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AM3352: DCAN0_TX&DCAN1_TX signal is abnormally low level when bootup or ifconfig down

ryan
Prodigy 40 points
Part Number: AM3352

 

Hi Support Team,

In idle state, DCAN0/1_TX should be high level normally.But the DCAN0/1_TX is low level when ifconfig can0 down.

  • 0
    Prodigy 40 points

    The CAN0_TX waveform is as bellow.

    ...

  • 0 in reply to ryan
    TI__Mastermind 40130 points

    Hi ,

    I am not seeing the waveform. Please attach.

    Best Regards,

    Schuyler

  • 0 in reply to Schuyler Patton
    Prodigy 40 points

    Hi Schuyler,

    I don't know why I can't upload the attachment.

    The waveform like as bellow.when uboot and device is down, the io state looks like input.

                                  ------kernel boot 3.3V---------------                                         -----ifconfig can0 up -----------------                               

                                  |                                                  |                                          |

    ---uboot-～0.3V-----                                                   ------ifconfig can0 down-----

    Best Regards