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.

AWR2243: Configurable max sampling rate and # of chirp

Part Number: AWR2243
Other Parts Discussed in Thread: TIDEP-01012, MMWCAS-DSP-EVM

Hi Team,

One quick question.

Could you tell me the maximum sample rate and the maximum number of chirps that can be set on AWR2243, if we ignore the processing resource constraints of the later stages?

Also,  please tell me the maximum sampling rate and the maximum number of chirps that MMWCAS-DSP-EVM can deal with the data from TIDEP-01012 properly?

Regards,

Takashi Onawa

  • HI,

    The sampling rate is provided in the datasheet. If you are interested in a cascade system than you would consider AWR2243P

    Following is a snapshot from the AWR2243 datasheet

    The maximum number of chirps is not determined by the number of chirps but by the Frame Duration (FRAME_PERIODICITY) which is

    Following is a snapshot from the Radar Interface Control Document provided in

    C:\ti\mmwave_dfp_02_01_05_03\docs\mmWave-Radar-Interface-Control.pdf

    Regarding MMWCAS-DSP-EVM, the use case covered in TIDEP-01012 is raw data collection

    The EVM is described in the UG

     http://www.ti.com/lit/ug/spruis6/spruis6.pdf

    It includes a 512GB SSD. This maximum number of samples/chirps/frames will be limited by the memory size

    thank you

    Cesar

  • Hi Cesar-san,

    Thanks for your prompt response on this.

    The snapshot doesn't seem to have been linked correctly. Could you please put it again within today? (Or could you please write down in text?)
    I plan to have conf call with my customer in 10 hours.

    My customer is interested in cascade system. let me confirm some additional points.

    1. I can not find P version in the product folder though, do you mean XA2243PBGABL should be used for cascade system?  In my understanding, XA2243PBGABL is just pre-product version of AWR2243. Please tell me the difference between them if there are.

    2. Regarding MMWCAS-DSP-EVM, I understood that it is limited to supporting raw data sampling. My customer would like to know the upper limit of sampling rateand  the number of chirps if I let Jachinto do FFT(range and Doppler) and other processing(like DC correction and applying window functions), is it predictable? 
    If possible, Can you tell me what solution can handle maximum performance only used our devices?

    Regards,

    Takashi Onawa

  • Hi

    1. Please see awr2243 datasheet that mentions awr2243P. Table 6-1 shows the difference with AWR2243. For cascade you can use both AWR2243 or AWR2243P.

    I have to check with marketing team how you can order awr2243P.

    2. Does the customer plan to develop a 2-chip or 4-chip cascade?

    If customer would like to perform processing on Jacinto than the limitation will be the FFT processing.

    For 2-chip cascade Jacinto platform should be able to handle all configurations.

    For 4-chip cascade more analysis would have to be performed.

    Unfortunately I don't have detailed information about performance on the Jacinto platform.

    Thank you

    Cesar

    I would have to assign this thread to the Jacinto Team

  • Hi Cesar-san,

    Thanks for you prompt response on this.

    I could find the P version in the datasheet and ask about the processer part off line later, I could get their requirement in the meeting..

    let me go back to my original question. could you follow up my request below?

    The snapshot doesn't seem to have been linked correctly. Could you please put it again within today? (Or could you please write down in text?)

    Regards,

    Takashi Onawa

  • Hi

    Here it is

  • Hi Cesar-san,

    Thanks. I understood the period can control within 300us ~ 1.342s

    Sorry, One quick question.

    It looks AWR2243 supports CSI2 or LVDS interface , and  LVDS interface support up to 900Mbps x 4 lane.
    I understood that we can get higher band wide between Processer and AWR2243 if we use LVDS interface though, Is this understanding correct?

    Regards,

    Takashi Onawa

  • Hi,
     
    “higher band”. What is this compared against?  LVDS max rate is 900Mbps
     
    Thank you
    Cesar
  • Hi Cesar-san,

    Comparted with CSI2, According to the datasheet, its max rate is 600Mbps per lane right?
    So I thought that LVDS has mush higher bus band wide for data transmission to processing unit.

    Regards,

    Takashi Onawa

  • LVDS rate is provided in the datasheet.
     
    Max rate is 900Mbps
     
    Thank you
    Cesar