By PURPLELEC | 15 March 2024 | 0 Comments
What is the USB4 structure and what is the protocol tunnel?
What is USB4 architecture?
The word fabric is a metaphor used to describe a network of interconnected nodes, such as switches. As shown in the picture, the cross pattern resembles a woven cloth. The USB Implementers Forum (USB-IF) adopted this term to describe how USB4's tunneling structure dynamically manages connections between USB4 routers so that multiple protocols can share the structure's resources simultaneously.
What is a protocol tunnel?
When devices communicate with each other, they do so using protocols. If both devices speak and understand the same protocol, a connection can be established. Conceptually, protocol tunneling creates a "pipe" using one protocol and uses it to send data in another protocol. USB4 protocol tunneling creates a USB-C tunnel through which DisplayPort or PCIe data can be sent. USB4 protocol tunneling is similar to Alt mode, but does not require a DP or PCIe controller.
Will Apple support USB4?
Apple's new MacBooks and Mac Mini will be the first to use Apple Silicon's own Arm-based processors, so there are some questions about USB4 support. However, Apple was able to implement support for USB4 and Thunderbolt 3 in time before the product was launched.
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