USB4 2.0 specification released to achieve 80Gbps transmission bandwidth

CTOnews.com October 19 news, today, USB-IF announced the release of USB4 version 2.0 specification, which can achieve 80Gbps transport performance, and the related USB Type-C and USB Power Delivery (USB PD) specifications have also been updated.

Key features of the updated USB 80 Gbps solution include:

With a new physical layer architecture based on PAM3 signal coding, speeds of up to 80 Gbps can be achieved on 40 Gbps USB Type-C passive cables and newly defined 80 Gbps USB Type-C active cables.

The USB Type-C signaling interface can be asymmetrically configured to provide speeds of up to 120 Gbps in one direction while maintaining a speed of 40 Gbps in the other direction.

Update data and display protocols to better take advantage of the increase in available bandwidth.

Consistent with DisplayPort 2.1and PCI Express 4.

Backward compatibility with all previous versions of USB.

CTOnews.com learned that the DP 2.1specification was released a few days ago. DisplayPort 2.1strengthens consistency with the USB Type-C specification and the USB4 PHY specification to promote a common PHY that provides services to DisplayPort and USB4. In addition, DisplayPort 2.1adds a new DisplayPort bandwidth management feature that enables DisplayPort channels to coexist more effectively with other I / O data traffic over USB4 links.

At present, many high-end 4K monitors choose to support USB-C one-line connected notebooks. With the launch of USB4 2.0 with 80Gbps bandwidth, some 4K 144Hz monitors are also expected to be able to connect laptops over the USB-C line.