Filter
Top Products
Command Specifications
Table 4.22 Log parameter
Bit
Byte
7 6 5 4 3 2 1 0
0 Parameter Code (MSB)
1 Parameter Code (LSB)
2 DU DS TSD ETC TMC LBIN LP
3 Parameter Length
4
n
Parameter Value
~
a. Parameter code
This field identifies the log parameter being transferred for that log page.
b. Byte 2
1) DU (Disable Update)
"1": The HDD does not update the log parameter value except in response to a
LOG SELECT command that specifies a new value for the parameter.
"0": The HDD updates the log parameter value to reflect all events that are
noted by that parameter.
2) DS (Disable Save)
"1": The HDD does not support saving that log parameter in response to LOG
SELECT or LOG SENSE command with an "SP" bit of one.
"0": The HDD supports saving for that log parameter. The HDD saves the
current parameter value in response to LOG SELECT or LOG SENSE
command with a "SP" bit of one.
3) TSD (Target Save Disable)
The HDD does not support this bit. For LOG SENSE command (See 4.1.16),
the HDD always report zero. Also, for this command, the HDD accepts this
bit value of "1", but ignores its functionality.
4) ETC (Enable Threshold Comparison)
The HDD does not support this bit. For LOG SENSE command (See 4.1.16),
the HDD always report zero. Also, for this command, the HDD accepts this
bit value of "1", but ignores its functionality.
~
~
190 C141-C013