• State
  • Locked Locked
  • Replies 3 replies
  • Subscribers 31 subscribers
  • Views 747 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.

TDC7200: Start pulse is unable to detect

TEMC
Intellectual 955 points
Part Number: TDC7200
Other Parts Discussed in Thread: TDC1000

trigger is generating from TDC7200 and start pulse is generated from TDC1000 .start is appearing on pin of TDC7200 but in register (interupt status) start pulse detect bit is unable to set.

  • 0
    TI__Mastermind 31655 points
    Hello,

    Are these devices being used together as part of the TDC1000-TDC7200EVM, or is this on a custom board? Also, how are you determining that the measurement started flag has not been set? It's not recommended to poll the INT_STATUS register while the measurement is in progress as this can cause issues with the measurement. The trigger pulse should be reset when the TD7200 receives a START signal, so that is one way you can check without polling the INT_STATUS register.

    What happens in your application after the measurement is started but no flag is set?

    Regards,
  • 0 in reply to Scott Cummins
    Intellectual 955 points
    hi Scott,
    we are using custom board,no interput is generating at INTB pin,so we verfiying the interupt status we found no change in interupt status (start detect)bit ,trigger is high when writing into register and low after some time.
  • 0 in reply to TEMC
    Intellectual 955 points
    hi scott
    trigger pulse wave is good as shown in datasheet.pleas help.