What is Type-C
USB Type-C, referred to as Type-C, is a hardware interface specification for the Universal Serial Bus (USB). In December 2013, the USB 3.0 promotion team announced the rendering of the next-generation USB Type-C connector, and then in August 2014 it was ready for mass production. The highlights of the new version of the interface are a slimmer design, faster transmission speed (up to 10Gbps) and more powerful power transmission (up to 100W). The biggest feature of the Type-C double-sided pluggable interface is that it supports double-sided insertion of the USB interface, officially solving the problem of "USB can never be plugged in correctly" and can be plugged in either way.
Three major advantages of Type-C
Advantage 1: Can be inserted in both directions
I believe everyone has encountered the situation of "the front side is not right, the back side is not right, and the front side is right" when using the micro USB interface before. I think this point alone is enough for USB-C to replace other USB interfaces, because USB-C can be plugged in on both sides. To put it more professionally, the interface has no directionality.
Advantage 2: Stronger power supply capacity
We know that the power supply current of the USB 2.0 interface of an ordinary computer is 0.5A. If it is USB 3.0, it reaches 0.9A. There is no change in this aspect of USB 3.1. The Type-C interface, our topic today, has not only 1.5A but also 3A current options (standard cable). The current that the interface can carry is actually 5A. In this way, its power supply capacity can reach up to 25W in theory, which is higher than many QC 2.0 fast chargers.
In addition, the USB-C interface also supports bidirectional power supply. It can accept power from the charger and can also be used as a charger to output current to the outside.
Advantage 3: Faster transmission speed
We still have to go back to the transmission speed. Although the minimum requirement for the USB-C interface is USB 2.0 speed, it is obviously a waste to use only USB 2.0 for such a good interface. It can fully achieve USB 3.0 or even USB 3.1 speed standards.
Type-C pin definition
1. If you are just using USB 2.0 like me, you can just use A6, A7, B6, and B7. Connect A6 to B6 for D+ and A7 to B7 for D-. The other data pins can be left floating.
2. Using USB 3.1 requires connecting two sets of TX+/- and two sets of RX+/- for high-speed data transmission.
3. The power-related pins are A4, A9; B4, B9, which are the power lines on the USB cable. The four outermost pins at both ends are the power ground.
4. It is worth noting that the configuration pins are A5, B5, CC1 and 2. For discovery, configuration, and management of connections. For plugs, there is only one CC, but for sockets there are two: CC1 and 2.
