• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 15 subscribers
  • Views 137 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ISO1050: Abnormal CAN_H-CAN_L

CIMING HONG
Prodigy 20 points
Part Number: ISO1050

Hello, TI friends:

I have a question when ISO1050 with interconnection.

During ISO1050 communication, CAN_H-CAN_L is normally 3.5V-1.2V as datasheet listed.

Randomly, I could capture higher/lower CAN_H/L waveform (orange section) and don't know how to explain.

Would you be able to help me, thanks.

  • +1
    TI__Expert 3482 points

    Hi CIMING HONG.

    Thank you for reaching out to us!

    Towards the end of packet, ACK is acknowledgment bit which is driven dominant by all nodes which correctly receive the packet. So when multiple nodes on bus drive dominant at the same time, the differential voltage is higher in amplitude as opposed to other bits which are just driven by master transmitter node.

    Please look at this application report, question 14 for more details.

    Regards,

    Alfred