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Chapter 3
3rd state is a hibernate or suspend-to-disk state (S4).
In this state there are no internal operations taking placing, except for the internal RTC. This
includes no activity for the CPU, CD-ROM, or hard disk drives. The ReadyBoard 800 appears to
be off, including the Power On LED. Your system will take longer to wake-up in this sleep state,
however, since your data is saved to the disk, it is more secure and should not be lost in the event
of a power failure.
♦
To enter a hibernate or suspend-to-disk state, the ReadyBoard 800 must be fully powered on
and the OS transitions the ReadyBoard 800 into this sleep state (S4) under user control.
♦
To exit this sleep state, typically pressing the power switch for less than 4 seconds (default)
will restore full operation.
th
4
state is the normal power Off or shutdown (S5).
All activity stops except the internal clock, unless the power cord is removed from the power
source.
♦
To go to a fully powered down state, the ReadyBoard 800 must either be powered On, or in a
sleep state, and then the Power On/Off switch is pressed for more than 4-to-6 seconds.
♦
To go to a fully powered up state, press the power switch for less than 4 seconds (default) and
full operation is restored.
The OS may provide additional programming features to change the activation time for each state, and to
shutdown or transition the ReadyBoard 800 at certain times, depending on the way the OS interface is
programmed. Refer to the OS vender's documentation for power management under the ACPI standard.
NOTE
Some operating systems use the keyboard, mouse, Wake-on-Ring
(serial port), and Wake-on-LAN (Ethernet port) as an activity to wake
up the system from a sleep state. However, the ReadyBoard 800 only
supports the Power On switch as a wake up activity.
56
Reference Manual
Hardware
ReadyBoard 800
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