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F28M35H52C: C28 writes to the EPI0 extended RAM

Part Number: F28M35H52C

Hi team,

Here's an issue from the customer may need your help:

Data from external RAM is able to be read on the C28 side, but cannot be written. On the M3 side, read and write are both fine. The customer would like to know how to make the C28 to write to external RAM (EPI0 extended)?

Could you help check this case? Thanks.

Best Regards,

Cherry