How to distinguish between USB type-C data lines?
USB 3.1 is the latest USB-based transmission specification. The new USB 3.1 interface will double the bandwidth to 10Gbps, and it is worth noting that the encoding rate has been increased again.
USB 3.0 is 8b10b encoding, that is, only 8 bits are real data for each 10 bits of data transmitted, and the remaining 2 bits are used as check codes, so the entire bandwidth will have a loss of up to 20% (2/10), and the new USB 3.1 uses 128b/132b encoding. In 132bit data, only 4bit is used as the check code, and the transmission loss rate is drastically reduced to 3% (4/132). Therefore, USB 3.1 is not only to increase the bandwidth, but also Transmission efficiency has also increased a lot. It seems that USB 3.1 has a lot of benefits, but we must pay attention to USB 3.1 and USB Type-C are two different things. Strictly speaking, USB 3.1 is a transmission standard, and USB Type-C, accurately speaking, is an interface standard. There are three USB 3.1 interface standards, USB Type A, USB Type B (Micro USB) and the latest USB Type-C.
There is no absolute link between USB 3.1 and USB Type-C. Knowing that there is a USB Type-C interface does not necessarily mean that it supports the USB 3.1 standard. The USB 3.1 standard may not necessarily be the USB Type-C interface, we must be wide-open eyes, do not be deceived by bad companies
USB3.1 is an industry standard that is initiated by major companies such as Intel. The biggest characteristic of USB3.1 is the extremely rapid data transmission, and the theoretical speed can reach 10Gbps. USB Type-C is a connector specification consisting of a Type-C plug and a Type-C plug. In the latest USB 3.1 standard, there are three interface styles, one is Type-A (standard-A, the most common USB interface style on traditional computers), and the other is Type-B (both Micro-B, the current mainstream Android One of the interface styles used by smart phones, and the other is Type-C (ie, the newly designed interface style mentioned above).
Then we should be able to understand easily. Although USB Type-C is designed based on USB3.1, this does not mean that devices using this connection method must all support the USB3.1 standard; the opposite of what we think is that for The relatively old USB 3.0 Type-A interface device is compatible with the USB 3.1 standard.
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Post time: Jun-21-2018