• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 81 subscribers
  • Views 328 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TMS320F28075: SCI Boot Mode 0

ruediger.gerfried
Intellectual 880 points
Part Number: TMS320F28075

Hi hotline,

the default SCI-Boot 0 use GPIO72 and GPIO84 (table6-10 inSPRS902B Divice Boot Mode).

But simultaneously is GPIO84 = SCIA-TXD

How can this work???

Regards

Gerfried

  • 0
    TI__Mastermind 19810 points
    Gerfried,
    a weak pull up or pull down on the GPIO84 should not affect the SCI-TX functionality. You can take a look at the Launch PAD schematics for F2837xD, that part has the same GPIO usage. Once the device decodes the device boot mode, the GPIO is configured to be SCI TX pin.

    On a side note, on this part users can modify the device boot mode pins if needed, please refer to section 3.4 of the device TRM.

    Best regards
    Santosh Athuru