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189
Western Digital Hard Disk Drive OEM Specification
Offset
Type
Description
12-15
DWord
Current Timer setting
The Current Timer setting is the minimum time that the device shall wait after command
completion before entering this power condition if the EPC feature set is enabled.
The Current Timer Setting field shall be cleared to zero if:
a)
EPC is disabled;
b)
the Power Condition Supported bit is cleared to zero; or
c)
the Current Timer Enabled field is cleared to zero.
A value of FFFF_FFFFh indicates that the time is greater than or equal to 429_496_729_500
milliseconds.
Measurement Units: 100 milliseconds
16-19
DWord
Nominal Recovery time from to PM0:Active power management state
The Nominal Recovery time from power to PM0: Active is the nominal time required to
transition from power to PM0: Active power management state. This time does not include
processing time for the command that caused this transition to occur. A value of zero
indicates that the nominal recovery time is not specified. A value of FFFF_FFFFh indicates
that the recovery time is greater than or equal to 429 496 729 500 milliseconds.
Measurement Units: 100 milliseconds.
This value is preserved over all resets.
20-23
DWord
Minimum timer setting
The Minimum timer setting is the minimum timer value allowed by the Set Power
Condition Timer subcommand for the timer. A value of zero indicates that the minimum timer
value is not specified. A value of FFFF_FFFFh indicates that the minimum timer value is
greater than or equal to 429 496 729 500 milliseconds.
Measurement Units: 100 milliseconds
This value be preserved over all resets
24-27
DWord
Maximum timer setting
The Maximum timer setting is the maximum timer value allowed by the Set Power
Condition Timer subcommand for the timer. A value of zero indicates that the maximum timer
value is not specified. A value of FFFF_FFFFh indicates that the maximum timer value is
greater than or equal to 429 496 729 500 milliseconds.
Measurement Units: 100 milliseconds
This value be preserved over all resets
28-63
DWord
Reserved
Table 164 Power condition log description - Continued -