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How to use the Memory Reconstruction Port in Cortex-R series processor?

Hi,arm experts,

Some Cortex-R series processors include a Memory Reconstruction Port. What is the purpose of this port and how should it be used? In the structure in the figure, if I want to dump ram data when the processor meets error or even hangs by other interconnect transaction, will this port be helpful? if this port is helpful, how should I connect it to the rams?

Thank you a lot for your help