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Linux/IWR1642: IWR1642 power consumption and very low power working mode

roger zeng
Prodigy 230 points
Part Number: IWR1642

Tool/software: Linux

Hello, Guys:

Now I am working on IWR1642 platform for a radar module, The first version of the demo can working now, But it just very simple function version.

I have below issues need to fix:

1) Are there any way to set the IWR1642 in low power mode which core current is less than 5mA ??
2) How can I set IWR1642 make system level self checking and what is the software interface in SDK??
3) Base on current IWR1642 hardware platform can we find a way to make our source code safety, It means our source code and our application can not be hacked easily??

wait for your suggestion :)

RZ

  • 0
    TI__Guru 50240 points
    Hi Roger,

    I will need to discuss this with my team, we should have an answer for you by the end of the week.


    Cheers,
    Akash
  • 0
    TI__Mastermind 28055 points

    Hi Roger,

    1. You will not be able to achieve an operating current of 5 mA with the IWR1642 device. However, you may be able to duty cycle to achieve your goals.  Please see the Level Sensing TI design for an example.
    2. What kind of self checking do you want to do? These questions are answered in the SDK user's guide and the Technical Reference Manual (TRM).
    3. Please let me know what set of standards you are trying to achieve for security.  Our device does support security architecture.  Please let me know what you are targeting so I can give more details.  Please get in touch with the TI sales office to get more access to the secure boot information.

    Regards,

    Justin

  • 0 in reply to Justin Curewitz
    Prodigy 230 points

    Hi, Justin:

    below is our feedback of your comments:

    1: You will not be able to achieve an operating current of 5 mA with the IWR1642 device. However, you may be able to duty cycle to achieve your goals.  Please see the Level Sensing TI design for an example.

           --- We have checked the example. But for 1642, from Fig3.3 in TRM, we can see that 1642 can only control the power on/off for DSP power domain. So if we want to achieve low power consumption for the whole 1642, should we add external power on/off control circuits?  

    2: What kind of self checking do you want to do? These questions are answered in the SDK user's guide and the Technical Reference Manual (TRM).

             ---In TRM, it is mentioned “on-chip logic BIST support for the self-test is preferred”(for RF part). We are trying to find more details, especially on the realizations of the software. Is there any kind of “self-test” library for us to utilize?

    3:  Please let me know what set of standards you are trying to achieve for security.  Our device does support security architecture.  Please let me know what you are targeting so I can give more details.  

             ---We are targeting for protecting the codes in FLASH, while not increasing the cost for the hardware.

  • 0 in reply to Akash Gondalia
    Prodigy 230 points
    Hi Akash: Are there any comments for our update status ?
  • 0 in reply to roger zeng
    TI__Mastermind 28055 points
    Hi Roger,

    1. You would have to add some external power control to duty cycle the device. The Level Sensing example uses a low power MSP432.

    2. The RF Front end will automatically, periodically calibrate itself. The frequency of this calibration can be set with the mmWave Link API. Please see the mmWave Link API doxygen in the SDK.

    3. Generally, we support standard security features. Please contact your local sales office for more info.

    Regards,
    Justin