• Skip to primary navigation
  • Skip to main content
  • Skip to footer
  • English
  • Investor Relations
  • Resource Library
  • Newsroom
  • Blog
  • Careers
  • Support Center
Rambus Logo

Rambus

At Rambus, we create cutting-edge semiconductor and IP products, spanning memory and interfaces to security, smart sensors and lighting.

  • Products
      • All
          • Memory Interface Chips
          • DIMM Chipsets
          • DDR5 DIMM Chipset
          • DDR4 NVRCD
          • DDR4 Register Clock Driver
          • DDR4 Data Buffer
          • CXL Memory Interconnect Initiative
          • Interface IP
          • Memory PHYs
          • GDDR6 PHY
          • HBM3 PHY
          • HBM2E PHY
          • DDR4 PHY
          • More…
          • SerDes PHYs
          • PCIe 6.0 PHY
          • PCIe 5.0 PHY
          • 32G C2C PHY
          • 32G PHY
          • 28G PHY
          • More…
          • Digital Controllers
          • Memory Controllers
          • CXL & PCI Express Controllers
          • MIPI Controllers
          • Video Compression and Forward Error Correction Cores
          • Security IP
          • Root of Trust Solutions
          • Security Protocol Engines
          • Inline Cipher Engines
          • Crypto Accelerator Cores
          • DPA Countermeasures
          • Software Protocols & Crypto Toolkits
          • Anti-Counterfeiting
          • Provisioning and Key Management
      • Memory Interface Chips
        • DIMM Chipsets
          • DDR5 DIMM Chipset
          • Non-Volatile DDR4 Registering Clock Driver
          • DDR4 Register Clock Driver
          • DDR4 Data Buffer
          • DDR3 Register Clock Driver
          • DDR3 Isolation Memory Buffer
        • CXL Memory Interconnect Initiative

        • Made for high speed, reliability and power efficiency, our DDR3, DDR4, and DDR5 DIMM chipsets deliver top-of-the-line performance and capacity for the next wave of computing systems. Learn more about our Memory Interface Chip solutions
      • Interface IP
          • Memory PHYs
            • GDDR6 PHY
            • HBM3 PHY
            • HBM2E PHY
            • DDR4 PHY
            • DDR4 Multi-modal PHY
            • DDR3 PHY
          • SerDes PHYs
            • PCIe 6.0 PHY
            • PCIe 5.0 PHY
            • PCIe 4.0 PHY
            • 32G C2C PHY
            • 32G PHY
            • 28G PHY
            • 16G PHY
            • 12G PHY
            • 6G PHY
          • Digital Controllers
            • HBM3 Controller
            • HBM2E Controller
            • GDDR6 Controller
            • LPDDR5 Controller
            • CXL 2.0 Controller
            • PCIe 6.0 Controller
            • PCIe 5.0 Controller
            • MIPI CSI-2/DSI-2 Controllers
            • Video Compression and Forward Error Correction Cores
            • More…

        • With their reduced power consumption and industry-leading data rates, our line-up of memory interface IP solutions support a broad range of industry standards with improved margin and flexibility. Learn more about our Interface IP solutions
      • Security IP
          • Root of Trust Solutions
          • Security Protocol Engines
            • MACsec Engines
            • IPsec, TLS, SSL Multi-Protocol Engines
            • High Speed Public Key Accelerator
          • Inline Cipher Engines
          • Crypto Accelerator Cores
            • DPA Resistant Cores
            • Basic Crypto Blocks
          • Anti-Counterfeiting
            • CryptoFirewall Cores
            • Circuit Camouflage Technology
          • DPA Countermeasures
            • DPA Resistant Cores
            • DPA Resistant Software Libraries
            • DPA Workstation Platform
          • Software Protocols & Crypto Toolkits
            • IPsec Toolkit
            • FIPs Cryptographic Libraries
            • MACsec Toolkit
            • IoT Security Framework
          • CryptoMedia
            • Content Protection Core
            • Content Protection Services
          • Provisioning and Key Management
            • CryptoManager Provisioning
            • CryptoManager Device Key Management

        • From chip-to-cloud-to-crowd, Rambus secure silicon IP helps protect the world’s most valuable resource: data. Securing electronic systems at their hardware foundation, our embedded security solutions span areas including root of trust, tamper resistance, content protection and trusted provisioning. Learn more about our Security IP offerings
  • Markets
      • AI & Machine Learning
        • Speed and Security for the Artificial Intelligence & Machine Learning Revolution
          • Products
          • SerDes PHYs
          • Memory PHYs
          • Digital Controllers
          • Memory Interface Chips
          • Root of Trust
          • Crypto Accelerator Cores
          • Protocol Engines
          • Provisioning and Key Management
          • AI & Machine Learning
      • Automotive
        • Providing Performance & Security for the Connected Car
          • Products
          • Memory PHYs
          • SerDes PHYs
          • Digital Controllers
          • Root of Trust
          • PKE Engine
          • MACsec Engines
          • Crypto Accelerator Cores
          • Provisioning and Key Management
          • Explore Automotive
      • Data Center
        • Optimizing capacity, connectivity and capability of the cloud
          • Products
          • SerDes PHYs
          • Memory PHYs
          • Digital Controllers
          • Memory Interface Chips
          • Root of Trust
          • MACsec Engines
          • Software Protocols
          • Provisioning and Key Management
          • See Data Center
      • Edge
        • Catching a tidal wave of data
          • Products
          • Memory PHYs
          • SerDes PHYs
          • Digital Controllers
          • Root of Trust
          • Crypto Accelerator Cores
          • Protocol Engines
          • Software Protocols
          • Discover Edge
      • Government
        • Securing Mission-critical Systems
          • Products
          • Root of Trust
          • Protocol Engines
          • Anti-Tamper Cores
          • Provisioning and Key Management
          • DPA Workstation Platform
          • SerDes PHYs
          • Memory PHYs
          • Digital Controllers
          • See Government
      • IoT
        • Making IoT Data Safe & Fast
          • Products
          • Root of Trust
          • TLS Toolkits
          • Provisioning and Key Management
          • Memory PHYs
          • SerDes PHYs
          • Digital Controllers
          • Explore IoT
  • Resources
    • Inventions
    • Buying Guide
    • Resource Library
      • Webinars
      • Product Selector
  • About
      • Corporate Overview
      • Leadership
      • Inventors
      • Careers
      • Locations
      • Investor Relations
      • Newsroom
      • Blog
      • Events
      • Partnerships
      • Certifications
      • Corporate Responsibility
      • Contact
Home > Inventions > Memory + Interfaces > FlexMode™ Interface

FlexMode™ Interface

As chip design and fabrication costs continue to rise with each new process node, the ability to integrate flexible, cost-effective multi-purpose interfaces becomes increasingly valuable. Traditional multi-modal implementations combine the worst-case signal pin count for the functional blocks of the interface for each memory type growing the pin count, area and cost of the interface with each mode supported. Rambus’ FlexMode™ Interface technology uses a programmable assignment of signaling pins as either data (DQ), or command/address (C/A), to enable multi-modal functionality while minimizing signal pin count, even when combining different signaling techniques such as single-ended and differential. This enables an SoC memory controller to be implemented in a single package design with no additional signal pin overhead. An SoC using FlexMode™ Interface technology can address a broad range of system requirements, from entry-level to high-end, without additional cost.

  • Supports multi-modal functionality– either single-ended or differential—in a single SoC, with no additional pins
  • Enables seamless transition to next-gen, high-performance, low-power memory
  • Delivers cost-effective flexibility for next-gen chip designs

What is FlexMode Interface Technology?

FlexMode™ Interface Technology

Traditional multi-modal implementations combine the worst-case signal pin count for the functional blocks of the interface for each memory type. When combining functionality of multiple memory types with differing signaling architectures, such as single-ended and differential, this implementation technique can lead to costly design inefficiencies including increased pin count and costs.

As an example, conventional signal mapping for a 32-bit wide single-ended DDR3 and GDDR5 memory interface combined with a differential XDR™2 memory interface would combine the 64 DQ pins from the XDR 2 memory (worst case DQ) and the 31 C/A pins from the DDR3 interface (worst case C/A) for a total of 95 signal pins (see “Conventional Multi-Modal Interface” diagram). This translates to a 16 signal pin overhead versus the single-ended GDDR5/DDR3 interface.

Conventional multi-modal interface

Who Benefits?

Rambus’ FlexMode™ Interface technology enables multi-modal functionality across differential and single-ended signaling memory types with no additional pin overhead and in a single SoC package design. By advancing data rates to up to 20 gigabits per second in an extremely power-efficient way with XDR 2 memory, and enabling compatibility to current industry-standard memories including GDDR5 and DDR3, FlexMode interface technology removes the technical and business barriers for customers to achieve unprecedented capabilities in their products.

Commercial server managers and consumer end users benefit from the reduced cost of ownership and increased battery life for their end systems and devices.

Footer

About

  • Corporate Overview
  • Leadership
  • Careers
  • Locations
  • Investor Relations
  • News
  • Corporate Responsibility

Products

  • Memory PHYs
  • SerDes PHYs
  • Digital Controllers
  • Server DIMM Chipsets
  • Root of Trust Solutions
  • Provisioning and Key Management
  • Protocol Engines
  • Crypto Accelerator Cores
  • Software Protocols
  • DPA Countermeasures
  • Anti-Counterfeiting
  • CryptoMedia

Markets

  • AI & Machine Learning
  • Automotive
  • Data Center
  • Edge
  • Government
  • IoT
  • Pay TV

Resources

  • Resource Library
  • Webinars
  • Inventions
  • Buying Guide
  • Contact

Copyright © 2023 Rambus.com. All Rights Reserved. Privacy Policy | Trademark & Guidelines

  • Facebook icon
  • Twitter icon
  • YouTuve icon
  • LinkedIn icon
  • Blog icon