Hi @ccc_clive ,
This issue is related to the interconnect bus fabrics, as the OCRAM need to use the SIM_M7
More details, please refer to the application note:
https://www.nxp.com/docs/en/application-note/AN12042.pdf
and
https://www.nxp.com/docs/en/application-note/AN12077.pdf
If you have more issues, please use your company email to create the question post instead of the 3rd part email, it will have higher support priority, thanks.
Best Regarrds,
kerry