Maxtor FIREBALL3 Service Manual download pdf (Page 33)

ATA Bus Interface and ATA Commands

Maxtor Fireball3 5-5

Identify Drive Command

This command 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

4. Generates an interrupt

The host may then read the information out of the sector buffer. Parameter words in

the buffer are shown in Table 5-2.

Note: All reserved bits or words should be zeroes.

Table 5-2 Identify Drive Command Parameters

Word CONTENT DESCRIPTION

0 General configuration bit-significant information:

15: 0 = ATA device

14-8: Retired

7: 1 = removable media device

6: Obsolete

5-3: Retired

2: Response incomplete

1: Retired

0: Reserved

1 Obsolete

2 Specific configuration

3 Obsolete

4-5 Retired

6 Obsolete

7-8 Reserved for assignment by the CompactFlash Association

9 Retired

10-19 Serial number (20 ASCII characters)

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 54 55

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Maxtor FIREBALL3 Service Manual Page 33