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10.18.3.4 SCT Data Table Command (action code : 0005h)
Table 60 SCT Data Table command (Inputs)
Inputs: (Key Sector)
Word
Name
Value
Description
0
Action Code
0005h
Read a data table
1
Function Code
0001h
Read Table
2
Table ID
Word
See Table 63 for a list of data tables
255:2
Reserved
0000h
Table 61 SCT Data Table command (Outputs)
Outputs: (TF Data)
Command Block Input Registers (Success)
Error
00h
Sector Count
Reserved
Sector Number
Reserved
Cylinder Low
Number of sectors to transfer (LSB) = 01h
Cylinder High
Number of sectors to transfer (MSB) = 00h
Device/Head
Reserved
Status
50h
Table 62 Table ID
Table ID
Description
0000h
Invalid
0001h
Reserved
0002h
HDA Temperature History Table (in absolute degree C).
See Note 1 – The Absolute HDA Temperature History is
preserved across power cycles with the requirement that
when the drive powers up, a new entry is made in the
history queue of 80h, an invalid absolute temperature value.
This way an application viewing the history can see the
discontinuity in temperature result from the drive being
turned off.
Note 2 – When the Absolute HDA Temperature history is
cleared, for new drives or after changing the Logging
Interval, the Queue Index shall be set to zero and the first
queue location shall be set to the current Absolute HDA
Temperature value. All remaining queue locations are set to
80h.
0003h-CFFFh
Reserved
D000h-FFFFh
Vendor Specific
99
Hard Disk Drive Specification