Cyclone® V Hard Processor System Technical Reference Manual

ID 683126
Date 8/28/2023
Public
Document Table of Contents

8.3.6. Cyclic Dependency Avoidance Schemes

The AXI protocol permits re-ordering of transactions. As a result, when routing concurrent multiple transactions from a single point of divergence to multiple slaves, the interconnect might need to enforce rules to prevent deadlock.

Each master of the interconnect is configured with one of three possible cyclic dependency avoidance schemes (CDAS). The same CDAS scheme is configured for both read and write transactions, but they operate independently.