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DDC114 Eval Kit Hardware Trigger

Andrew Vize
Prodigy 10 points
Other Parts Discussed in Thread: DDC114, DDC11XEVM-PDK

I am trying to use the hardware trigger on the DDC114 evaluation kit.  Below is the only description that I can find in the documentation.  What exactly is IP_1 and where on the evaluation board or USB motherboard is it located?

From DDC11xEVM-PDK User's Guide.pdf

       page 21

HARDWARE TRIGGER: In normal operation, this should be Disabled. If Enabled, a pulse can be
issued on IP_1 to start a conversion after Take Data is pressed. If enabled and no pulse ever comes,
the program appears to be frozen. If this condition happens, disable, cancel out the error messages,
and refresh.

 

Thanks,

Andrew

  • 0
    TI__Guru**** 181351 points

    Hi Andrew,

    On the DDC114 hardware, I suspect its the push button switch (SW1) that this paragraph is referring to.  Will try to verify ASAP and get the documentation clarified for you as well.

  • 0 in reply to Tom Hendrick
    TI__Guru** 113765 points

    Andrew,

    There are actually two versions of the kit that were released.  The first version has a very large motherboard that connects to the daughterboard via a ribbon connector.  The most recent version, which I think you have, is the smaller motherboard that is approximately 3 inches by 5 inches.  On this motherboard, the hardware trigger pulse should be connected to TP7.  Apparently we missed updating that section in the user guide.  For the location, see the red circled area in the included picture.

    Best regards,

    Bob B