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FRL Data Rate Chart

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Understanding FRL (Fixed Rate Link)

HDMI 2.1 features some new tricks that allow for the better transport of audio-video signals. One of those tricks is FRL or Fixed Rate Link.

FRL differs from the traditional TMDS signaling of previous HDMI versions (HDMI 2.0 and below). It defines signals by the number of lanes and their combined lane rates and has six possible FRL rates consisting of three to four lanes with a lane rate of 3-12Gbps (see table below). Notably, FRL will always attempt to maximize throughput based on the sink capabilities and, ultimately, the link (cable) maximum capacity using link training and each lane maintains a fixed data rate rather than the previous HDMI versions varying data rate TMDS Channels. Also, FRL embeds the TMDS Clock Channel directly into the HDMI Signal, allowing for features such as Variable Refresh Rate, Dynamic HDR, and more.

However, HDMI 2.1 is not entirely different because FRL is backward compatible with lower data rates and will fall back to traditional TMDS if FRL is not supported. When in fall back, TMDS is capable of all signals up to FRL2. Although a device may support a particular FRL rate, it might not support all possible video signals.
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  • Home
  • Products
    • Seven Series >
      • The 8K Seven Generator
      • The Seven Generator
    • Six Series >
      • 8K Murideo Pair: Ultimate HDMI Testing Set
      • 8K SIX-G Generator
      • 8K SIX-A Analyzer
    • 8K Fox & Hound: HDMI Troubleshooting KIT
    • Murideo HDBaseT Testing
    • Monitors >
      • 4K Dual Screen Field Test Monitor
    • Acoustic Calibration Kit
    • Milwaukee Packout Case
  • News
    • Blog
    • Newsletter >
      • 2023 >
        • Q1 2023
      • 2022 >
        • Q1 2022
        • Q2 2022
        • Q3 2022
      • 2021 >
        • June 2021
        • April 2021
        • March 2021
        • February 2021
        • January 2021
        • December 2020
  • Resources
    • HDMI 2.1 Bandwidth Calculator
    • HDMI Data Rate Charts >
      • Data Rate Chart
      • FRL Data Rate Chart
    • A/V Glossary
    • Loyalty Programs >
      • Upgrade Program
      • Shield Program
    • Videos
    • Test Pattern Library
    • Product Training >
      • Calibration Training
      • Fox & Hound Training
      • MSTest Pro Training
      • SIX-G Training
      • SIX-A Training
      • SEVEN-G Training
  • Support
  • Firmware
    • 8K SEVEN GENERATOR
    • 8K SIX G GENERATOR
    • 8K SIX A ANALYZER
    • 8K Fox & HOUND
    • SEVEN Generator
    • SIX G Generator
    • SIX A Analyzer
    • Fox and Hound
    • MU-M4SOL
    • Windows Drivers
  • Contact
  • Buy