Avery Design Introduces CXL VIP

Tewksbury, MA., September 23, 2019 — Avery Design Systems, leader in functional verification solutions today announced CXL VIP supporting the latest CXL Specification 1.1 from the Compute Express Link (CXL) open standard.

“Built upon our well-established PCI Express® (PCIe®) verification IP infrastructure, the CXL supports PCIe 5.0 physical and electrical interface (PIPE 5.1) to provide advanced protocols for high-speed CPU interconnects for I/O (CXL.io), CPU-to-Memory (CXL.mem), and Cache interface (CXL.cache)”, said Chris Browy, VP Sales and Marketing of Avery Design.

CXL Verification IP

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The CXL VIP supports SystemVerilog/UVM host, device, PHY, and PIPE-to-PIPE box agents and models, extensive protocol checking, functional coverage, and a testsuite to ensure compliance. Common BFM features:

• Support PCIe Gen5 with alternate protocol negotiation to CXL
• Support pure PCIe mode and CXL mode for CXL.IO, CXL.Mem and CXL.Cache traffic.
• Unified user application data class for both pure PCIe and CXL traffic.
• Realistic traffic arbitration among CXL.IO, CXL.Cache, CXL.Mem and CXL control packets.
• Highly randomized and configurable
• Provides various callbacks and simplified APIs for tests writing
• Protocol analyzer debugging trace files
• User customizable way of FLIT packing
• Support full cache coherent load/store operations
• Support automatic credit-based CXL data flow control
• Supports CXL virtual LSM state machines
• Supports CXL link layer retry
• Supports CXL power management
• Support CXL reset mechanisms

Host BFM Features

• Automatic bus enumeration and configuration of the CXL hierarchies
• Support memory mapped registers (RCRB and MEMBAR0 region)
• Contains home agent with snooper filter of unlimited size
• Host memory of unlimited size

Device BFM features

• Host-managed device memory of unlimited size
• Configured as Type1, Type2 and Type3 device

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