Motherboard Interface USB 3.1 What's the difference with type-c

Type-c interface

TYPE-C is a USB interface, a connection interface, both sides can be inserted, the size of about 8.3mmx2.5mm, as well as other interfaces to support the USB standard charging, data transmission, display output and other functions. TYPE-C was developed by USB Implementers Forum and became popular in 2014 after Apple, Google, Intel, Microsoft and other manufacturers supported it.

Type-c interface Type-c interface of several major features

(1) Audio

We know that the traditional audio 3.5mm audio interface is a modular audio signal, the new iphone release to cancel the 3.5mm headphone interface, instead of using the Linghting interface to transmit audio, TYPE-C interface is not to mention, using the Cdla audio standard The biggest feature is that the audio signal is not like the traditional analog signal headphones, in the mobile phone , the audio player to do digital analog signal conversion, but the phone in all digital signal transmission to the headset, to ensure that the phone output and headset input digital signal the same, the greatest degree to reduce the quality of loss. Leading the voice of the mobile phone to the digital age has completely terminated the 3.5mm audio interface.

(2) 8K video transmission

The new Usb-type-c is officially released based on the DisplayPort ALT mode standard early certification process. In the new technology development process, the product is usually ready to be sent before the compliance test procedure is completed. Conformance testing, however, is critical to ensure that data is successfully transferred out and used for good experiences with early products. The display Port 1.4 version can support 8K video transmission and displaying well.

Video electronic Standards organization VESA on the United Usb-if launched a "DisplayPort over Usb-c" program, which let the Usb-c interface with a DP video transmission function, the future development, it is estimated that the DP interface and DP line have been replaced.

(3) Type C power supply up to 100W

USB3.0 can reach 4.5w (0.9a/5v) power supply, and type C power supply can reach 100W! Single-looking data, type C means faster charging speed! But that's not the case. This is true for type-c that meet the USB 3.1 standard. USB 3.1 supports USB-PD (powerdelivery) power supply standard, the maximum power supply can reach 100 watts, charging speed will indeed be greatly improved.

USB 3.1 differs from type-c

USB 3.1 is the latest transmission specification based on USB, the new USB 3.1 interface will double the bandwidth to 10Gbps, and it is worth noting that the coding rate has been upgraded again. USB 3.0 for 8B10B encoding, that is, 10bit data per transmission, only 8bit is the real data, the remaining 2bit is as check code, so the entire bandwidth will have up to 20% (2/10) of the loss, and the new USB 3.1 is the use of 128b/132b encoding, In 132bit data, only use 4bit as the check code, transmission loss rate dropped to 3% (4/132), so the USB 3.1 is not only to enhance the bandwidth, even the transmission efficiency has increased a lot. The 5v/0.9a power supply is provided for the 5V/0.5A,USB 3.0 of USB 2.0. But people still want a stronger power supply, so the USB 3.1 (superspeed+) raises the maximum allowable standard to 20v/5a, powering 100W.

The green box is type-c, the red box is USB 3.1 The new USB 3.1 interface will double the bandwidth to 10Gbps, and it is worth noting that the coding rate has been raised again. USB 3.0 for 8B10B encoding, that is, 10bit data per transmission, only 8bit is the real data, the remaining 2bit is as check code, so the entire bandwidth will have up to 20% (2/10) of the loss, and the new USB 3.1 is the use of 128b/132b encoding, In 132bit data, only use 4bit as the check code, transmission loss rate dropped to 3% (4/132), so the USB 3.1 is not only to enhance the bandwidth, even the transmission efficiency has increased a lot. The 5v/0.9a power supply is provided for the 5V/0.5A,USB 3.0 of USB 2.0. But people still want a stronger power supply, so the USB 3.1 (superspeed+) raises the maximum allowable standard to 20v/5a, powering 100W.

Simply put, type-c is an interface type, and USB 3.1 is the latest USB standard specification. There is no absolute association between USB 3.1 and type-c. Knowing that there is a type-c interface does not necessarily mean that it supports the USB 3.1 standard. The USB 3.1 standard may not necessarily be a USB type-c interface. At this point, please do not be deceived by unscrupulous manufacturers.