SBC MC39907 Reset Status Registers

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SBC MC39907 Reset Status Registers

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ahmedsoubky
Contributor II

Hi, 

A couple of questions about two SBC registers in the RM: 

Unbenannt.PNG

Unbenannt.PNG

What is the meaning of RSTb_ext and RSTb and the difference between them as they are always set to 1 whatever the reset reason is ( microcontroller or SBC ) ? 

Also, is it possible to know that an SPI reset request was the reason for an SBC reset ? 

Thanks in advance, 

Best Regards, 

Ahmed 

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petervlna
NXP TechSupport
NXP TechSupport

Hi,

WD_answer register implements RSTb which indicated reset cause by WD.

Diag_FS1 - RSTb_ext Report an external reset cause by device external to SBC. For example cased by MCU.

Could you point me to SPI reset request in Datasheet?

Peter

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