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.

TMS320F280039C: change OTP to edit boot mode

Part Number: TMS320F280039C

Hi expert,

My customer follow the instruction in this document:  https://www.ti.com/lit/pdf/spracn1  to change the boot mode to no GPIO and only boot from flash mode.

They can succeed but need a POR reset.

However, I see the TRM :Figure 4-1. Device Boot Flow and  Figure 4-3. CPU Standalone Boot Flow

And I found either reset will cause the boot selection routine,

Customer test this using SysCtl_simulateReset(SYSCTL_CAUSE_XRS)

the code will run away, this could be their GPIO24 and GPIO32 is occupied by other circuits.

But The otp is already changed, so it should go to boot from flash in my understanding.

After a POR reset, everything will be normal. Could you kindly explain it?

BR

Emma