XpressRICH-AXI Controller IP for PCIe 4.0

Controller IP for PCIe 4.0, 3.1/3.0 Supporting Root Port, Endpoint, Dual-mode Configurations, with Optional Built-in DMA and Configurable AMBA AXI Interconnect

XpressRICH-AXI™ is a configurable and scalable PCIe controller Soft IP designed for ASIC and FPGA implementation. The XpressRICH-AXI Controller IP for PCIe 4.0 is compliant with the PCI Express 4.0, and 3.1/3.0 specifications, as well as with the PHY Interface for PCI Express (PIPE) specification and the AMBA® AXI™ Protocol Specification. The IP can be configured to support endpoint, root port, and dual-mode topologies, allowing for a variety of use models, and exposes a configurable, flexible AMBA AXI interconnect interface to the user. The provided Graphical User Interface (GUI) Wizard allows designers to tailor the IP to their exact requirements, by enabling, disabling, and adjusting a vast array of parameters, including number, type, and width of AXI interfaces, PIPE interface width, low power support, SR-IOV, ECC, AER, etc. for optimal throughput, latency, size and power. Users may optionally enable the built-in legacy DMA engine, or connect a DMA engine externally such as PLDA's vDMA-AXI DMA, depending on the application requirements.  XpressRICH-AXI Controller IP is verified using multiple PCIe VIPs and testsuites, and is proven in production silicon in hundreds of designs using a variety of commercial and proprietary PCIe PHYs. PLDA XpressRICH-AXI Controller IP for PCIe 4.0 is the #1 choice for ASIC, SoC and FPGA designers looking for an enterprise-class PCIe interface solution with a high-performance, reliable, and scalable AMBA 3 AXI/AMBA 4 AXI interconnect. 

XpressRICH-AXI controller IP for PCIe 4.0 is integrated, validated, and silicon-proven with a variety of PCIe PHY IP covering PCIe 4.0, 3.1, 2.1, 1.1, and process nodes down to 7nm. Supported combos include PHY IP from our Partner Ecosystem, PHY IP from EDA vendors Synopsys and Cadence, PHY IP from leading edge ASIC vendors, and integrated PHY Hard IP from FPGA vendors Intel (Altera) and Xilinx.

Some of our proven PCIe 4.0 Controller-PHY combos include:

  • Avago PHY on TSMC 16FF/FF+, 7FF
  • Cadence on TSMC 28
  • Phison PHY on TSMC 28HPC+
  • Rambus PHY on TSMC 28
  • Synopsys PHY on TSMC 28HPC+
  • Terminus Circuit PHY on TSMC 28HPC
  • Xilinx Virtex UltraScale+ integrated PHY

Our unmatched expertise in PHY integration means customers can confidently select the PHY IP that best fit their requirements.

PCI Express is a complex protocol, and customers may not always have the expertise, the resources, or the time required to meet their development schedule. Our Advanced Design Integration (ADI) team helps customers shorten their development cycle by proposing expert services in the following areas:

  • Integration of commercial and proprietary PCIe PHY IP
  • Development and validation of custom PCIe PCS layer
  • Customization of the PCIe IP to add customer-specific features
  • Generation of custom reference designs
  • Generation of custom verification environments

Check out our Integration Services page for more information on our ADI team and its capabilities


  • Xilinx 7-series and UltraScale series: up to Gen3 x8
  • Xilinx UltraScale+ series : up to Gen4 x8 or Gen3 x16
  • Altera V-series (Arria, Stratix): up to Gen3 x8
  • Altera 10 series (Arria, Stratix): up to Gen4 x8 or Gen3 x16

Note that the number of ports that can be implemented on FPGA is limited by the number of transceivers/quads available on the targeted device.

PCI Express layer

  • Compliant with the PCI Express 4.0 or 3.1/3.0, and PIPE (8-, 16- and 32-bit) specifications
  • Compliant with PCI-SIG Single-Root I/O Virtualization (SR-IOV) Specification
  • Supports Endpoint, Root-Port, Dual-mode configurations
  • Supports x16, x8, x4, x2, x1 at 16 GT/s, 8 GT/s, 5 GT/s, 2.5 GT/s speeds
  • Supports AER, ECRC, ECC, MSI, MSI-X, Multi-function, P2P, crosslink, and other optional features
  • Supports many ECNs including LTR, L1 PM substates, etc.

AMBA AXI layer

  • Compliant with the AMBA® AXI™ Protocol Specification (AXI3, AXI4 and AXI4-Lite) and AMBA® 4 AXI4-Stream Protocol Specification
  • Supports multiple, user-selectable AXI interfaces including AXI Master, AXI Slave, AXI Stream
  • Each AXI interface data width independently configurable in 256-, 128-, and 64-bit
  • Each AXI interface can operate in a separate clock domain

Data engines

  • Optional built-in Legacy DMA engine
    • Up to 8 DMA channels, Scatter-Gather, descriptor prefetch
    • Completion reordering, interrupt and descriptor reporting
  • Optional Address Translation tables for direct PCIe to AXI and AXI to PCIe communication

Download the product brief or request the reference manual for complete specification and additional information.

  • Internal data path size automatically scales up or down (64-, 256- bits) based on link max. speed and width for reduced gate count and optimal throughput
  • Configurable pipelining enables full speed operation on Intel and Xilinx FPGA, full support for production FPGA designs up to Gen4 x8/Gen3 x16 with same RTL code
  • Stringent implementation of PCIe to AXI Ordering Rules and AXI to PCIe Ordering Rules guarantees AXI deadlock prevention
  • Carefully engineered AXI bridge & AXI interconnect allows full performance on AXI interfaces
  • Availability of multiple AXI Master interfaces, a key benefit for high end SSD to maximize throughput
  • Optional QuickBoot mode allows for up to 4x faster link training, cutting system-level simulation time by 20%

The XpressRICH-AXI controller IP for PCIe 4.0 is integrated and thoroughly verified using multiple VIP for foolproof reliability. We use a combination of Avery VIP, Cadence VIP, and Mentor VIP, and PCIe testsuites to achieve optimal coverage.

We use state-of-the-art FPGA prototyping platforms built in-house to thoroughly validate XpressRICH-AXI IP in real world conditions.

Our rigorous verification process ensure customers can focus on the core of their application.

IP files​

  • Verilog RTL source code
  • Libraries for functional simulation
  • Configuration assistant GUI


PCI Express® Bus Functional Model

  • Encrypted Simulation libraries


  • PCI Express® Windows x64 and Linux x64 device drivers
  • PCIe C API

Reference Designs

  • Synthesizable Verilog RTL source code
  • Simulation environment and test scripts
  • Synthesis project & DC constraint files (ASIC)
  • Synthesis project & constraint files for supported FPGA hardware platforms (FPGA)