DP 2.1 specification released to enhance consistency with USB Type-C and USB4 PHY

The Video Electronics Standards Association announced that it has released DisplayPort 2.1, the latest version of the DisplayPort specification, which is backward compatible and replaces the previous version of DisplayPort (DisplayPort 2.0).

Officially, VESA has been working closely with member companies to ensure that DisplayPort 2.0-capable products truly meet the newer, more demanding DisplayPort 2.1 specification. As a result of this effort, all previously certified DisplayPort 2.0 products, including those that support UHBR (Ultra High Bit Rate) - be it GPUs, docking station chips, monitor scalar chips, PHY repeater chips such as retimers Or DP40 / DP80 cables (both passive and active, and use full-size DisplayPort, Mini DisplayPort or USB Type-C connectors) - certified to the stricter DisplayPort 2.1 specification.

Achieving a robust end-to-end user visual experience remains a top priority for VESA's DisplayPort specification, whether over native DisplayPort cables, over DisplayPort Alt Mode (DisplayPort over USB Type-C connectors), or over a USB4 link tunnel. Therefore, DisplayPort 2.1 enhances compliance with the USB Type-C specification and the USB4 PHY specification to facilitate a common PHY serving DisplayPort and USB4. Additionally, DisplayPort 2.1 adds a new DisplayPort bandwidth management feature that enables DisplayPort tunneling to coexist more efficiently with other I/O data traffic over the USB4 link. This increased efficiency comes on top of mandatory support for VESA's Visually Lossless Display Stream Compression (DSC) codec and VESA's panel playback capabilities.

Alan Kobayashi, Chairman of the VESA Board of Directors and Chairman of the VESA DisplayPort Task Force, said: "Given the significant overlap of use case models between the DisplayPort and USB4 ecosystems, achieving greater alignment between DisplayPort and USB on a common PHY has been a priority for VESA. Particularly important work." " DisplayPort 2.1 fuses DisplayPort with the USB4 PHY specification to ensure the highest video performance in a wide range of consumer products. Display transfer over DisplayPort with higher bit rates and proven DSC compression for visual The quality, even HDR content, provides ample bandwidth for the needs of almost any practical application. Features such as driving multiple displays over a single cable or enabling multiple functions such as video, power, and data transfer on a single port, no longer require any compromises in video format selection. The advanced capabilities of the DisplayPort video interface benefit from the invaluable contributions of our more than 300 member companies from across the electronics ecosystem.”

DisplayPort 2.1 also updates the DisplayPort cable specification, providing greater robustness and enhancements for full-size and Mini DisplayPort cable configurations, resulting in improved connectivity and longer cable lengths (DP40 cable over 2 meters, DP80 cable over 1 meter) performance. VESA-certified DP40 cables support up to UHBR10 link rates (10 Gbps) with four lanes providing a maximum throughput of 40 Gbps, while VESA-certified DP80 cables support up to UHBR20 link rates (20 Gbps) with four lanes, providing a maximum throughput of 80 Gbps.

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