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TMS570LC4357: Prefetch Entry occurs during PBIST process

Part Number: TMS570LC4357

Hi all, 

Why does a prefetch entry error occur when testing cache areas in the PBIST module? How can I overcome this problem? 
(
I have tried setting the cache to invalid state, but it didn't work)

Can you explain with a sample project or code how I can test areas with single port memory type?

Thanks,

Best Regards,

Ktmn