• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 33 subscribers
  • Views 233 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

TCAN1145-Q1: CANINT bit and INT_1 register

Scarlett Cao
Expert 4030 points
Part Number: TCAN1145-Q1

Hi team,

Customer is using CANoe to send CAN NM message every 40ms, and read CANINT bit through SPI every 5ms, they found the bit is never set. So they have below questions:

1. Will CANINT bit set any time (no matter STANBY or NORMAL state) when receiving CAN NM message?

2. If receive the command to clear CANINT bit, how long will it take? How long CANINT can be re-assert?

3. Is there any interval requirement of SPI read/write INT_1 register?

Thank you

Scarlett

  • 0
    TI__Guru 74292 points

    Scarlett,

    The CANINT bit only gets set when a CAN bus wakeup is detected by the CAN transceiver, and will stay high until it is cleared by writing a 1 to the bit. It does no self-clear. The instant another CAN bus wakeup is detected, the bit will get reset.

    Regards,

    Eric Hackett