# AMD/Xilinx AXI Bridge
A Deep Dive into AMD/Xilinx AXI Bridge for PCI Express (AMD/Xilinx PG194) and Why We Tweaked C_M_AXI_NUM_READQ
Executive Summary AMD/Xilinx’ AXI Bridge for PCI Express (PG194) implements a bi-directional communication channel from and to FPGA internal memory mapped AXI4 masters and slaves to and from external PCIe…