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IWR6843ISK: Remove unnecessary pins from DCA1000

JIYEON PARK
Prodigy 240 points
Part Number: IWR6843ISK
Other Parts Discussed in Thread: IWR6843

Hello,

My team is about to make our own board.

And I want to check that is it possible to remove some pins from DAC1000 60 PIN connector to reduce size of board.

Below post said "RS232 (UART), SPI, SOP, NRST signals need to be connected to DCA1000 board".

https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/1216606/awr6843aop-custom-board-without-60-pin-connector

Then other pins like DMM, TRACE_DATA, PGOOD, I2C, HOST_INT could be removed?

We will use DCA1000 just for capturing radar data. We will not use advanced function.

Could you let me know which pin is mandatory and which pin is optional from below table?

  • 0
    TI__Expert 8135 points

    Hi,

    We are looking into your question and will get back to you soon.

    Regards

    Ankit

  • +1 in reply to Ankit Mohanty
    TI__Expert 8135 points

    Hi,

    The pins like PGOOD, I2C, HOST_INT would be necessary.

    • The DMM interface can be used to feed the digital data directly (bypassing the front end). One of the applications of this could be like a "playback" of the ADC data to optimize the DSP algorithm. The user needs to the feed this data along with clock and enable signals on the parallel DMM interface (also known as DP in EVM) pins at (CMOS level). The Data Modification Module (DMM) interface to emulate the field test scenario in the development environment.

      For the timing relationship you could refer to 8.10.11 section of Data sheet, Data Modification Module (DMM). The details of the interface and programming can be found in the IWR6843 Technical Reference Manual (Chapter 13 ADC Buffer).

    • The Trace interface is used for debug applications. For the timing relationship you could refer to 8.10.10 section of Data sheet, ETM Trace Interface.
    • PGOOD is necessary to ensure proper powering of the device, to ensure signal levels of all input voltage & power sequencing.
    • I2C interface will be used to capture data from eeprom(die id), current & temperature sensors.
    • Host_int will be necessary for capture over SPI interface to avoid unnecessary polling of device.

    If you choose not to use the Trace or DMM interface depending on your applications, you won't be able to execute loopback (to simulate the field test scenario in the development environment).

    Regards

    Ankit