7.8.2. ACP ARUSER and AWUSER signals

ACP transactions can cause coherent requests to the system. Therefore ACP requests must pass the Inner and Outer Shareable attributes to the L2. To pass the Inner Shareable attribute, use ARUSER[0] and AWUSER[0]. To pass the Outer Shareable attribute, use ARUSER[1] and AWUSER[1].

The setting of AxUSER[1:0] to 0b11 is not allowed and causes a SLVERR response.

Copyright © 2013, 2014 ARM. All rights reserved.ARM DDI 0488D