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
Documentation
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:
http://www.xilinx.com/support/documentation/ip_documentation/axi_pcie/v1_03_a/ds820_axi_pcie.pdf
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
