
25 |
65 |
+DB(3) |
| -DB(2) |
26 |
66 |
+DB(2) |
| -DB(1) |
27 |
67 |
+DB(1) |
| -DB(0) |
28 |
68 |
+DB(0) |
| -DB(P1) |
29 |
69 |
+DB(P1) |
| -DB(15) |
30 |
70 |
+DB(15) |
| -DB(14) |
31 |
71 |
+DB(14) |
| -DB(13) |
32 |
72 |
+DB(13) |
| -DB(12) |
33 |
73 |
+DB(12) |
| 5 Volt |
34 |
74 |
Mated 2 |
| 5 Volt |
35 |
75 |
5 V Ground |
| 5 V Charge |
36 |
76 |
5 V Ground |
| Spindle Sync/NC |
37 |
77 |
Active LED Out |
| RMT Start |
38 |
78 |
Delayed Start |
| -SCSI ID(0) |
39 |
79 |
-SCSI ID(1) |
| -SCSI ID(2) |
40 |
80 |
-SCSI ID(3) |
Notes:
- HVD is not supported.
- SCA-2 connector is not mechanically compatible with the 68-pin "P" connector as defined in
the ANSI SCSI standard. The connector is intended for direct back plane attachment and is
not intended to be cable attached to the bus.
|
|
|
|
