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TCAN1044V-Q1: How can we know whether the quality of PCB CANFD is ok by measuring the signal?

Kygo Cheng
Expert 6830 points

Part Number: TCAN1044V-Q1

Hi Team,

There is a good new that we DIN TCAN1044VDRBRQ1!

At present, customers need to confirm whether the signal quality of PCB CANFD 8Mbps case is ok?
We would like to ask how can we know whether the quality is ok by measuring the signal?

Regarding the Vdiff at 8Mbps (Vdiff between CANH/CANL at the time of dominant), how long will it take? THX

  • 0
    TI__Guru 53555 points

    Hi Kygo, 

    There are a multitude of ways to verify signal integrity in a system. Most customers and OEMs have their own tests that qualify the system and pass it off for production. Do you know if there are any existing tests that this customer might leverage to evaluate this new design?

    For evaluation of performance on a basic level looking at the CAN waveforms, the datasheet specifications such as propagation delay and loop time can be measured. Measuring both CANH and CANL independently would give a good view on how much ringing exists on the network and allow for differential calculations for signal evaluation. Finally, the TXD and RXD lines may be monitored to catch any glitches that may enter the system and evaluate if they would impact communications in a typical application of the design. 

    Let me know if you have any more questions.

    Regards,
    Eric Schott