Which Flexcomm is used for I2C Serial Boot on MIMXRT685-EVK?

[lorv]

Hi,

I am trying to do a serial boot over the I2C interface on an MIMXRT685-EVK. I cannot find out on which pins I have to connect the I2C master. I expected this information in  chapter 41.7.5 of the user manual where the I2C address for serial boot is documented but it is not there and I was not able to find it anywhere else.

I managed to do serial boot with the USART interface which uses Flexcomm0. This information I found in the user manual of the board not the user manual of the RT600 where I expected it.

Since USART serial boot uses Flexcomm0 I assume that for I2C a different Flexcomm is used. Am I right with this?

Where in the documentation can one find this information?

Which Flexcomm is used for serial boot over I2C? Or at least which pins on the board I need to connect to?

Thanks for your help!

[Miguel04 · Accepted solution]

Hi @lorv 

The flexcomm used for I2C serial boot is FC2, you can find this information on Table 996. ISP pin assignments.

Best Regards, Miguel.

[lorv]

Hi Miguel,

thanks for your response. I should have seen this myself, I somehow overlooked it.

regards