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TCAN4550-Q1: Question about the diagnostic mechanism

Oliver Tang
Genius 9745 points
Part Number: TCAN4550-Q1
Other Parts Discussed in Thread: TCAN4550

Hi Team,

Do we have registers to record issues below?

1)CANH short to ground

2)CANH short to VCC

3)CANL short to ground

4)CANH short to VCC

5)CANH short to CANL

6)CANH open

7)CANL open

BR,

Oliver Tang

  • +1
    TI__Mastermind 19360 points

    Hi Oliver,

    Unfortunately the TCAN4550 does not have register status bits that would indicate those events.  The closest register bits that would indicate a potential short or open fault condition on the CAN bus are the CANDOM (CAN stuck dominant), CANSLNT (CAN silent), and CANERR (CAN error which is the logical OR of CANDOM and CANSLNT).

    Regards,

    Jonathan