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SN65HVD1050: CAN issue

Chen Yang
Intellectual 2770 points
Part Number: SN65HVD1050

Hi team,

My customer met CAN issue w/ SN65HVD1050 and F280039C MCAN.

The CAN of the host computer is often automatically disconnected, and then needs to be restarted to connect, and then disconnected after a while.
Below is our schematic CANTXB/CANRXB is directly connected to the DSP pins.

Would you please help to review the sch? thanks 

  • 0
    TI__Guru 74322 points

    Chen,

    The schematic doesn't indicate any reason that CAN communication would be working based on the transceiver. Can you share waveforms of CANH, CANL, TXD, and RXD? If the host computer is automatically disabled, it may be going into BUS OFF mode because of CAN bus errors. Is it also possible to check in the CAN controller if errors are being reported, and if so, which errors are being reported?

    Regards,

    Eric Hackett