Hitachi HDS721050CLA362 - Page 197

HITACHI Deskstar & CinemaStar 7K1000.B & Deskstar E7K1000 Hard Disk Drive specification
193
Y
2
=(x-40h) * 60 + 600[sec] (600<=Y
2
<=4380)
When Low RPM standby mode is the deepest Power Saving mode and the value in Sector Count register is
between 01h and 3Fh,
120<=Y
1
<=435 [sec] (default: 120 [sec])
Y
2
=600 [sec]
where x is the value in Sector Count register, y
1
is the idle time to Low Power Idle mode, and y
2
is the idle time
to Low RPM standby mode.
If Low power idle mode has already been enabled (i.e., y
1
has been set) before Low RPM standby mode is
enabled, y
1
is preserved. If Low power idle mode is disabled (i.e., y
1
has not been set yet), y
1
becomes 120[sec]
when Low RPM standby mode is enabled.