VESA Released DisplayPort 2.1 Specification

Wed Oct 19 10:45:47 CST 2022

VESA-Releases- DisplayPort2.1-Specification

VESA Released DisplayPort 2.1 Specification

More than three years after the birth of the DisplayPort 2.0 standard, VESA(Video Electronics Standards Association) announced the release of the DisplayPort 2.1 specification, the latest version of the DisplayPort specification that will be backward compatible and replace the previous version (DisplayPort 2.0), and that all previously certified DP 2.0 products, are compliant with the DP 2.1 specification.

DisplayPort2.1-Specification

VESA's affirmation on DisplayPort 2.1

VESA says it has been working closely with member companies to ensure that DisplayPort 2.0-enabled products are in fact compliant with the newer, more demanding DisplayPort 2.1 specification. By the efforts of VESA and all parties, all previously certified DisplayPort 2.0 products, whether they support UHBR, whether they are GPUs, docking chips, monitor scalar chips, PHY repeater chips, or DP40/DP80 cables, including active and passive, full-size DisplayPort ports, Mini DisplayPort ports or USB Type-C ports have been certified to the stricter DisplayPort 2.1 specification.

DP40-and-DP80-Cable

Both ends of the DP Cable will be marked with DP40 or DP80 for easy differentiation.

Differences between DisplayPort 2.0 and DisplayPort 2.1

It appears that DisplayPort 2.0 and DisplayPort 2.1 specifications are very much the same and interchangeable, with the most important change being the new Display Port Bandwidth Management feature, which allows display port tunnels to coexist more efficiently with other I/O data traffic over USB4 links. Efficiency improvements are on top of VESA's mandatory support for the DSC codec and Panel Replay feature, allowing DSC to reduce bandwidth usage by 67%, and does not affect picture quality in some cases, the new Panel Replay (Panel Replay) feature can reduce tunnel packet transmission bandwidth by more than 99%, which can be achieved on USB4 connections, DP tunnels and other I/O efficient coexistence of DP tunneling with other I/O transfers on USB4 connections. In addition, the DisplayPort 2.1 specification strengthens the consistency with USB Type-C specification and USB4 PHY specification, and the three specifications have been connected at the bottom layer, thus allowing DP and USB4 interfaces to share the common PHY physical layer services.

The DisplayPort 2.1 specification also updates the DisplayPort cable specification to provide greater stability and enhanced features for full-size DisplayPort and Mini DisplayPort cable products, improved connectivity without degrading UHBR, and longer cable lengths. VESA-certified DP40 and DP80 UHBR cables, the former supporting UHBR10 link rate (four lanes combined up to 40Gbps) and the latter having to support UHBR20 link rate (four lanes combined up to 80Gbps), can also meet UHBR13.5 link rate (54Gbps) requirements. the DP40 cable can exceed 2 meters and the DP80 data line can also exceed 1 meter, and neither affects UHBR performance.

Product Support

AMD's RX7000 series graphics cards, which will be released next month, are expected to support DP 2.1 for the first time. VESA also announced that a number of important products, including but not limited to the latest GPUs, docking chips, monitor scalar chips, PHY repeater chips, and DP40/DP80 cables and interfaces of various shapes, have been certified for DP 2.1 technology in parallel and are ready for immediately to the market.

DP-and-USB-C-share-one-port

ROG X670E motherboard has done DP and USB4 together

About VESA

VESA (Video Electronics Standards Association) is an international nonprofit corporation led by a board of directors, which represents a voting membership of more than 300 corporate members worldwide.

about-VESA

About DisplayPort

DisplayPort delivers more high-performance features than any other digital interface. Designed to replace older standards like DVI and VGA, DisplayPort opens up new possibilities in computing, digital displays and consumer electronics. It’s the future standard and it’s available today.

Tips: Different video interfaces of DisplayPort/HDMI/USB-C/USB-A

Different-video-interfaces



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By HornmicLink_Henry @221019 10:58