For our use case, we have used SW warm reset in our FW.  We consider to use an external reset pin to be equivalent to the warm reset that is issued by SOC_generateSwWarmResetMcuDomain(). Is there an equivalent reset pin for this SW warm reset?   In our use case, MCU is not in isolated state, is the MAIN_RESETz_REQ the equivalent pin for SW warm reset? 

Thanks,
Hong 

I found some answers from TRM, it mentioned MCU_RESETz is equivalent to the SW_MCU_WARMRST (the one we currently used).   Does TI know any concerns about this pin of MCU_RESETz being used in our new design?  

Is there any Erra about this pin? 

While we still like to know the difference between MCU_RESET, SW_MCU_WARMRST and PoR reset, as asked originally in the subject. 

Hi Hong,

Sorry for the delayed response on this. Yes as you rightly said SW_MCU_WARMRSTz Reset is equivalent to MCU_RESETz HW Pin with only difference being one is sync (SW reset) and another one is async (HW Reset).

Please See:

1)  Table 5-979. Device Reset Sources

2)  5.3.5.2.5 SW_MCU_WARMRSTz Reset in TRM (SPRUIM2H – MAY 2020 – REVISED OCTOBER 2023)

Also

Please refer to https://www.ti.com/lit/er/sprz457h/sprz457h.pdf for all the errata applicable to AM243x devices.

Best Regards, Shiv

Hi Hong,

Does above answer clarify or do you need further clarification. Please let us know.

Best Regards, Shiv

Thanks a lot, Shiv.

This did answer the questions. 

Thanks,

Hong 

Thanks for confirmation Hong. I will close the thread.

Best Regards, Shiv