XpressCCIX-AXI Controller IP for PCIe 5.0 with CCIX Extension

Controller IP for PCIe 5.0, 4.0, 3.1/3.0 Supporting Root Port, Endpoint, Dual-mode, with CCIX ESM Support and AMBA AXI Interconnect User Interface

XpressCCIX-AXI™ is a configurable and scalable PCIe controller Soft IP designed for ASIC and FPGA implementation. The XpressCCIX-AXI Controller IP for PCIe 5.0 supports the PCI Express 5.0, 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, and supports the CCIX Extended Speed Mode as defined in the CCIX Base Specification Rev. 1.1. 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 CCIX ESM mode, 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.  XpressCCIX-AXI IP is verified using multiple PCIe VIPs and testsuites, and integrated with select CCIX 20G/25G/32G compatible PHYs. PLDA XpressCCIX-AXI Controller IP for PCIe 5.0 with CCIX ESM support 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. 

We are actively working with our PHY ecosystem partners to provide an integrated and validated PCIe 5.0 controller + 32G PHY solution on a variety of process nodes and for a variety of foundries, as well as on leading edge FPGAs from Intel PSG and Xilinx.

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

PCI Express and CCIX are complex protocols, 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/CCIX PHY IP
  • Development and validation of custom PCIe PCS layer
  • Customization of the PCIe/CCIX 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.

We are actively working with Intel PSG and Xilinx to offer a path for PCIe 5.0/CCIX ESM 32G implementation on leading edge FPGA.

PCI Express layer

  • Supports the PCI Express 5.0, 4.0 or 3.1/3.0, and PIPE (8-, 16-, 32- and 64-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 32 GT/s, 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.

CCIX Support

  • Implements DVSEC Capability as per CCIX Base Specification Rev. 1.1
  • Supports CCIX ESM DataRate0 at 20 Gb/s and DataRate1 at 25 Gb/s

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

Integrity and Data Encryption (IDE)

  • Implements the PCI Express IDE ECN
  • Configurable IDE engine
    • Supports x1 to x16 lanes 
    • 256-bit or 512-bit data bus for PCIe IDE
  • Supports containment and skid modes
  • Supports early MAC termination
  • Supports multi-stream
  • Utilizes high-performance AES-GCM for encryption, decryption, authentication
  • PCIe IDE TLP aggregation for 1, 2, 4, 8 TLPs
  • PCIe IDE automatic IDE prefix insertion and detection
  • PCIe IDE automatic IDE sync/fail message generation
  • PCRC calculation & validation
  • Efficient key control/refresh
  • Bypass mode

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-, 512- bits) based on link speed and width for reduced gate count and optimal throughput
  • Dynamically adjustable application layer frequency down to 8Mhz for increased power savings
  • Optional MSI/MSI-X register remapping to memory for reduced gate count when multi-function or SR-IOV is implemented
  • Configurable pipelining enables full speed operation on Intel and Xilinx FPGA, full support for production FPGA designs up to Gen4 x8, Gen3 x16, CCIX 25G x8 with same RTL code (when supported)
  • Ultra-low Transmit and Receive latency (excl. PHY)
  • Smart buffer management on receive side (Rx Stream) and transmit side (merged Replay/Transmit buffer) enables lower memory footprint
  • Advanced Reliability, Availability, Serviceability (RAS) features include LTSSM timers override, ACK/NAK/Replay/UpdateFC timers override, unscrambled PIPE interface access, error injection on Rx and Tx paths, recovery detailed status and much more, allowing for safe and reliable deployment of IP in mission-critical SoCs
  • Optional Transaction Layer bypass allows for customer-developed application layer
  • Optional QuickBoot mode allows for up to 4x faster link training, cutting system-level simulation time by 20%

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

We use state-of-the-art FPGA prototyping platforms built in-house to thoroughly validate XpressCCIX-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)