USB4.0 Is A New Generation USB Peripheral Transmission Protocol

As mainstream home game consoles and computer consoles gradually support HDMI 2.1, the number of displays on the market that support HDMI 2.1 continues to grow. Many displays are also equipped with HDMI 2.1 enhancements, such as higher resolution and refresh rate, VRR, and HDR (high dynamic range). The bandwidth of HDMI 2.1 is as high as 48Gbps, which is significantly improved compared to HDMI 2.0's 18Gbps. It can process higher 4K refresh rate images, such as 4K120Hz, 4K144Hz, and even reach 240Hz when using DSC technology, providing players with an unprecedented visual experience. In addition, the VRR function of HDMI 2.1 can dynamically adjust according to changes in the game scene, and output the image of the display adapter to the screen in real time, effectively reducing or eliminating screen tearing and lagging, ensuring the smoothness of the game screen.
The built-in DisplayPort receiving port of VL605 supports HBR3 data transmission rate, which can reach 32.4Gbps in 4-channel mode. The HDMI transmitter supports FRL and TMDS modes, with peak bandwidths of 48Gbps and 18Gbps respectively. It also supports RGB and YCbCr color formats, 8-channel 192kHz LPCM, and various compressed audio source encoding formats. In addition, VL605 also has a built-in DSC decoder that supports the autonomous mode and source control mode in the latest DisplayPort 2.1 specification, giving the signal source more control capabilities. It is worth mentioning that in order to avoid malicious firmware code attacks, VL605 can perform secure firmware updates through built-in ECDSA verification.
Zhang Huineng, Director of the Product Department of Weifeng Electronics, emphasized the plasticity of VL605. He said, "DisplayPort and HDMI are currently the mainstream audio and video standards in the industry, and are now closely integrated with the USB Type-C specification. Coupled with via Electronics' diversified USB Hub control chips, VL605 can create various USB-C multifunctional docking station applications with USB PD charge through functions, providing power to various products at different USB speeds.". With the new generation of mobile chips from Apple, Qualcomm, and MediaTek all offering hardware ray tracing capabilities, AAA level gaming masterpieces are also being ported to mobile platforms, and the demand for VL605 products is clear. Paired with VL605's dual port USB PD controller and HDMI 2.1 output function, the phone can not only be used as a handheld gaming console, but also easily transformed into a home gaming console. When projected onto a 4K/8K large screen TV, it can simultaneously charge the phone, providing a brand new gaming experience

USB4.0 is a new generation USB peripheral transmission protocol that uses the USB Type-C (USB-C) interface and is directly connected to the CPU's PCIE bus (with lower CPU resource usage), with a maximum transmission rate of 40Gbps (higher transmission rate), as well as the ability to transmit Displayport video signals (for video output) and USB PD fast charging current (for fast charging). It is essentially Intel's Thunderbolt3 technology, but also supports the USB protocol, so it can be perfectly backward compatible with Thunderbolt3, USB3.2, USB3.1, and USB2.0 protocols. With the compatibility of USB4 and Thunderbolt3, Thunderbolt3 The underwater channel technology completely unlocks bandwidth, and in the future, consumers will be able to use a "single" USB 4 cable, combined with a daisy chain for multi screen output, and even connect other devices in series, such as ARs VR head mounted devices, etc., can provide computers with full scalability with just one interface. USB 4 will only have Type-C as a connection port. In combination with Thunderbolt, Power Delivery, DisplayPort and other standards, it will cover high-speed Internet, external graphics cards, high quality displays, high-capacity high-speed storage devices, and even allow two computing functions to connect with each other. These things can be achieved with only one Type-C port. And this also means that in the past, multiple connection ports such as HDMI, DisplayPort, AC power, and 3.5mm headphone jack existed simultaneously in one device, which may be unified by USB4.0. As a representative enterprise in the fields of USB4, SuperSpeed USB, USB PD, and display control chips, Weifeng Electronics has diversified USB Hub control chips, closely combining the mainstream audiovisual specifications of DisplayPort, HDMI, and Type-C specifications in the industry