FIC M296 - Manual (Page 69)

Software Functional Overview
The CPU clock is slow down and all other devices are full-on.
z
Stand by mode
A suspend state where all motherboard components are still powered-on except for the
system clock generator device. The PCI and CPU buses are driven to the inactive idle state.
The system memory is powered and refreshed by the memory bridge, and the graphics frame
buffer is powered and refreshed by the graphic chip. The system provides a 32Khz clock
(SUSCLK) in this suspend mode to support refresh of these memory subsystems. Only an
enabled “resume event” can bring the system out of the stand by state. The SIS 961 also
provides a resume timer that allows the system to resume after a programmed time has
elapsed.
z
Suspend to RAM mode (STR)
A suspend state where all motherboard components are powered-off. The CPU/L2 and
PCI busses are powered off. All devices connected to the CPU/L2 and PCI busses must either
be powered-off or isolate their bus interfaces. The system memory is powered and refreshed
by the memory bridge, and the graphics frame buffer is powered and refreshed by the
graphics chip. The system provides a 32 kHz clock (SUSCLK) in this suspend mode to
support refresh of these memory subsystems. Only an enabled “resume event” can bring the
platform out of the suspend to RAM (STR) state.
z
Suspend to Disk mode (STD)
A suspend state where the context of the entire system is saved to disk, all motherboard
components are powered-off, and all clocks are stopped. Any enabled “resume event”, such as
PowerBTN or RTC, can bring the platform out of the suspend to disk (STD) state.
z
Soft off mode (SOFF)
The This is the same as suspend to disk except the context of memory is not saved. The system
will resume from Soft Off as if a hard reset had occurred.
z
Mechanical off mode
All power except the RTC has been removed from the system.
FIC M295 / M296 Service Manual
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