Intel® Server Board S2600CO Family TPS Platform Management Functional Overview
Revision 1.4 55
Intel order number G42278-004
o BMC System Management Health Monitoring
6.2 Advanced Configuration and Power Interface (ACPI)
The server board has support for the following ACPI states:
Table 15. ACPI Power States
State Supported Description
S0 Yes Working.
The front panel power LED is on (not controlled by the BMC).
The fans spin at the normal speed, as determined by sensor inputs.
Front panel buttons work normally.
S1 Yes Sleeping. Hardware context is maintained; equates to processor and chipset clocks being
stopped.
The front panel power LED blinks at a rate of 1 Hz with a 50% duty cycle (not controlled
by the BMC).
The watchdog timer is stopped.
The power, reset, front panel NMI, and ID buttons are unprotected.
Fan speed control is determined by available SDRs. Fans may be set to a fixed state, or
basic fan management can be applied.
The BMC detects that the system has exited the ACPI S1 sleep state when the BIOS SMI
handler notifies it.
S2 No Not supported.
S3 No Not supported.
S4 No
Not supported.
S5 Yes Soft off.
The front panel buttons are not locked.
The fans are stopped.
The power-up process goes through the normal boot process.
The power, reset, front panel NMI, and ID buttons are unlocked.
6.3 Power Control Sources
The server board supports several power control sources which can initiate a power-up or
power-down activity.
Table 16. Power Control Initiators
Source External Signal Name or Internal
Subsystem
Capabilities
Power Button Front Panel power button
Turns power on or off
BMC watchdog timer Internal BMC timer Turns power off, or power cycle
Command Routed through command processor Turns power on or off, or power cycle
Power state retention Implemented by means of BMC
internal logic
Turns power on when AC power returns
Chipset Sleep S4/S5 signal (same as
POWER_ON)
Turns power on or off
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