• State TI Thinks Resolved
  • Locked Locked
  • Replies 4 replies
  • Answers 1 answer
  • Subscribers 30 subscribers
  • Views 159 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.

MMWCAS-RF-EVM: Is there a way to read/probe the sync status of the trasnceiver chips?

Asher Farooqui
Expert 1821 points
Part Number: MMWCAS-RF-EVM

Hi, 
According to this app note, the master generates the 20 GHz RF sync and distributes it amongst the slaves. I wanted to know if there is a way we can probe(or read a register/flag) that the system is synced in RF? 

  • 0
    TI__Guru*** 148594 points

    Due to local holidays please allow us to get back to you early next week

     

    Thank you

    Cesar

  • 0
    TI__Guru 58035 points

    Hello Asher,

    There is no register as such that provides a status. In case the 20Ghz is not reaching the slave devices (due to some fault) , this will impact the Tx o/p and Rx gain of the slave devices. So using the TX o/p monitor and RX gain monitor you can verify that the TX o/p and Rx gain is around the expected range.

    If there is a systematic delay mismatch on the 20Ghz line to all the devices, this would show up as phase mismatch between the different channels of the devices.

    Regards,

    Vivek 

  • 0 in reply to Vivek Dham
    Expert 1821 points

    Thank you for the answer, Vivek. 
    We can monitor that for the whole system. We're doing a custom design and were looking for data that we can monitor for RF bring-up. Would you have any recommendations for that?

  • 0 in reply to Asher Farooqui
    TI__Guru 58035 points

    Hello Asher,

    I think the easiest way would be look at the phase mismatch between the channels. There is no easy way to measure the mismatch from within the device.

    Regards,

    Vivek