Device Power States - Intermec CK30 Service Manual

Chapter 4 — Theory of Operation
Resuming
Increasing power
consumption of
static states.
System Power States and Transitions

Device Power States

56
I/O key OR
main battery low
Resume
succeeded
Normal
Suspending
Suspend
successful
Main batt OK
AND
(I/O key OR
peripheral
resume
interrupt)
Power is switched to various parts of the design as indicated in the
following table. Some sections can be optionally left powered during
Suspend to support user-selected features like 802.11 WakeOnLAN,
Bluetooth wake-on-connect, or tethered scanner trigger resume.
See individual specs for devices in this table that may support power states
unique to that device (see "Supported Bus States" on page 73 for Mini
PCI slot supported power states).
Treatment of a device during a critical shutdown falls into two categories
shown in the Critical Shutdown Type column. See Device Power Control
on the next page for more detail.
Running
I/O key
down
main
5 sec
battery
critically
low OR
removed
warm
boot
done
Suspend
Warm-booting
failed
Suspending,
Suspend
HCRs off
failed
Suspend
successful
I/O key down
5 seconds
AND
Main
batt
OK
Reset switch
pressed
AND
Suspended
Main batt OK
Main batt
dead AND
New Main batt
supercap
installed
dead
Dead
= Static States
CK30 Handheld Computer Service Manual
Soft
cold
boot
command
main
cold
batt
boot
out
done
Cold-booting
Reset
switch
I/O key down
pressed
5 seconds
Limbo
Main batt
dead AND
supercap
dead
= Transitional States