Teknor Industrial Computers PCI-993, Technical Reference Manual, Page: 123 / 204

Power Management 14-1
14 POWER MANAGEMENT
14.01 POWER MANAGEMENT MODES
The TEK933 supports a very flexible and powerful power management scheme. The
System Controller provides progressively higher levels of power conservation
whenever the system is idle through the following special power saving modes: Sleep
Mode and Suspend Mode. These modes are fully programmable through the
AMIBIOS Setup Program (see Section 15). In general, each progressive level of power
management is entered when inactivity is detected by the System Controller which
monitors activity from the Keyboard, Video, Serial and Parallel I/O, and the Hard and
Floppy Drives. The timeouts which are used to enter into Sleep Mode and then
Suspend Mode are programmable via the AMIBIOS Power Management Setup Screen.
Each mode is described below.
14.01.1 SLEEP MODE
The Sleep Mode is the System Controller’s first level of power conservation. In this
mode, some clocks may be reduced in frequency or stopped.
14.01.2 SUSPEND MODE
The Suspend Mode is the System Controller’s second level of power conservation. In
this mode, a special BIOS routine is invoked to save the current state of the system for
complete restoration at some later time. Most of the system components and
peripherals can be shut down for optimum power conservation.