• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 33 subscribers
  • Views 88 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.

TCAN1465-Q1: Interface - INTERNAL forum

NOBUO FUJIHARA
Genius 9345 points
Part Number: TCAN1465-Q1

Tool/software:

Hi team, 

I received questions from my customer regarding CANINT and device behavior.

Could you support below questions?

Q1) Customer asks if CANINT would be set by (a) to (c) cases.

Are below statements for each cases correct?

  (a) When device is in Standby mode(SW_EN=0), CANINT can be set If device receives WUP

  (b) When device is in Normal mode(SW_EN=0), CANINT can is set if device receives WUP

  (c) When device is in Sleep mode(SW_EN=1), CABUBT can be set if device receives WUF.

 

Q2) Assuming CANINT being set due to the causes shown in above (a) to (c).  

After MCU clearing by writing CANINT=1b, is there any chance that CANINT=1b being set again?

In other word, Is it correct understanding that CANINT would be set if device detects WUP or WUF even after MCU clear CANINT?

 

Q3)

Step1: Device sets CANINT in normal mode due to possible cause

Step2: Device shifts to Sleep mode from Normal mode without clearing CANINT

 After step2, will device automatically shift to Standby mode without receiving WUP/WUF?

Best regards,

  • +1
    TI__Mastermind 27980 points

    Hi FUJIHARA-san

    NOBUO FUJIHARA said:
      (a) When device is in Standby mode(SW_EN=0), CANINT can be set If device receives WUP

    True

    NOBUO FUJIHARA said:
      (b) When device is in Normal mode(SW_EN=0), CANINT can is set if device receives WUP

    False, CANINT only set in sleep and standby mode

    NOBUO FUJIHARA said:
      (c) When device is in Sleep mode(SW_EN=1), CABUBT can be set if device receives WUF.

    True

    NOBUO FUJIHARA said:
    In other word, Is it correct understanding that CANINT would be set if device detects WUP or WUF even after MCU clear CANINT?

    Yes CANINT will set again

    NOBUO FUJIHARA said:
     After step2, will device automatically shift to Standby mode without receiving WUP/WUF?

    No it won't. CANINT can't set in normal mode

    Regards,

    Sean

  • 0 in reply to Sean Guo
    TI__Genius 9345 points

    Hi Sean-san,

    Thank you so much for prompt support.

    Best regards,

  • 0 in reply to NOBUO FUJIHARA
    TI__Mastermind 27980 points

    Fujihara-san,

    I want to make a complement to an answer above.

    NOBUO FUJIHARA said:

    Q3)

    Step1: Device sets CANINT in normal mode due to possible cause

    Step2: Device shifts to Sleep mode from Normal mode without clearing CANINT

     After step2, will device automatically shift to Standby mode without receiving WUP/WUF?

    So it is still possible for CANINT set in normal mode. If SW_EN =1 and there is a matched WUF on the bus, CANINT will set in this case.

    Normally, you should turn off selective wakeup in normal mode. So it is not expected to see CANINT set in normal mode.

    Anyway, after step 2, the device will not automatically shift to standby mode.  

    Regards,

    Sean