Emulex MD21/S2, Technical Manual

Page: 74 / 88

Disk Drive Interface
Table 7-4. Control Cable Pin Assignments
Pin Signal Name
Input/Output
1
GND
—
2 -HEAD SELECT 2 Output
3 GND
—
4
-HEAD SELECT 2
Output
5
GND
—
6 -WRITE GATE Output
7 GND
—
8 -CONFIGURATION DATA Input
-STATUS DATA Input
9
GND
—
10 -TRANSFER ACK Input
11 GND
—
12 -ATTENTION
Input
13 GND
- -
14 -HEAD SELECT 2 Output
15 GND
—
16
-SECTOR Input
-ADDRESS MARK FOUND Input
17 GND
—
18 -HEAD SELECT 2
Output
19 GND
—
20 -INDEX
Input
21 GND
—
22 -READY Input
23
GND
—
24 -TRANSFER REQ Output
25 GND
—
26 -DRIVE SELECT 1 Output
27 GND
—
28 -DRIVE SELECT 2
Output
29
GND
—
30 -DRIVE SELECT 3 Output
31
GND
—
32 -READ GATE Output
33 GND
—
34 -COMMAND DATA Output
7-16
Interfaces