Diskette Drive Connector - Compaq Evo D500 Technical Reference Manual

5.3.2 DISKETTE DRIVE CONNECTOR

This system uses a standard 34-pin connector (refer to Figure 5-2 and Table 5-6 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 5–6. 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
4 6 8 10 12 14 16
5 7 9 11 13 15
Table 5-6.
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
Featuring Intel Celeron and Pentium III Processors
Fifth Edition - March 2002
Technical Reference Guide
18 20 22 24 26 28
17 19 21 25 27
23
Pin Signal Description
18 DIR- Drive head direction control
19 GND Ground
20 STEP- Drive head track step control
21 GND Ground
22 WR DATA- Write data
23 GND Ground
24 WR ENABLE- Enable for WR DATA-
25 GND Ground
26 TRK 00- Heads at track 00 indicator
27 GND Ground
28 WR PRTK- Media write protect status
29 GND Ground
30 RD DATA- Data and clock read off disk
31 GND Ground
32 SIDE SEL- Head select (side 0 or 1)
33 GND Ground
34 DSK CHG- Drive door opened indicator
Compaq Deskpro and Evo Personal Computers
30 32
34
29 31 33
5-7