TYPE C

Why TYPE-C is so popular is closely related to its characteristics. It can perform high-speed data transmission, power charging and video data transmission, and has an all-in-one function. And TypeC can provide a small size with better user experience , "reversible pluggable" connectors and bidirectional cables.

The previous USB interface was square, but the new TypeC interface is round, and the outside has become smoother, simpler and cleaner." Brad Saunders, chairman of the USB Implementers Forum (USB-IF), said when introducing the advantages of the TypeC interface, "using It is also more convenient, you can insert it forward or backward. When inserting, you can hear a 'click' sound, which means that there is no problem with the connection.

In order to allow Type-C to be plugged in both directions, USB-IF has made special provisions, that is, the number of Type-C pins has been increased to 24. Among these 24 pins, the interfaces on the upper and lower sides are the same. .As can be seen from Figure 2, there is a CC pin to detect positive and negative insertion, and to distinguish whether to transmit data, transmit power, or transmit video data.

Of course, TYPE-C is just an interface that can support USB3.1, 3.0 and 2.0 standards at the same time. The highest speed that can be supported at present is 10Gbps, and will support 20Gbps in the future. Therefore, using the Type-C interface does not mean that your transmission The speed is 10Gbps, and it may be 480Mbps supported by USB2.0. To achieve the highest transmission speed, it is also related to the selected cable. "If the USB2.0 standard is used, the cable is generally up to about 5m. If you use USB3.0, you must To reach 10Gbps speed, the USB cable can't be longer than 3m." Rahman Ismail, chief technology officer of USB-IF, explained.

If you want to transmit longer distances at the highest transmission speed, you can use the active cable solution. Roland Sperlich, manager of high-speed interfaces for high-performance analog products at Texas Instruments, recommends that he is responsible for the development of high-speed signal conditioning products with speeds in excess of 10Gbps, including TI's USB product.