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AWR1243: Selecting 20GHz sync source in mmwavelink

Fabian Schwartau
Intellectual 270 points
Part Number: AWR1243
Other Parts Discussed in Thread: MMWAVE-DFP

Hi everyone,

according to some documents I got from TI, it is possible to configure some muxes for the 20 GHz sync signal on AWR1243. Where can I do that in mmwavelink?

We are trying to sync two AWR1243 where the 20GHz output of the master is splitted and connected to its own input and the input of the slave. It seems that the master does not require the ramp input as it also works when we disconnect it. It also seems like the slave does not get the signal as there is no usefull data captured, no matter if the 20 GHz signal is connected or not. So I guess that I have to select the source of the reference signal somewhere but I cannot find any function in mmwavelink to do that.

In an other thread () Vivek Dham said that the current firmware is not capable of supporting cascading. Is that correct or was he talking about RadarStudio? (Which is not a firmware...)

Best regards,

Fabian

  • 0
    TI__Mastermind 22155 points
    Fabian,

    The 4-chip cascade design is under development and so is the device firmware that supports it.
    The current device firmware for AWR1243 does not support the 20GHz output.

    We may add the support for this(device firmware) in the upcoming releases of the MMWAVE-DFP.

    Thanks,
    Raghu
  • 0 in reply to Raghunandan Kamath
    Intellectual 270 points
    Hi Ragu,
    I really hope that you are wrong about that, because engineers at TI where involved in this project and they said it should work.
    More interesting is, that the 20GHz output is working. I can see the signal in an oscilloscope and on a spectrum analyzer just fine. It seems that the 20 GHz input is not working as the data of the slaves is just some strange varying stuff.
    Is it possible to get a more recent version of the firmware that supports these features already?
    Best regards,
    Fabian
  • 0 in reply to Fabian Schwartau
    TI__Expert 7215 points
    Hi Fabian,

    MMWAVE-DFP 0.91 is released which has support for cascade. Please use the firmware and let us know if the issue is resolved at your end.

    I assume, you are configuring Master and Slave devices in rlSetChannelConfig. Master device generates the 20GHz LO signal and Slave device would receive the LO signal.

    Regards,
    Kaushal