Vendor: Panmnesia Category: CXL

Link Controller IP

Two-Digit Nanosecond PCIe 7.0-CXL 4.0 Link Controller IP

Overview

Two-Digit Nanosecond PCIe 7.0-CXL 4.0 Link Controller IP

Link Controller IP implements critical logics allowing your hardware to communicate over the CXL network. Our optimized architecture offers two-digit nanosecond roundtrip latency, providing significant performance gain in demanding workloads such as AI, HPC, and cloud.

Key Features

Our product in more details

Specification

PCIe 7.0/CXL 4.0

Backward compatible with CXL 3.2, 2.0, 1.1, and previous versions of PCIe

Number of Lanes

Up to 16

Data Rate

128 GT/s

Roundtrip Latency

< 100ns

Bifurcation Support

x1, x2, x4, x8, x16

Supported Sub-Protocols

CXL.io, CXL.mem, CXL.cache

Unordered IO support

Back-invalidation support

Direct P2P support

Supported Device Types

CXL type 1/2/3 device support

Multi-Logical Device (MLD) support

Multi-Headed Device (MHD) support

Fabric-Attached Memory (FAM) support

Flit Format

68B, 256B, 256B standard, 256B LOpt support

Optimization Features

Multi-Data Header (MDH) support

Address Translation Service (ATS) support

ARB/MUX bypass support

Arbitration and data multiplexing/demultiplexing support

Latency Management

Sync header bypass support

Drift buffer support

Power Management

Low-power mode support

Security Features

Integrity and Data Encryption (IDE) feature support

Advanced Error Reporting (AER) support

IP Architecture

PCIe 7.0-CXL 4.0 Link Controller IP is composed of CXL controller and a PCIe controller, which handles CXL.cache/mem and CXL.io respectively. The IP allows configuration and status report through a set of registers. The IP can be connected to a user logic directly, or through the Link Acceleration Unit IP for faster time-to-market.

 

Block Diagram

Benefits

Silicon-Proven PCIe 7.0/CXL 4.0 Compliance

Ensure one-shot silicon success for your design and reduce time-to-market. Link Controller IP also offers full PCIe 7.0/CXL 4.0 feature support rigorously tested in multiple scenarios.

Configurable to Fit Your Need

Easily achieve your design goals. Link Controller IP offers diverse set of options you can configure for your memory expander, accelerator, and CPU design.

Best-In-Class Power Consumption

Save the power budget for your hardware design. Our precision architecture ensures the lowest power consumption for the controller IP.

Specifications

Identity

Part Number
Controller IP
Vendor
Panmnesia
Type
Silicon IP
Controller / PHY
Controller

Files

Note: some files may require an NDA depending on provider policy.

Provider

HQ: Korea

Learn more about CXL IP core

Panmnesia Unveils Next-Stage CXL Switch and Controller at ISCA 2026

Unlike the common approach of attaching devices directly to the CPU without a switch, the controller-and-switch design Panmnesia is presenting connects more devices and expands memory capacity much further, while keeping latency in a similar range and improving total system bandwidth.

Panmnesia Signs Strategic Partnership with Openchip at MWC26

The agreement marks a step toward technical collaboration aimed at enhancing performance, scalability, and resource efficiency in AI accelerator and infrastructure environments. The two companies exchanged in-depth technical perspectives on link architecture design and system optimization approaches for AI/HPC systems.

CXL Topology-Aware and Expander-Driven Prefetching: Unlocking SSD Performance

This paper presents an expander-driven CXL prefetcher, ExPAND, designed to offload primary LLC prefetching tasks from the host CPU to CXL-SSDs, addressing CPU design area constraints. Implemented within CXL-SSDs, ExPAND employs a heterogeneous machine learning algorithm for address prediction, enabling data prefetching across multiple expander accesses.

Frequently asked questions about CXL IP cores

What is Link Controller IP?

Link Controller IP is a CXL IP core from Panmnesia listed on Semi IP Hub.

How should engineers evaluate this CXL?

Engineers should review the overview, key features, supported foundries and nodes, maturity, deliverables, and provider information before shortlisting this CXL IP.

Can this semiconductor IP be compared with similar products?

Yes. Buyers can compare this product with similar semiconductor IP cores or IP families based on category, provider, process options, and structured technical specifications.

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