2.3.6. Device accesses filtering

In the r2p0 revision, the SCU also provides the ability to direct all device accesses onto the same AXI Master port, M0. See SCU Control Register.

This feature can be used in systems where slow device traffic is expected. Directing all device traffic on the same AXI Master port M0 ensures that the other AXI Master port M1 remains available for other traffic types, cacheable traffic for example.


The Address Filtering capabilities take precedence over the Force Device to AXI Master port M0 feature. That is, when address filtering is enabled, a device access falling in the Address Filtering range is issued onto AXI Master port M1 even if SCU Control Register bit[1] is set.

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