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AWR1843: How to check the MCAN is bus idle

Wesley He
Expert 6205 points
Part Number: AWR1843

Hi team,

As customer are using CANFD sleep feature, so they want to confirm the MCAN bus is idle, the goes to sleep.

Can you please let me know which register can be used to check the CAN bus is idle?

Thanks.

Regards,

Wesley

  • 0
    TI__Guru*** 148594 points

    Hi

    After 10 consecutive recessive bits the CAN bus is considered idle

    Please see the AWR1843 TRM, section 23.1.2.4.1 Bus_Idle state

    "After waiting for the occurrence of a sequence of 11 consecutive recessive bits (indication for Bus_Idle state).."

    Thank you
    Cesar