CXL 3.0 Verification IP

Truechip's CXL Verification IP provides an effective & efficient way to verify the components interfacing with CXL interface of an IP or SoC. Truechip's CXL VIP is fully compliant with latest CXL specifications. This VIP is a light weight with an easy plug-and-play interface so that there is no hit on the design cycle time.

Key Benefits

• Available in native System Verilog (UVM/OVM/VMM) and Verilog.
• Unique development methodology to ensure the highest levels of quality.
• 24X5 customer support.
• Unique and customizable licensing models.
• Exhaustive set of assertions, cover points with connectivity example for all the components.
• Consistency of interface, installation, operation, and documentation across all our VIPs.
• Provide complete solutions and easy integration in IP and SoC environment.
• On-the-fly protocol checking using protocol check functions, static and dynamic assertion.
• Provides a comprehensive user API (callbacks).
• Graphical analyzer for easy debugging, regression analysis, performance, statistics, charts and automatic integration.

Features​

• Compliant with the CXL 3.1,2.1, 1.1 specification.
• Support Pipe Specification 5.1
• Verification IP configurable as CXL Host and Device when operating in Flex Bus mode and as PCI Express Root Complex and Device Endpoint when operating in PCIe mode.
• Support for all three CXL protocols i.e., CXL.io, CXL.cache, CXL.mem, and device types to meet specific application requirements with user-configurable memory size for both CXL Host and Device.
• Support for CPI v1.0 (CXL-Cache/Mem Protocol Interface), CXS B (Credited eXtensible Stream), LPIF v1.1 (Logical PHY Interface) and PIPE v6.2 .
• Support for Alternate Protocol Negotiation for CXL Mode.
• Support for SerDes Architecture and Low Pin Count interface.
• Support for block-level verification.
• Support for CXL Link Layer Retry Mechanism.
• Support for 68B and 256B flit structure.
• Support for Configurable timeout for all three layers.
• Support for different CXL/PCIe Resets.
• Support for CXL 3.0 Configuration and Memory Mapped Registers (For CXL Device and Ports).
• Support for CXL ALMP transmission and reception to control virtual link state machine and power state transition requests.
• Support for CXL ACK forcing & Link Layer Credit exchange mechanism.
• Support Arbitration among the CXL.IO, CXL.cache and CXL.mem packets with Interleaving of traffic between different CXL protocols.
• Support for randomization and user controllability in flit packing.
• Support for 256B flit in 64GT/s with PCIe Gen6 as well as 32/16/8 GT/s speeds with backward compatibility.
• Support for power management including the low power L1 with sub-state and L2.
• Provides a comprehensive user API (callbacks).
• Built in Coverage analysis.
• Support for CXL in band control message with CXL 3.0. (Viral & Poison)
• Provides two types of 256B flits mechanism (Standard 256B flit & LO 256B flit).
• Support for Credit exchange field within 256B flit.
• Provides two types of routing mechanism. (HBR and PBR).
• Support all 3 coherency models HDM-D, HDM-H and HDM-DB to access HDM memory.
• Support PBR TLP for cxl.io

Deliverables

• CXL Host/Device
• CXL BFM/Agents for:
  • Host and Device sequences
  • Transaction layer(CXL.IO and CXL.cache, CXL.mem)
  • Link layer(CXL.IO and CXL.cache, CXL.mem)
  • Arbiter/Mux layer
  • Phy layer
• CXL Monitor and Scoreboard
• Test Environment & Test Suite:
  • Basic and Directed Protocol Tests
  • Random TestsError
  • Scenario Tests
  • Cover Point Tests
  • Compliance Tests
• Documents:
  • Integration Guide
  • User Manual
  • Quick start Guide, Release Notes
  • FAQs