SE7210TP1-E Datasheet, PDF (103/145 Pages) Intel Corporation – Intel® Server Board Technical Product Specification

Intel® Server Board SE7210TP1-E TPS
Platform Management Architecture
controller will not generate another NMI until the system has been reset or powered down,
however, enabling NMI via an NMI Enable/Disable command will re-arm the NMI.
The National Semiconductor PC87431 integrated management controller captures the NMI
source(s) and makes that information available via a Get NMI Source command. Reading the
NMI source information causes it to be cleared. A second Set NMI Source command can be
used by other agents, such as the BIOS SMI Handler, to register NMI sources when they detect
NMI generating errors. Operating system NMI handlers that save the system crash state can
use the Get NMI Source command to determine and save the cause of the NMI.
5.1.14
SMI Generation
The National Semiconductor PC87431 integrated management controller 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.
5.2 Platform Management Interconnects
5.2.1
Power Supply Interface Signals
The National Semiconductor PC87431 integrated management controller 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 13 shows the power supply control signals and their sources. To turn the system on, the
National Semiconductor PC87431 integrated management controller asserts the Power On
signal and waits for the Power Good signal to assert in response, indicating that DC power is
on.
mBMC
Power Good
Power ON
Power Sub System
Figure 13: Power Supply Control Signals
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