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2.4.3. Prefetch buffer

The MMU-500 fetches in advance 4KB and 64KB sized pages into the prefetch buffer. This reduces latency for future PTWs. You can configure the depth of the prefetch buffer.

The prefetch buffer is a single four-way set associative cache that you can enable or disable, depending on the context. The prefetch buffer shares RAMs with the macro TLB cache. See Macro TLB.

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