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By PURPLELEC | 14 July 2023 | 0 Comments

Type-c HUB Thunderbolt 4 docking station solution

  The USB-IF organization launched the USB Type-C port (also known as the USB-C port) in 2015, which was an epoch-making change, also known as the first year of Type-C. Later, USB 3.1, USB 3.2 and USB4 were gradually introduced.
  As a new interface, type-c supports reversible plugging and has more pins (24), which has become the mainstream now. Then some devices only have a type-c interface. For example, a notebook computer with a type-c interface wants to connect audio, mouse, keyboard, etc., and the interface is not enough. At this time, a type-c interface expansion dock is needed. solve this problem.
docking station
  Dock, also known as docking station, is popular because of the limited number of USB or video interfaces of notebook computers, and users hope to expand more or more types of interfaces to meet the needs of multiple applications. There are many application scenarios for the type-c interface expansion dock. It can not only be connected to laptops and mobile phones, but also can be used to connect to Switch game consoles and tablets as screen projection.
  With the application of Thunderbolt 4, it is difficult for the current HUB driver chip to have a chip that can match the transmission rate of Thunderbolt 4. However, in December 21 last year, VIA was the first to release the VL830 USB4 terminal device conversion chip. The VL830 offers both USB and DisplayPort functionality, allowing it to operate at full performance when used with a Thunderbolt4 or USB4 system.
  The biggest feature of USB4 is that the transmission speed is faster, it supports more transmission protocols, adopts Type-C interface, is compatible with Thunderbolt 3, and supports 4K@60fps transmission. The popularity of USB4 will have a great impact on the form of terminal equipment, with fewer and fewer interfaces and a highly unified form, which means better compatibility.
  The USB4 conversion chip has a USB4 or Thunderbolt 4 uplink interface, 5 downlink interfaces and 1 DP interface. The DP interface supports 32.4Gbit/s bandwidth and supports up to 8K/60Hz HDR video output. The hardware supports the security function of digitally signed firmware, supports PWM driving LED indicators, and supports firmware upgrade through USB interface or I2C bus.
  The USB interface supports BC1.2, Apple2.4A, Samsung and other charging protocols, which can charge the connected devices. Built-in USB3.2 hub, supports four USB3.2 and one USB2.0 interface, also supports one DP1.4a interface. Among them, the DP interface can also be converted into an HDMI interface through other adapter chips, and with VL103, VL105 and other chips for PD support, it can realize the power supply of the USB-C port of the notebook computer, and the expansion of the USB interface and the display interface.

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