TMS320F28069M LaunchPad USB peripheral development

Albert Jansen

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

over 10 years ago

0 Gautam Iyer over 10 years ago

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 Albert Jansen over 10 years ago 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 Gautam Iyer over 10 years ago 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

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TMS320F28069M LaunchPad USB peripheral development