HP 6649F (US/CAN), 6744 (US), 6730 (US/CAN), 6657 (LA), 6648C (US) O pins and supported ATA signals

22

U10 Family Product Manual, Rev. A

Drive pin #

Signal name

Host pin # and signal description

1

Reset–

1

Hardware Reset

2

Ground

2

Ground

3

DD7

3

Host Data Bus Bit 7

4

DD8

4

Host Data Bus Bit 8

5

DD6

5

Host Data Bus Bit 6

6

DD9

6

Host Data Bus Bit 9

7

DD5

7

Host Data Bus Bit 5

8

DD10

8

Host Data Bus Bit 10

9

DD4

9

Host Data Bus Bit 4

10

DD11

10

Host Data Bus Bit 11

11

DD3

11

Host Data Bus Bit 3

12

DD12

12

Host Data Bus Bit 12

13

DD2

13

Host Data Bus Bit 2

14

DD13

14

Host Data Bus Bit 13

15

DD1

15

Host Data Bus Bit 1

16

DD14

16

Host Data Bus Bit 14

17

DD0

17

Host Data Bus Bit 0

18

DD15

18

Device Data (15:0)

19

Ground

19

Ground

20

(removed)

20

(No Pin)

21

DMARQ

21

DMA Request

22

Ground

22

Ground

23

DIOW–

23

Device I/O Write:

STOP

Stop Ultra DMA Burst

24

Ground

24

Ground

25

DIOR–

25

Device I/O Read:

HDMARDY–

Host Ultra DMA Ready:

HSTROBE

Host Ultra DMA Data Strobe

26

Ground

26

Ground

27

IORDY

27

I/O Channel Ready

DDMARDY–

Device Ultra DMA Ready

DSTROBE

Device Ulta DMA Data Strobe

28

CSEL

28

Cable Select

29

DMACK–

29

DMA Acknowledge

30

Ground

30

Ground

31

INTRQ

31

Device Interrupt

32

IOCS16–

32

Reserved

33

DA1

33

Host Address Bus Bit 1

34

PDIAG–

34

Passed Diagnostics

CBLID–

Cable Assembly Type Identifier

35

DA0

35

Device Address (2:0)

36

DA2

36

Device Address (2:0)

37

CS0–

37

Chip Select (1:0)

38

CS1–

38

Chip Select (1:0)

39

DASP–

39

Drive Active/Slave Present

40

Ground

40

Ground