DO-254 AXI Bridge for PCI Express 1.00a

The Advanced eXtensible Interface (AXI) Root Port/Endpoint (RP/EP) Bridge for PCI Express® is an interface between the AXI4 and PCI Express®. Definitions and references are provided in this document for all of the functional modules, registers, and interfaces that are implemented in the AXI Bridge for PCI Express®. Definitions are also provided for the hardware implementation and software interfaces to the AXI Bridge for PCI Express® in the Field Programmable Gate Array (FPGA).

Key features are:

  • Zynq™-7000, Kintex™-7, Virtex™-7, Artix™-7, Virtex™-6 and Spartan®-6 FPGA Integrated Blocks for PCI Express
  • Kintex™-7 / Virtex™-7 / Artix™-7 x1, x2, x4, x8 Gen 1 and x1, x2, x4 Gen 2
  • Virtex™-6 x1, x2, x4 Gen 1 and x1, x2 Gen 2
  • Spartan®-6 x1 Gen 1
  • Maximum Payload Size (MPS) up to 256 Bytes
  • Multiple Vector Messaged Signaled Interrupt (MSI)
  • Legacy interrupt supported
  • Memory-mapped AXI4 access to PCIe® space
  • PCIe® access to memory mapped AXI4 space
  • Tracks and manages Transaction Layer Packets (TLP) completion processing
  • Detects and indicates error conditions with interrupts
  • Optimal AXI4 pipeline support for enhanced performance
  • Compliant to Advanced RISC Machine (ARM®) Advanced Microcontroller Bus Architecture 4(AMBA®) AXI4 spec
  • Supports up to three PCIe® 32-bit or 64-bit PCIe Base Address Register (BAR) as Endpoint



The COTS version v1.03.a is the baseline from which the DO-254 AXI Bridge for PCI Express 1.00a comes from. Logicircuit applies the DO-254 lifecycle to this COTS version. As a result of this DO-254 process, the source code will be modified with the goal of achieving 100% code coverage, and the resulting code will be named DO-254 AXI Bridge for PCI Express 1.00a. Below are links to the Xilinx® Product Data for the version that was used as the basis, and the Logicircuit Data Sheet of the resulting DO-254 product.

Link to the Xilinx® Product Specification:

Link to the Logicircuit Data Sheet:

DO-254 PCI Express Wrapper 1.00a Data Sheet


Device Family Support

Xilinx® Artix™-7

Xilinx® Kintex™-7

Xilinx® Virtex™-7

Xilinx® Zynq™-7000

Xilinx® Spartan®-6