NMI (Non-maskable Interrupts) nets definition and how it works on server

[Enshuo]

Hi experts,
I study an NMI (Non-maskable Interrupts) function, but I don't know how it works detailedly. Please advise me on how and what the nets BMC_CPU0_NMI_CTL_N (BMC to CPU)、CPU0_BMC_NMI_ACTIVE_N (CPU to BMC) mean below.

I assume a server system crashes. Then, press NMI button. BMC sends a control signal to CPU, so it's called CTL? CPU sends a command to BMC to save a memory dump, so it's called ACTIVE (Intel calls EVENT?)? Is it right?

 

[KlausST]

Hi,

Please be so kind and give some hint about what controller you talk about.
There are many thousands...

And please additionally gove some context.

Klaus

 

[Enshuo]

Hi,

Please be so kind and give some hint about what controller you talk about.
There are many thousands...

And please additionally gove some context.

Klaus

Thanks for your reply. Found an example. It's from PCH (C62X series) to BMC (AST2500). Please advise the function of ACTIVE or EVENT.