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Accelerator Coherency Port

The processor supports an Accelerator Coherency Port (ACP). This is an AMBA 4 AXI slave interface. The ACP is provided to reduce software cache maintenance operations when sharing memory regions with other masters, and to allow other masters to allocate data into the L2 cache.

The ACP slave interface allows an external master to make coherent requests to shared memory, but it does not support cache maintenance, coherency, barrier, or DVM transactions.

See ACP and the ARM® AMBA® AXI and ACE Protocol Specification AXI3, AXI4, and AXI4-Lite, ACE and ACE-Lite for more information.

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