Maxtor 54098U8 InitializationCommands, When the command is received, the drive 1. Sets BSY

Models: 51536U3 53073U6 52049U4 54098U8 51024U2

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INTERFACE COMMANDS

InitializationCommands

Identify Drive

Allows the host to receive parameter information from the drive.

When the command is received, the drive:

1.Sets BSY,

2.Stores the required parameter information in the sector buffer,

3.Sets the DRQ bit and

4.Generates an interrupt.

The host may then read the information out of the sector buffer. Parameter words in the buffer follow. Note that all reserved bits or words should be zeroes.

WORD

CONTENT DESCRIPTION

 

 

0

General configuration

 

15 = device (0 = ATA device, 1 = ATAPI)

 

14-8 = retired

 

7, 1 = removable media device

 

 

 

6, 1 = not removable controller and/or device

 

 

 

5-3 = retired

 

 

 

2 = response incomplete

 

 

 

1 = retired

 

 

 

0 = reserved

 

 

1

Number of logical cylinders

 

 

2

Reserved

3

Number of logical heads

4-5

Retired

6

Number of logical sectors per logical track

7-8

Reserved

9

Retired

10 - 19

Drive serial number (20 ASCII characters)

20

Not used

 

 

21

Buffer size in 512 byte increments (0000h = not specified)

 

 

22

Number of Maxtor specific bytes available on Read/Write Long commands

 

 

23 - 26

Firmware revision (8 ASCII characters)

 

 

27 - 46

Model number (40 ASCII characters)

 

 

47

Maximum number of sectors that can be transferred per interrupt on read and write multiple commands

 

 

48

Reserved

 

 

49

Capabilities

 

15 - 14 = reserved

 

13 = standby timer (1 = values as specified in this standard are supported, 0 = values are Maxtor specific)

 

12 = reserved (advanced PIO mode support)

 

11, 1 = IORDY supported, 0 = IORDY may be supported

 

10, 1 = IORDY can be disabled

 

9-8 = reserved

 

7-0 = not used

 

 

7 – 9

Page 49
Image 49
Maxtor 54098U8 InitializationCommands, Allows the host to receive parameter information from the drive, Identify Drive