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TMS320F28069M LaunchPad USB peripheral development

Albert Jansen
Prodigy 130 points
Other Parts Discussed in Thread: TMS320F28069M, CONTROLSUITE, ISO7221C

Hello,

I would like to test the USB functionality present on the TMS320F28069M. I have a launchpad, and noticed that the USB pins were broken out as GPIO's. Would I need to create a small breakout board for the D+ and D- pins in order to fully test USB applications?

In the Getting Started sheet for the launchpad, there are Mux options for deciding different types of serial connectivity. However, I am having some trouble deciphering what they mean. Any guidance is appreciated!

Thanks

  • 0
    Guru 192875 points

    Hi Albert,

    Albert Jansen said:
    Would I need to create a small breakout board for the D+ and D- pins in order to fully test USB applications?

    Yes, if you refer the TRM the connection diagram is very well provided:

    There are usb based example codes available in controlSuite that you can implement.


    Regards,

    Gautam

  • 0 in reply to Gautam Iyer
    Prodigy 130 points

    Hi Gautam,

    Thanks for the response. I figured that this was the case. I am now wondering if I need to put a logic level converter in between the USB connector and the micro-controller, to translate the 5V USB logic down to the 3.3V micro-controller logic.

    Thanks,

    Albert

  • 0 in reply to Albert Jansen
    Guru 192875 points
    Yes, use a digital isolator. ISO7221C would be the best option.
    www.ti.com/.../iso7221c

    Regards,
    Gautam