4.0ATA interface

These drives use the industry-standard ATA task file interface that supports 16-bit data transfers. It supports ATA programmed input/output (PIO) modes 0–4 and Ultra DMA modes 0–5. The drive also supports the use of the IORDY signal to provide reliable high-speed data transfers.

For detailed information about the ATA interface, refer to the draft of AT Attachment with Packet Interface Extension (ATA/ATAPI-7), NCITS T13, subsequently referred to as the Draft ATA-7 Standard.

4.1ATA interface signals and connector pins

The following table summarizes the signals on the 44-pin ATA interface connector. For a detailed description of these signals, refer to the Draft ATA-7 Standard.

Table 6:

Connector signals

 

 

 

 

 

 

 

Connector

Cable

Signal Name

Contact

Conductor

 

 

 

 

RESET-

 

1

1

 

 

 

 

DD7

 

3

3

 

 

 

 

DD6

 

5

5

 

 

 

 

DD5

 

7

7

 

 

 

 

DD4

 

9

9

 

 

 

 

DD3

 

11

11

 

 

 

 

DD2

 

13

13

 

 

 

 

DD1

 

15

15

 

 

 

 

DD0

 

17

17

 

 

 

 

Ground

 

19

19

 

 

 

 

DMARQ

 

21

21

 

 

 

 

DIOW-

 

23

23

 

 

 

 

DIOR-

 

25

25

 

 

 

 

IORDY

 

27

27

 

 

 

 

DMACK-

 

29

29

 

 

 

 

INTRQ

 

31

31

 

 

 

 

DA1

 

33

33

 

 

 

 

DA0

 

35

35

 

 

 

 

CS1FX-

 

37

37

 

 

 

 

DASP-

 

39

39

 

 

 

 

+5 V (Logic)

 

41

41

 

 

 

Ground (Return)

43

43

 

 

 

 

Cable

Connector

 

Conductor

Contact

Signal Name

 

 

 

2

2

Ground

 

 

 

4

4

DD8

 

 

 

6

6

DD9

 

 

 

8

8

DD10

 

 

 

10

10

DD11

 

 

 

12

12

DD12

 

 

 

14

14

DD13

 

 

 

16

16

DD14

 

 

 

18

18

DD15

 

 

 

20

20

(keypin)

 

 

 

22

22

Ground

 

 

 

24

24

Ground

 

 

 

26

26

Ground

 

 

 

28

28

PSYNC:CSEL

 

 

 

30

30

Ground

 

 

 

32

32

IOCS16-

 

 

 

34

34

PDIAG-

 

 

 

36

36

DA2

 

 

 

38

38

CS3FX-

 

 

 

40

40

Ground

 

 

 

42

42

+5V (Motor)

 

 

 

44

44

No connection

 

 

 

Momentus 5400 FDE Product Manual, Rev. C

25

Page 30 Page 32
Page 31
Image 31
Seagate ST9100826A, ST960814A, ST980821A, ST9120826A manual ATA interface signals and connector pins, Connector signals
Page 30 Page 32

ST940811A, ST960814A, ST9120826A, ST980821A, ST9100826A specifications

Seagate's ST9100826A, ST980821A, ST9120826A, ST960814A, and ST940811A hard drives represent some of the company's commitment to providing reliable and high-performance storage solutions. Each model features distinct specifications and technologies that cater to various data storage needs.

The ST9100826A is a 100 GB hard drive that utilizes a 7200 RPM spindle speed, ensuring quick data access and transfer rates. With an IDE interface, this drive supports a data transfer rate of up to 100 MB/s, making it suitable for intensive applications. Additionally, the ST9100826A comes equipped with a 2 MB cache, optimizing data retrieval speeds and enhancing overall performance.

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The ST9120826A, with a substantial capacity of 120 GB, continues the trend of high-performance drives in this lineup. Its 7200 RPM speed and 2 MB cache ensure that users experience efficient data handling. With a more advanced read/write head technology, the drive also minimizes noise during operation, making it suitable for both desktop environments and home media centers.

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In summary, Seagate’s ST9100826A, ST980821A, ST9120826A, ST960814A, and ST940811A each demonstrate innovative features and reliability across various storage needs. With diverse capacities, spindle speeds, and robust technologies, they solidify Seagate’s reputation as a leader in data storage solutions.
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