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Original question:

AM2431: SIL2 in the use case of only R5F is used

AM2431: Is SIL2 certification valid in the case of even only R5F core is used without Safety Island ?

Hideaki Matsumoto
Genius 9070 points
Part Number: AM2431

Tool/software:

Hi,

As it seems that the following thread was locked, let me ask the same question here.

https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1438003/am2431-sil2-in-the-use-case-of-only-r5f-is-used

AM243x got SIL2 certification.
https://www.ti.com/jp/lit/pdf/sffs846

Is that assumed to use some of diagnostic function in the safety island (MCU Island) ?
Or it doesn’t depend on the use of the features in the safety island ?

For example, is SIL2 certification valid in the case of even only R5F core is used without Safety Island ?

The customer has to explain the above for getting the certification of their system with AM2431.

Please provide your comment. It would be appreciated if we can receive it as soon as possible.

Thanks and regards,
Hideaki

  • 0
    TI__Mastermind 20256 points

    Hello Hideaki-san,

    Hideaki Matsumoto said:
    Is that assumed to use some of diagnostic function in the safety island (MCU Island) ?
    Or it doesn’t depend on the use of the features in the safety island ?

    Safety Island is just an additional feature available on AM243x. It is not necessary to use the safety island feature to achieve SIL2 safety level.

    Hideaki Matsumoto said:
    For example, is SIL2 certification valid in the case of even only R5F core is used without Safety Island ?

    Yes, it should be possible. If they implement the necessary safety diagnostics from the safety manual, their system should be able to achieve SIL2 safety level even without utilising the MCU core.

    Regards,

    Nihar Potturu. 

  • 0 in reply to Nihar Potturu
    TI__Genius 9070 points

    Hi Nihar,

    Thank you so much for your answer. That’s really helpful. Let me confirm a little more.

    Nihar Potturu said:
    Yes, it should be possible. If they implement the necessary safety diagnostics from the safety manual, their system should be able to achieve SIL2 safety level even without utilising the MCU core.

    All POK modules which monitor the voltage levels on each power rail are in MCU domain.

    Is SIL2 certification which TI obtained valid in the case of even not using these POK modules ?

     

    Thanks and regards,

    Hideaki

  • 0 in reply to Hideaki Matsumoto
    TI__Genius 9070 points

    Hi Nihar,

    Could I receive any response to my inquiry above ?

    Thanks and regards,
    Hideaki