• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Subscribers 33 subscribers
  • Views 215 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.

AWR2243BOOST: SYNC_IN connection to GPIO on the Rev.B board

Tomonori Masuno
Prodigy 10 points
Part Number: AWR2243BOOST
Other Parts Discussed in Thread: DCA1000EVM, AWR2243

Dear Experts, 

We have both revisions (Rev.A and Rev.B) of the AWR2243BOOST board  + DCA1000EVM and we are considering synchronizing each with an RGB camera that is as external HW trigger. 

Even though both boards are set to the same switch settings and the same firmware, only the Rev. B board cannot be externally synchronized.

In the documentation spruit8d.pdf I noticed that for Rev.B the SYNC_IN signal connection to the J6 connector but I don't know which pin is connected to the SYNC_IN signal. 

I would appreciate if you could tell me. 

Best Regards,

Tomonori Masuno 

  • 0
    TI__Mastermind 21485 points

    Hi Masuno-san,

    The pin will be N10. You can also find this information in the design zip files of AWR2243 in the schematic pdf. 

    Thanks,

    Pradipta.

  • 0 in reply to Pradipta Bandyopadhyay
    Prodigy 10 points

    Hello Bandyopadhyay-san, thank you for your response. 

    I understand that the SYNC_IN signal is coming from N10. Thank you very much. But I just want to know how to put an external trigger into this, the easy way.

    On the Rev. A board, there is a connection to SYNC_IN at pin 9 of the BP/LP connector (J5) and I connected the external trigger via cable and it worked.

    On Rev. B it did not work, and on p. 25 of the Spruit8d.pdf, the Design Revision History for Rev.B says "Enabled, by default, the SYNC_IN signal connection to the J6 connector". I can't figure out which pin of the J6 connector it is.

    I asked because I thought that if I knew that, I could trigger externally through the cable as I did with Rev.A.

    Best Regards,

    Tomonori Masuno

  • 0 in reply to Tomonori Masuno
    TI__Mastermind 23855 points

    Hello,

    It looks like there is an error in the users guide. The only change to RevB was capacitor C56 was updated from 220nF to 47nF.

    https://www.ti.com/tool/AWR2243BOOST#design-files

    The use of SYNC_IN pin should be identical on both RevA and RevB. Does the RevB board work as expected otherwise? Can you probe on resistor R196 and confirm if you can see the trigger at this point to make sure the trigger is reaching the device?

    regards,

    Adrian

  • 0 in reply to aozer
    Prodigy 10 points

    Dear Adrian-san, all, 

    Thank you for your advice. 

    Indeed I checked the trigger then I found that the trigger pulse voltage is too low, we only have 1V peek to peek, so it sometimes worked by chance. 

    Best Regards,

    Tomonori Masuno