For every Lookup Request processed by the CAM database a Lookup Response is generated. The Lookup Response is sent to the Lookup Response Interface. For a read Management Request, the response is sent to the Management Response Interface. Write Management Requests do not generate a Management Response. The Management Response Interface can only buffer one Management Response. The AXI4-Slave blocks the CPU read operation until the Management Response is available and sent on the AXI4-Lite interface.
When the Management Request FIFO becomes full, the AXI4-Slave stops accepting new Management Requests to prevent loss of Management Requests.
The Strict Priority Scheduler always selects a request from the Lookup Request FIFO first. A request can only be scheduled from the Management Request FIFO when the Lookup Request FIFO is empty.