3
Hardware Reference
34
ACPI wake up
CE915GM modules support these wake-up events from S3, S4, and S5 sleep states:
•
Power button
•
RTC alarm. The ACPI wake-up time is configured in the BIOS setup utility,
Configuration, Power Control Configuration menu.
•
Onboard LAN. To wake on LAN, make sure that the embedded Ethernet is enabled in
the BIOS setup utility and the Ethernet connection is available.
Note:
To enable ACPI wake-up from these sleep states, press F2 to enter the BIOS setup
utility during system boot, and then set PME Wake from S5 to Enabled on the
Configuration > Power Control Configuration menu.
BIOS operation mode configuration
CE915GM modules provide a 1x4-pin BIOS operation mode header to force a particular
mode of BIOS operation. For header location, see
Figure 2 on page 11
. Pin 1 is marked
with an asterisk (*).
•
BIOS recovery mode: Pins 2 and 3 jumpered. The system does not boot — it waits until
a valid BIOS recovery diskette is detected, then copies the new BIOS into ROM. After
this completes, remove the jumper and then reboot the system.
•
Clear CMOS mode: Pins 3 and 4 jumpered. In this mode, the CMOS RAM contents are
ignored and the factory defaults are used to configure the system.
Table 5. Supported ACPI states for 12V product options
Description
VCC state
Supported ACPI states
5V_SBY
12V
G0/S0
1
1
G0/S0 — Fully operational; working
G1/S3
2
2
G1/S3 — Standby (Suspend to RAM). Main memory is still powered. This state allows the
resumption of work exactly where it was left at the start of standby.
G1/S4
3
3
G1/S4 — Non-volatile sleep (Suspend to disk). System context is saved to disk and power
removed from all circuits except those required to resume.
G2/S5
4
4
G2/S5 — Soft off. All devices are un-powered. Memory contents and context are lost.
G3
5
5
G3 — Mechanical off. System is un-powered with no standby rails. No wake-up is possible.
Power off
Off
Off
–
–
–
–
ü
Carrier board with no standby support
Off
On
ü
*
*
*
–
Standby
On
Off
–
ü
ü
*
–
Full power
On
On
ü
*
*
*
–
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from