1.4.2 AXI SlaveIF

The AXI4 slave interface forwards AXI read and write requests from the FPGA fabric to the PCIe link. The fabric application initiates PCIe transactions (memory write TLP and memory read TLP transactions) using the slave interface. The data on a read request comes back to the same interface. The slave path does not reorder transactions, but arbitrates between transactions if they occur simultaneously with master read completions. The order of priority for arbitrations is as follows:

1. Master read completions
2. Slave write requests
3. Slave read requests