Datasheet

Travelstar 80GN Hard Disk Drive Specification
172
13.38.3.3 Attribute ID Numbers
Attribute ID Numbers supported by the device are the same as Attribute Values Data Structures.
13.38.3.4 Attribute Threshold
These values are preset at the factory and are not meant to be changeable. However, the host might use the
"S.M.A.R.T. Write Attribute Threshold" subcommand to override these preset values in the Threshold sectors.
13.38.3.5 Data Structure Checksum
The Data Structure Checksum is the 2's compliment of the result of a simple 8-bit addition of the first 511 bytes in
the data structure.
13.38.4 S.M.A.R.T. error log sector
The following defines the 512 bytes that make up the S.M.A.R.T. error log sector. All multibyte fields shown in
these data structures follow the ATA/ATAPI-5 specifications for byte ordering.
13.38.4.1 S.M.A.R.T. error log version
This value is set to 01h.
13.38.4.2 Error log pointer
This points to the most recent error log data structure. Only values 1 through 5 are valid.
13.38.4.3 Device error count
This field contains the total number of errors. The value will not roll over.
13.38.4.4 Error log data structure
The data format of each error log structure is shown below.
Table 117: Command data structure
Description Byte Offset
S.M.A.R.T. error log version 1 00h
Error log pointer 1 01h
1st error log data structure 90 02h
2nd error log data structure 90 5Ch
3rd error log data structure 90 B6h
4th error log data structure 90 110h
5th error log data structure 90 16Ah
Device error count 2 1C4h
Reserved 57 1C6h
Data structure checksum 1 1FFh
512
Description Byte Offset
1st command data structure 12 00h
2nd command data structure 12 0Ch
3rd command data structure 12 18h
4th command data structure 12 24h
5th command data structure 12 30h
Error data structure 30 3Ch
90