Port Arbiter Masking

Zynq UltraScale+ Device Technical Reference Manual (UG1085)

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2.4 English

When the mask bit for an AXI interface to the QoS controller is set, it masks the request from the corresponding AXI port/direction to the port arbiter (PA). An external QoS controller controls the port arbitration by throttling certain XPI ports based on traffic class, queue status, and other dynamic criteria. The port masking is managed by the QoS setting in the tools and the various QoS policies followed by the DDRC.