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Adjusting the TRF372017EVM GUI Programming Data Rate

George Vogel
Prodigy 65 points

Do you know if there is an easy way to lower the rate of the GUI's SPI interface? I'm testing through a filtered interface, and the filtering seems to be squashing the bits (which are currently coming out at about 300kbps). Thanks!

  • 0
    TI__Mastermind 18065 points

    George:

    There is no way lower the rate of the SPI interface with the GUI.  The USB controller is operating at a standard speed.  It sounds like the filtered interface is slowing  the rise time of the SPI signals to the point where the transitions are not registering.  The SPI lines are not intended to drive highly capacitive loads and I have seen cases where filtering on the lines negates programming.  I suggest eliminating as much filtering as possible or injecting a buffer that can better drive the filtered load.

    --RJH

  • 0 in reply to RJ Hopper
    Prodigy 65 points

    Yeah, that is the alternative, and it sounds like that is my best option. Thanks, RJ.