• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 82 subscribers
  • Views 875 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.

TMS320F280049: Missing clock detection

Linda Zhang84708
Expert 6860 points
Part Number: TMS320F280049


Hello Champs,

For F280049 missing clock detection, there is chapter 2.7.7 in TRM to describe the details.

Would you please kindly help below questions?

1) Is it like F2802x/3x/06x that reset will be triggered when missing clock is detected?

2) Is there also "limp mode" in F280049 which is similar with F2802x/03x/06x?

3) If missing clock still exists after setting the MCDCLR bit, would repeated reset occur?

Thanks!

Best Regards,

Linda

  • 0
    TI__Guru** 116021 points

    Hi Linda,

     1) Is it like F2802x/3x/06x that reset will be triggered when missing clock is detected?

    No, it is like 07x where missing clock will generate NMI

     2) Is there also "limp mode" in F280049 which is similar with F2802x/03x/06x?

    No, there is no limp mode. In case of missing clock, clock source is changed to INTOSC1 in hardware.

     3) If missing clock still exists after setting the MCDCLR bit, would repeated reset occur?

    If NMI is not serviced then NMIWD will reset the device and device will BOOT again and if there is still missing clock then it'll go through same sequence again.

    Regards,

    Vivek Singh

  • 0 in reply to Vivek Singh
    TI__Expert 6860 points
    Hello Vivek,

    Thank you. It's very clear.

    Best Regards,
    Linda