Maxtor DiamondMax 17 80-160GB AT Hard Disk Drive 5-5
ATA Bus Interface and ATA Commands
5.5.3 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.
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)
20-21 Retired
22 Reserved
23-26 Firmware revision (8 ASCII characters)
27-46 Model number (40 ASCII characters)
Table 5-2
Identify Drive Command Parameters
