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CCS/TMS320F28377S: 28377S :How to set bootctrl

Part Number: TMS320F28377S


Tool/software: Code Composer Studio

Hello Sir

The default pins of SCI boot in 28377S boot mode are GPIO84 and 85, but thses two pins are occupied, so GPIO28 and 29 need to be configured through bootctrl register.


But after configured the z1-bootctrl register, because bootctrl register is located in OTP FLASH, it can't be modified again, so the DSP will go directly to SCI boot1 every time when it's powered on, instead of FLASH boot.

There is a problem.

How to set bootctrl to satisfy :DSP enters FLASH boot mode in normal time,but when i want to program flash, it will boot through SCI boot1?

Thanks and regards