Initialization Commands; Identify Drive - Maxtor 2B020H1 Product Manual

INTERFACE COMMANDS

Initialization Commands

Initialization Commands
Initialization Commands Initialization Commands Initialization Commands

Identify Drive

Identify Drive Identify Drive
Identify Drive 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.
W OR D CONT ENT DESC RIPTION
0 General configuration
15 = devi ce (0 = ATA device, 1 = ATAPI)
14-8 = reti red
7, 1 = removable media devi ce
6, 1 = not removabl e controller and/or devi ce
5-3 = retired
2 = response i ncomplete
1 = reti red
0 = reserved
1 Number of logical cylinders
2 Reserved
3 Number of logical heads
4-5 Retired
6 Number of l ogical sectors per logic al track
7-8 Reserved
9 Retired
10 - 19 Dri ve seri al number (20 ASCII characters )
20 - 21 Retired
22 Obsolete
23 - 26 F irmware revision (8 ASCII characters )
27 - 46 Model number (40 ASCII characters )
47 Maxi mum number of sectors that c an be transferred per i nterrupt on read and write mul ti ple commands
48 Reserved
49 C apabili ti es
15 - 14 = reserved
13 = s tandby timer (1 = val ues as speci fied in thi s s tandard are s upported, 0 = values are Maxtor specific )
12 = reserved (advanc ed PIO mode support)
11, 1 = IORD Y supported, 0 = IORDY may be supported
10, 1 = IORDY can be di sabl ed
9-8 = shall be set to one. Us ed by Identify Packet Device comm and.
7-0 = not us ed
7 – 10