Input/Output Interfaces

5.3.2 Diskette Drive Connector

The SFF, ST, MT, and CMT form factors use a standard 34-pin connector for diskette drives (refer to Figure 5-2 and Table 5-6 for the pinout). Drive power is supplied through a separate connector.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

4

 

6

 

8

 

10

 

12

 

14

 

16

 

18

 

20

 

22

 

24

 

26

 

28

 

30

 

32

 

34

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

5

 

7

 

9

 

11

 

13

 

15

 

17

 

19

 

21

 

23

 

25

 

27

 

29

 

31

 

33

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 5-2. 34-Pin Diskette Drive Connector (P10 on system board).

Table 5-6.

34-Pin Diskette Drive Connector Pinout

Pin

Signal

Description

Pin

Signal

Description

 

 

 

 

 

 

1

GND

Ground

18

DIR-

Drive head direction control

 

 

 

 

 

 

2

LOW DEN-

Low density select

19

GND

Ground

 

 

 

 

 

 

3

---

(KEY)

20

STEP-

Drive head track step cntrl.

 

 

 

 

 

 

4

MEDIA ID-

Media identification

21

GND

Ground

 

 

 

 

 

 

5

GND

Ground

22

WR DATA-

Write data

 

 

 

 

 

 

6

DRV 4 SEL-

Drive 4 select

23

GND

Ground

 

 

 

 

 

 

7

GND

Ground

24

WR ENABLE-

Enable for WR DATA-

 

 

 

 

 

 

8

INDEX-

Media index is detected

25

GND

Ground

 

 

 

 

 

 

9

GND

Ground

26

TRK 00-

Heads at track 00 indicator

 

 

 

 

 

 

10

MTR 1 ON-

Activates drive motor

27

GND

Ground

 

 

 

 

 

 

11

GND

Ground

28

WR PRTK-

Media write protect status

 

 

 

 

 

 

12

DRV 2 SEL-

Drive 2 select

29

GND

Ground

 

 

 

 

 

 

13

GND

Ground

30

RD DATA-

Data and clock read off disk

 

 

 

 

 

 

14

DRV 1 SEL-

Drive 1 select

31

GND

Ground

 

 

 

 

 

 

15

GND

Ground

32

SIDE SEL-

Head select (side 0 or 1)

 

 

 

 

 

 

16

MTR 2 ON-

Activates drive motor

33

GND

Ground

 

 

 

 

 

 

17

GND

Ground

34

DSK CHG-

Drive door opened indicator

 

 

 

 

 

 

 

5-8

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Technical Reference Guide