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ACP user signals

ACP transactions can cause coherent requests to the system. Therefore ACP requests must pass Inner and Outer Shareable attributes to the L2. To pass the shareability attribute, use the encodings described in Table 7.16. See ACP interface signals for more information.

Table 7.16. Shareability attribute encoding
AxUSER[1:0] Attribute
0b00 Non-shareable
0b01 Inner Shareable
0b10 Outer Shareable


This is the same encoding as AxDOMAIN on ACE, except that a value of 0b11 is not supported.

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