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AWR1642: BPMPHASE and TWIDINCR on AWR1642

Nomo
Guru 16800 points
Part Number: AWR1642
Other Parts Discussed in Thread: AWR1443

Hello,

Please let me know the detail of PARAM1_6 and PARAM1_7 register on AWR1642.

1.What the detailed function of BPMPHASE of PARAM1_6 register in TRM?
  I understand that AWR1642 doesn't support phase shifting for beamforming.

2.What the detailed function of TWIDINCR of PARAM1_7 register in TRM?

Best Regards,
Nomo

  • 0
    TI__Guru 50240 points
    Hi Nomo,

    I've referred your question to AWR team and someone should have an answer for you this week.


    Cheers,
    Akash
  • 0 in reply to Akash Gondalia
    Guru 16800 points
    Hello Akash-san,

    Thank you for your reply.
    I look forward to the answer.

    Best Regards,
    Nomo
  • 0 in reply to Nomo
    TI__Expert 4720 points
    Hi Nomo-san,

    The registers that you are looking at are used to control the 'radar hardware accelerator'. The 'radar hardware accelerator' is not present in AWR1642 (which has the DSP for a similar purpose), but it is present in AWR1443 (and in newer products), and can be used to perform different operations like FFT, CFAR, complex vector multiplication, etc. The PARAM* registers allow one to configure a sequence of operations, so that the accelerator can perform multiple operations without needing the R4F.

    You can read about the hardware accelerator in two documents published by TI
    1. Radar Hardware Accelerator - Part 1 from www.ti.com/.../swru526.pdf
    You can read about BPMPHASE in this document, which allows one to apply the BPM code before the 1D-FFT.
    Note that BPMPHASE only allows two phases 0 and 180 degrees. Also, you can read about the use of PARAM* registers here.
    2. Radar Hardware Accelerator - Part 2 from www.ti.com/.../swru527.pdf
    You can read about TWIDINCR in this document, which allows one to perform a frequency shift on ADC data.

    Regards
    Anil
  • 0 in reply to Anil Mani
    Guru 16800 points
    Hello Anil-san,

    Thank you for your reply.

    Best Regards,
    Nomo