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AM3359: Impact of CLK_M_OSC clock stopping

Daisuke Maeda
Guru 20205 points
Part Number: AM3359

Tool/software:

Our customer wants to know an impact when CLK_M_OSC clock stops due to an oscillator failure or other reason, and also wants to know how to safely reduce the impact.

If the CLK_M_OSC clock stops, what is an impact?

When the CLK_M_OSC clock stops, do internal modules stop and do output pins hold last output state or are they in an indeterminate state?

CLK_RC32K clock is used for built-in Watchdog Timer.

Does the built-in Watchdog Timer continue to operate normally even after the CLK_M_OSC clock stops? Does Watchdog reset still work?

Best regards,

Daisuke

  • 0
    Guru 20205 points

    Dear TI support team,

    Thank you for your daily support. Our customer is waiting for your reply.

    If the CLK_M_OSC clock stops, should the AM335x be reset by an external circuit and then immediately powered off including all peripheral devices and circuits?

    Please give me an answer as soon as possible. Your prompt reply would be appreciated.

    Best regards,

    Daisuke

  • 0 in reply to Daisuke Maeda
    TI__Mastermind 20477 points

    Hello Daisuke,

    Apologies for the delay, we are looking into the query, please expect a response early next week.

    Thanks,
    Krithika

  • 0 in reply to Krithika Ravi
    Guru 20205 points

    Hi Krithika-san,

    Thank you for your reply.

    If the AM335x does not have any protection features against the CLK_M_OSC clock stopping, our customer will implement countermeasures using external circuit.

    Best regards,

    Daisuke