User guide

3.1.2 Identify Device Data
The following table details the sector data returned after issuing an IDENTIFY DEVICE command.
Word
F=Fixed
V=Variable
X=Both
Default Value Description
0 F 0040h
General configuration bit-significant
information
1 X 3FFFh Obsolete-Number of logical cylinders (16,383)
2 V C837h Specific configuration
3 X 0010h Obsolete-Number of logical heads (16)
4-5 X 0h Retired
6 X 003Fh
Obsolete-Number of logical sectors per logical
track (63)
7-8 V 0h
Reserved for assignment by the Compact
Flash Association
9 X 0h Retired
10-19 F varies Serial number (20 ASCII characters)
20-21 X 0h Retired
22 X 0h Obsolete
23-26 F varies Firmware revision (8 ASCII characters)
27-46 F varies Model number
47 F 8010h
7:0 – Maximum number of sectors transferred
per interrupt on multiple commands
48 F 0h Reserved
49 F 2F00h Capabilities
50 F 4000h Capabilities
51-52 X 0h Obsolete
53 F 0007h Words 88 and 70:64 valid
54 X 3FFFh
Obsolete - Number of logical cylinders
(16,383)
55 X 0010h Obsolete - Number of logical heads (16)
56 X 003Fh
Obsolete - Number of logical sectors per
logical track (63)
57-58 X 00FBFC10h Obsolete
59 F 0101h
Number of sectors transferred per interrupt
on multiple commands
60-62 125,045,424
63
F
(64GB)
Total number of user addressable sectors
Specification 17