Intel® Arria® 10 Hard Processor System Technical Reference Manual

ID 683711
Date 1/10/2023
Public

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10.5. CPU Prefetch

The Cortex* -A9 performs instruction and data prefetches regardless of the state of the MMU.

A prefetch occurs when any address that is 4 KB above the current instruction pointer is accessed. The system has been designed to ensure that the system bus does not lock on prefetches. Any prefetches to unmapped memory space produce a decode error on the system interconnect.