28 User's Manual
Chapter
4
Power Management
Power Management Modes Description
541 mainboard provides four power management modes for reduc-
ing power consumption :
Full-on
,
(Doze), Standby
, and
Suspend
.
541 mainboard provide EPMI connector to enhanced power man-
agement.
Full-on mode.
The
Full-on
mode is the normal operating mode of
the PC system. In this mode, the Standby timer starts counting if no
activity is taking place, when the programmable time-out period has
expired, the system will enter to Standby mode. The types of activity
monitored include IRQ3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 ,14, and 15.
DOZE mode.
CPU and system reduce to half of normal frequency.
In this mode, the
STANDBY
timer starts counting if no activity is
taking place. The activities monitored are the same as in
Full-on
mode.(
Note :
AMI BIOS doesn't support this mode)
STANDBY mode.
CPU and system reduce to a lower frequency. In
this mode, the
SUSPEND
timer starts counting if no activity is taking
place. The activities monitored are the same as in
Full-on
mode.
SUSPEND mode.
In this mode, if S-Series CPU is present, 541
mainboard will stop the CPU clock (0MHz), slow down the system
clock, power down the secondary cache. The activities monitored
are the same as in
Full-on
mode.
