Справочник Пользователя для Intel SE7520JR2

Revision 1.0 

The sources listed in the following table can initiate power-up and/or power-down activity. 

Power button 

Front control power button 

Turns power on or off  

mBMC Watchdog Timer 

Internal mBMC timer 

Turns power off or power cycle 

Platform Event Filtering 

PEF 

Turns power off or power cycle 

Command 

Routed through command processor 

Turns power on or off, or power cycle 

Power state retention 

Implemented via mBMC internal logic 

Turns power on when AC power returns 

 

When turning on the system power after one of the event occurrences, the mBMC executes the 
following procedure: 

1.  The mBMC asserts Power Supply (PS) Power On via the chipset and waits for the 

power subsystem to assert Power Good. The system is reset. 

2.  The mBMC initializes all sensors to their Power On initialization states. The Init 

Agent is run. 

3.  The mBMC attempts to boot the system by running the FRB algorithm, if FRB is 

enabled.  

To power down the system, the mBMC effectively performs the sequence of power-up steps in 
reverse order. It occur as follows: 

1.  The mBMC asserts system reset. 

2.  The mBMC de-asserts the Power On signal via the chipset. 

3.  The power subsystem turns off system power upon de-assertion of the Power On 

signal. 

The mBMC asserts the System Reset signal on the baseboard to perform a system reset. The 
mBMC asserts the System Reset signal before powering the system up. After power is stable as 
indicated by the power subsystem Power Good signal, the mBMC sets the processor enable 
state as appropriate and de-asserts the System Reset signal, taking the system out of reset. 
The system reset signal responds to the control panel or IPMI commands.