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TMS320F28388D: The SCI Boot GPIO settings.

Luke Chen
Expert 5090 points
Part Number: TMS320F28388D

Hi Champs,

My customer uses SCI Boot and finds that there will be some jitters on GPIO33(connect to an external pullup resistor) when Boot Code waits for autobaud lock.

My question is that will Boot ROM code modify GPIO33 settings, or GPIO33 will stay as a GPIO input pin with internal pullup disabled? What GPIO pins will be modified by SCI Boot ROM code?

Please advise your comments, thanks.

Regards,

Luke