RT1170 ethernet can't work when use OCRAM for data

[zyz]

I am using MIMXRT1170-EVK board to debug ethernet, the demo routine used is lwip_tcpecho_freertos_cm7, the program works good, but when I try to use SRAM_OC1 as data storage area, the network can't working, can anyone help me?

The following are the default settings for the demo routine，it's work good

When I try to change to the following settings，the ethernet can't work:

[kerryzhou]

Hi @zyz ,

   This should relate to the cache.

   You can check this application note:

https://www.nxp.com/docs/en/application-note/AN12042.pdf

  Please read it carefully.

Best Regards,

Kerry