Diskette Drive Connector - Compaq EN Series Technical Reference Manual

5.3.2

DISKETTE DRIVE CONNECTOR

This system uses a standard 34-pin connector (refer to Figure 5-2 and Table 5-8 for the pinout)
for diskette drives. Drive power is supplied through a separate connector.
2
1
Figure 5–2. 34-Pin Diskette Drive Connector.
Table 5–8. 34-Pin Diskette Drive Connector Pinout
Pin Signal
1 GND
2 LOW DEN-
3 ---
4 MEDIA ID-
5 GND
6 DRV 4 SEL-
7 GND
8 INDEX-
9 GND
10 MTR 1 ON-
11 GND
12 DRV 2 SEL-
13 GND
14 DRV 1 SEL-
15 GND
16 MTR 2 ON-
17 GND
8 10 16 18
4 6 12 14
5 7 9 13 15 17
11
Table 5-8.
34-Pin Diskette Drive Connector Pinout
Description
Ground
Low density select
(KEY)
Media identification
Ground
Drive 4 select
Ground
Media index is detected
Ground
Activates drive motor
Ground
Drive 2 select
Ground
Drive 1 select
Ground
Activates drive motor
Ground
Compaq Deskpro EN Series of Personal Computers
First Edition - June 1998
Technical Reference Guide
24 26 32 34
20 22 28 30
21 23 25 29 31 33
19 27
Pin Signal
18 DIR-
19 GND
20 STEP-
21 GND
22 WR DATA-
23 GND
24 WR ENABLE-
25 GND
26 TRK 00-
27 GND
28 WR PRTK-
29 GND
30 RD DATA-
31 GND
32 SIDE SEL-
33 GND
34 DSK CHG-
Net PC and Small Form Factor Models
Description
Drive head direction control
Ground
Drive head track step control
Ground
Write data
Ground
Enable for WR DATA-
Ground
Heads at track 00 indicator
Ground
Media write protect status
Ground
Data and clock read off disk
Ground
Head select (side 0 or 1)
Ground
Drive door opened indicator
5-13