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Original question:

AWR2243: ADC and analog LPF details

AWR2243: Queries about programmable filter

Taro Shibata
Genius 9860 points

Part Number: AWR2243

HI,

Please let me know about programmable filter newly supported in mmWave DFP 02.01.05.03 release.

 

(1)    Is it a HW filter or SW algorithm?

(2)    Is it mentioned in AWR2243 datasheet?

(3)    Please let me know more details about the filter design (how many orders, Decimation factor, etc)

 

 Thanks & Regards,

-Shibata

  • 0
    TI__Guru 58035 points

    Hello Shibata,

    Do you mean the programmable filter coefficient mentioned in the ICD?

    That is a filter in digital. You can find details in the ICD, refer to the following API-   "AWR_PROG_FILT_CONF_SET_SB"

    Regards,

    Vivek

  • 0 in reply to Vivek Dham
    TI__Genius 9860 points

    Hi Vivek,

     

    I’m referring “mmWave-Radar-Interface-Control.pdf”, I assume ICD stands for this document.

    Please let me know if I am wrong.

     

    It is still unclear, in the description for AWR_PROG_FILT_CONF_SET_SB, what “external programmable filter” means?

    Isn’t it a part of Radar Subsystem?

    Where does it located in the functional blocks of AWR devices?

    I would like to know exactly what it is, it is LPF or HPF, what is the purpose of this filter.

     

    Thanks & Regards,

    -Shibata

     

  • 0 in reply to Taro Shibata
    TI__Guru 58035 points

    Hello Shibata,

    The programmable filter is part of the digital front end filter chain. It is a LPF filter. There is a default digital that is available in the digital. But if the user wants to bypass the default filter chain and have his own filter coeffients , they can set it using the "AWR_PROG_FILT_COEFF_RAM_SET_SB" API.

    regards,

    Vivek

  • 0 in reply to Vivek Dham
    TI__Genius 9860 points

    Hi Vivek,

    Thanks for the clarification.

    Regards,

    -Shibata