7.6.2. ACP user bits

Because ACP transactions can be cached in the L2 cache, and the L2 observes inner memory page attributes, these must be supplied on the ACP.

To pass the outer page attributes, use the ARCACHE[3:0] and AWCACHE[3:0] fields.

To pass the inner page attributes, use the ARUSER[5:2] and AWUSER[5:2] fields. To pass the inner shareable attribute, use ARUSER[1] and AWUSER[1]. To pass the outer shareable attribute, use ARUSER[0] and AWUSER[0]. See Appendix A Signal Descriptions for more information.

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