DISK DRIVE OPERATION

Table 6-2 lists the signal name mnemonic, connector pin number, whether input to (I) or output from (O) the drive, and the full signal name.

Table 6-2Interface Signals Description

Signal

Pin

DIR

Description

CS1FX- CS3FX- DA0 DA1 DA2 DASP- DD0 DD1 DD2 DD3 DD4 DD5 DD6 DD7 DD8 DD9 DD10 DD11 DD12 DD13 DD14 DD15 DIOR- DIOW-

DMACK- DMARQ INTRQ IOCS16-

IORDY PDIAG- RESET- Key pin

37

38

35

33

36

39

17

15

13

11

9

7

5

3

4

6

8

10

12

14

16

18

25

23

29

21

31

32

27

34

1

20

I

I

I

I

I

I/O

I/O

I/O

I/O

I/O

I/O

I/O

I/O

I/O

I/O

I/O

I/O

I/O

I/O

I/O

I/O

I/O

I

I

I

O

O

O

O

I/O

I

Drive chip Select 0 Drive chip Select 1 Drive Address Bus - Bit 0

- Bit 1

- Bit 2 Drive Active/Slave Present Drive Data Bus - Bit 0

- Bit 1

- Bit 2

- Bit 3

- Bit 4

- Bit 5

- Bit 6

- Bit 7

- Bit 8

- Bit 9

- Bit 10

- Bit 11

- Bit 12

- Bit 13

- Bit 14

- Bit 15

Drive I/O Read

Drive I/O Write DMA Acknowledge DMA Request Drive Interrupt Drive 16-bit I/O I/O Channel Ready Passed Diagnostics Drive Reset

Pin used for keying the interface connector

NOTE: A minus sign follows the name of any signal that is asserted as active low. Direction (DIR) is in reference to the drive:

IN indicates input to the drive.

OUT indicates output from the drive.

I/O indicates that the signal is bi-directional.

SpinPoint V40 Product Manual

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Samsung 3.5 hard disk drives, spinpoint v40 manual Dir