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AM625: MAIN, MCU and WKUP Domain Communication Interfaces of AM6252

Utku Uygun
Prodigy 155 points
Part Number: AM625
Other Parts Discussed in Thread: AM4378

Hi,

We are switching our custom board design with AM4378 to AM6252 SoC. We used to have just MAIN domain with AM4378. However AM62xx series comes with 3 different domains (MAIN, MCU and WKUP). What are the use case differences between MAIN, MCU and WKUP domains? What kind of differences may occur using the communication interfaces of these different domains. Such as, which UART interface should I use for debugging purpose? I need an extra UART interface besides the MAIN UARTs , should I use MCU UART or WKUP UART? Also, the same applies for the SPI interace.

Thanks,

Best Regards.

  • +1
    TI__Guru*** 134956 points

    Hi Utku,

    The MCU domain is mainly for safety applications, in which the MCU domain could enable reset isolation from the MAIN domain, The WKUP is always on even when the MAIN domain is powered off during low power mode.

    If the MCU domain doesn't run safety applications, MCU reset isolation won't be enabled, then the MAIN domain can use the MCU domain peripherals, such as the MCU UART.