What are the _usb interface types of the usb interface type?

2021-05-02

Universal Serial Bus (USB) is a serial bus standard for connecting computer systems and external devices. It is also a technical specification for input and output interfaces. It is widely used in information communication products such as personal computers and mobile devices. And extended to photographic equipment, digital TV (set-top box), game consoles and other related fields. The latest generation is USB3.1, the transmission speed is 10Gbit/s, the three-stage voltage is 5V/12V/20V, and the maximum power supply is 100W. The new TypeC plug-in is no longer positive and negative.

USB devices have the following main advantages:

1. Can be hot swapped. That is, when the user uses the external device, the user does not need to turn off the camera and then turn on the computer, etc., but directly plugs the USB into use when the computer is working.

2. Easy to carry. Most USB devices are known for being "small, light, and thin". It is convenient for users to carry large amounts of data with them. Of course, the USB hard drive is the first choice.

3. Standards are unified. Commonly used are the hard disk of the IDE interface, the mouse and keyboard of the serial port, and the printer scanner of the parallel port. However, with USB, these application peripherals can be connected to the personal computer with the same standard. At this time, there is a USB hard disk and USB. Mouse, USB printer, etc.

4. Multiple devices can be connected. USB often has multiple interfaces on a personal computer. It can connect several devices at the same time. If you connect a USBHUB with four ports, you can connect it again. Four USB devices, and so on, can be connected. Connect your home device to a personal computer at the same time without any problems (note: up to 127 devices can be connected).

Interface arrangement

USB is a commonly used pc interface. It has only 4 wires and two power supplies. Therefore, the signal is serially transmitted. The usb interface is also called serial port. The speed of usb2.0 can reach 480Mbps. Can meet a variety of industrial and civilian needs. USB interface output voltage and current is: +5V500mA actually has errors, the maximum can not exceed +/-0.2V is 4.8-5.2V. The four lines of the usb interface are generally allocated as follows. It is necessary to note that the positive and negative poles must not be reversed, otherwise the south bridge chip of the usb device or the computer will be burned: black line: gnd red line: vcc green line :data+white line: data-

USB interface definition map

USB interface defines color

The general arrangement is: red, white, green and black from left to right

definition:

Red-USB power: marked with -VCC, Power, 5V, 5VSB

White-USB data cable: (negative)-DATA-, USBD-, PD-, USBDT-

Green-USB data cable: (正)-DATA+, USBD+, PD+, USBDT+

Black-ground: GND, Ground

Usb interface type Daquan

B-5Pin

The MiniB type 5Pin interface is arguably the most common type of interface. This type of interface is popular among more and more manufacturers because of its superior anti-missing performance and small size. Today, this interface is widely used. Card readers, MP3s, digital cameras and mobile hard drives. [

B-4Pin

MiniB type 4Pin is commonly used in the following brands of digital products: Olympus C series and E series, most of Kodak's digital cameras, Samsung's MP3 products (such as Yepp), SONY's DSC series, Compaq's IPAQ Series products... MiniB type 4Pin also has a form, that is MiniB type 4PinFlat. As the name implies, this interface is flatter than the MiniB 4Pin and is widely used in devices. [1]

B-8PinMiniB type 8PinRound

Compared with the conventional one, the interface is changed from the original D-joint to a circular joint, and a projection is designed to prevent mis-insertion. This connector can be found in some Nikon digital cameras, and the CoolPix series is more common. Although Nikon has always insisted on using this interface, in some newer models, such as D100 and CP2000, the most popular MiniB type 5Pin interface is also adopted.

B-8Pin-2&TImes;4

MiniB type 8Pin2 & TImes; 4 This interface is also a relatively common interface, such as the familiar iRiver's famous MP3 series, which is known as the "iron triangle" 180TC, and many other products in the series are used interface. The application range of this kind of interface is also quite wide, but after iRiver has completely changed from the 3XX series to the MiniB type 5Pin interface, this specification obviously has no eye-catching MiniB type 5Pin.

MicroUSB

Micro-USB2.0B port MicroUSB is a portable version of the USB2.0 standard, which is smaller than the MiniUSB interface used in some mobile phones. Micro-USB is the next-generation specification of Mini-USB, and USB standardization organization US USBImplementersForum (USB-IF) It was completed on January 4, 2007. Micro-USB supports OTG, and like Mini-USB, it is also 5pin. The definition of the Micro series includes Micro-B series slots for standard equipment; Micro-AB slots for OTG equipment; Micro-A and Micro-B plugs, and cables. What makes the Micro series unique is that they contain a stainless steel housing that is not a problem for thousands of insertions.

USB TYPE-A

Suitable for PC PC and mobile phone adapters

This interface is the most common and familiar to everyone. Everyone's current computer is compatible with this interface, including the mouse and USB flash drive are also TYPE-A interface. Now USB TYPE A has evolved to the standard of USB 3.0. The interface of USB3.0 is 8 times faster than USB2.0. However, most TYPE A or USB 2.0 standards are currently available in the market. The best way to distinguish them is to see if its interface has a blue decoration (included in USB 3.0 or higher).

USB type-c

The biggest feature is support for USB interface double-sided insertion

USB Type C was widely supported in 2015, and many manufacturers have introduced usb type c interface products. The type-c interface is created based on the USB 3.1 standard. It can be plugged on both sides, with a transmission speed of 10 Gbps and a power supply capacity of 100 W. However, not all of these interface devices currently support the USB 3.1 standard. Some of them support the type-c plug-in in appearance, but still use the USB 2.0 standard.

USB-micro

Commonly used in Android phones, tablets, mobile hard drives, etc.

Micro USB is currently mainly divided into A type, B type, and USB3.0 B type. Among them, the Micro USB A type is the most widely used, and is called "Android port" or "Android line" by many people, because the Android phone uses this interface. Compared to the Mini USB, it is smaller and thinner. Many mobile devices, including tablets, mobile hard drives, digital cameras, and cameras, have eliminated the Mini USB port and switched to Micro USB A.

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