Intel® Server Boards SE7320SP2 and SE7525GP2
Platform Management
Revision 4.0
113
the system crash state can use the
Get NMI Source
command to determine and save the cause
of the NMI.
5.2.13 SMI
Generation
The mBMC can generate an SMI due to watchdog timer pre-timeout expiration with SMI pre-
timeout interrupt specified. The SMI generation is software configurable. The above conditions
may or may not be enabled to cause an SMI.
5.3 Platform Management Interconnects
5.3.1
Power Supply Interface Signals
The mBMC supports two power supply control signals:
Power On
and
Power Good
. The
Power
On
signal connects to the chassis power subsystem and is used to request power state
changes (asserted = request
Power On
). The
Power Good
signal from the chassis power
subsystem indicates current the power state (asserted = power is on).
Figure 17 shows the power supply control signals and their sources. To turn the system on, the
mBMC asserts the
Power On
signal and waits for the
Power Good
signal to assert in response,
indicating that DC power is on.
mBMC
Power Sub System
Pow er G ood
Power ON
Figure 17. Power Supply Control Signals
The mBMC uses the
Power Good
signal to monitor whether the power supply is on and
operational, and to confirm whether the actual system power state matches the intended system
on/off power state that was commanded with the
Power On
signal.
De-assertion of the
Power Good
signal generates an interrupt that the mBMC uses to detect
either power subsystem failure or loss of AC power. If AC power is suddenly lost, the mBMC:
Immediately asserts system reset
Powers down the system
Waits for configured system off time (depending on configuration)
Attempts to power the system on (depending on configuration)
Содержание SE7320SP2 - 800MHZ Ecc Ddr Xeon
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