EFUSE AREA WRITE OPERATIONS

SpeedyGonzaless · ‎08-25-2023

Hello,

I am using I.MX RT1170. I want to make the M4 processor the primary processor. There is a register in the EFUSE region for this.But i am wondering something. Can the change made in the Efuse region be undone? After M4 is selected, can M7 processor be primary again in different projects?

ramprakash09 · ‎08-25-2023

Hi,

It look like that the primary processor is determined by a register in the EFUSE region. Once a change is made in the EFUSE region, it is typically permanent and cannot be undone. This is because the EFUSE region is usually used for one-time programmable (OTP) memory, which can only be written to once.

So, if you make the M4 the primary processor by changing the register in the EFUSE region, you will not be able to make the M7 the primary processor again in different projects. This is a critical decision and should be made with care.

Regards

View solution in original post

ramprakash09 · ‎08-25-2023

Hi,

It look like that the primary processor is determined by a register in the EFUSE region. Once a change is made in the EFUSE region, it is typically permanent and cannot be undone. This is because the EFUSE region is usually used for one-time programmable (OTP) memory, which can only be written to once.

So, if you make the M4 the primary processor by changing the register in the EFUSE region, you will not be able to make the M7 the primary processor again in different projects. This is a critical decision and should be made with care.

Regards

SpeedyGonzaless · ‎08-25-2023

Hello,

Thank you for your support.