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5.3 Host Commands
C141-E259 5-105
Table 5.33 Information to be read by IDENTIFY DEVICE command (1/3)
Word Value Description
0 X '045A' General Configuration *1
1 X '3FFF' Number of Logical cylinders *2
2 X 'C837' Detailed Configuration *3
3 X '0010' Number of Logical Heads *2
4-5 X '0000' Undefined
6 X '003F' Number of Logical sectors per Logical track *2
7-9 X '0000' Undefined
10-19 Set by a device Serial number (ASCII code, 20 characters, right)
20 X '0003' Undefined
21 X 'xxxx' Buffer Size (1 LSB: 512 Bytes) ex. Buffer Size=8MBytes: X '4000'
22 X '0000' Reserved
23-26 – Firmware revision (ASCII code, 8 characters, left)
27-46 Set by a device Model name (ASCII code, 40 characters, left)
47 X '8010' Maximum number of sectors per block on READ/WRITE
MULTIPLE command
48 X '0000' Reserved
49 X '2F00' Capabilities *4
50 X '4000' Capabilities *5
51 X '0200' PIO data transfer mode *6
52 X '0200' Reserved
53 X '0007' Enable/disable setting of words 54-58 and 64-70, 88 *7
54 (Variable) Number of current Cylinders
55 (Variable) Number of current Head
56 (Variable) Number of current sectors per track
57-58 (Variable) Total number of current sectors
59 *8 Transfer sector count currently set by READ/WRITE
MULTIPLE command *8
60-61 *2 Total number of user addressable sectors (28bit LBA mode only)