VESA updates its DisplayPort standard

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The Video Electronics Standards Association (VESA) has released an updated version of its DisplayPort specification.

DisplayPort 2.1 is backward compatible with and supersedes the previous version of DisplayPort DisplayPort 2.0, said the computer display standards agency.

While DisplayPort 2.1 will replace the 2.0 specification, VESA said that all previously certified DisplayPort 2.0 products have already been certified to the stricter DisplayPort 2.1 spec.

Among the updates to the new specification are tightened alignment with the USB Type-C specification as well as the USB4 PHY specification to facilitate a common PHY servicing both DisplayPort and USB4.

DisplayPort 2.1 has also added a new DisplayPort bandwidth management feature to enable DisplayPort tunneling to coexist with other I/O data traffic more efficiently over the USB4 link.

"Achieving greater alignment between DisplayPort and USB on a common PHY has been a particularly important effort within VESA given the significant overlap in use case models between the DisplayPort and USB4 ecosystems," said Alan Kobayashi, VESA board chair and VESA DisplayPort task group chair. "DisplayPort 2.1 brings DisplayPort into convergence with USB4 PHY specifications to ensure the highest video performance across a broad range of consumer products.”

According to VESA, DisplayPort 2.1 has also updated the DisplayPort cable specification to provide greater robustness and enhancements to full-size and Mini DisplayPort cable configurations that enable improved connectivity and longer cable lengths (beyond two meters for DP40 cables and beyond one meter for DP80 cables) without diminishing UHBR performance.

VESA certified DP40 cables support up to the UHBR10 link rate (10 Gbps), with four lanes, providing a maximum throughput of 40 Gbps, while VESA certified DP80 cables support up to the UHBR20 link rate (20 Gbps), with four lanes, providing a maximum throughput of 80 Gbps.

Kobayashi said: “The advanced capabilities of the DisplayPort video interface are enabled by the invaluable contributions by our more than 300 member companies from across the electronics ecosystem."