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Western Digital Hard Disk Drive OEM Specification
11.23.5
Power Conditions log
Defines the Power Conditions log. If the Extended Power Conditions feature set is not supported, then the Power
Conditions log not is supported. Each Power is composed of the following formats.
Idle power conditions (log page 00h)
Offset
Type
Description
0-63
Byte
Idle_a power conditions descriptor.
Power condition supported is set to one to indicate that the idle_a power
condition is supported.
64-127
Byte
Idle_b power conditions descriptor.
Power condition supported is set to one to indicate that the idle_b power
condition is supported.
128-191 Byte
Idle_c power conditions descriptor.
Power condition supported is set to one to indicate that the idle_c power condition
is supported.
192-511 Byte
Reserved
Table 161 Idle power conditions (log page 00h)
Standby power conditions (log page 01h)
Offset
Type
Description
0-383
Byte
Reserved
384-447 Byte
Standby_y power conditions descriptor.
Power condition supported is set to one to indicate that the standby_y power
condition is supported.
448-511 Byte
Standby_z power conditions descriptor.
Power condition supported is set to one to indicate that the standby_z power
condition is supported.
Table 162 Standby power conditions (log page 01h)