Connector Pin Assignments

ATA/ATAPI (IDE) Standard Drive CableConnector

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

 

 

 

 

 

 

 

 

CD-ROM 50-Pin Connector

Connector

Pin

Signal

Pin

Signal

Pin

Signal

Pin

Signal

 

 

 

 

 

 

 

 

1

Audio L-ch

14

DD12

27

IORDY

40

+5V

2

Audio R-ch

15

DD3

28

DMACK-

41

+5V

3

Audio GND

16

DD13

29

INTRQ

42

+5V

4

GND

17

DD2

30

IOCS16-

43

GND

5

RESET-

18

DD14

31

DA1

44

GND

 

 

 

 

 

 

 

 

6

DD8

19

DD1

32

PDIAG-

45

GND

7

DD7

20

DD15

33

DAO

46

GND

8

DD9

21

DD0

34

DA2

47

CSEL

9

DD6

22

DMARQ

35

CS1FX-

48

GND

10

DD10

23

GND

36

CS3FX-

49

Vendor-specific

 

 

 

 

 

 

 

 

11

DD5

24

DIOR-

37

DASP-

50

Vendor-specific

12

DD11

25

DIOW-

38

+5V

 

 

13

DD4

26

GND

39

+5V

 

 

 

 

 

 

 

 

 

 

 

Service Reference Guide, dx7300

433611-001

A–5