Serial and Parallel ATA Drive Guidelines and Features

4.3 PATA Device Information

This information applies to optical drives in a computer having one or two SATA drive controllers and a single PATA drive controller.

Only a MultiBay PATA hard drive is supported on these computers. No other PATA hard drives are supported on these models.

Parallel ATA MultiBay Hard Drive Characteristics

Number of pins/conductors in data cable

40/80

 

 

Number of pins in power cable

4

 

 

Maximum data cable length

18 in (45.7 cm)

 

 

Data interface voltage

5V

 

 

Drive voltages

5V

 

 

Jumpers for configuring drive

Required

 

 

Data transfer rate

24 MB/s

 

 

4.4 PATA Cables

4.4.1 PATA Data Cable

Pin

Signal

Pin

Signal

Pin

Signal

 

 

 

 

 

 

1

Reset

15

DD1

29

DMAK

2

Ground

16

DD14

30

Ground

3

DD7

17

DD0

31

INTRQ

4

DD8

18

DD15

32

IOCS16

5

DD6

19

Ground

33

DA1

 

 

 

 

 

 

6

DD9

20

(Key)

34

PDIAG (cable detect)

7

DD5

21

DMARQ

35

DA0

8

DD10

22

Ground

36

DA2

9

DD4

23

DIOW

37

CS1FX

10

DD11

24

Ground

38

CS3FX

 

 

 

 

 

 

11

DD3

25

DIOR

39

DASP

12

DD12

26

Ground

40

Ground

13

DD2

27

IORDY

 

 

14

DD13

28

CSEL

 

 

 

 

 

 

 

 

Service Reference Guide, dc7600

390742-002

4–3