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Mini USB Series

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Antenk mini usb:The small USB socket found on digital cameras, external hard drives, USB hubs and other equipment. Mini USB is much smaller than USB Type A and B but twice as thick as Micro USB (see illustration below).

MINI USB, also known as Mini USB, is a USB interface standard. USB is the abbreviation of universal serial bus in English, which means "universal serial bus" in Chinese. It is a technology developed for data transmission between PC and digital devices. Standard USB, MINIUSB and microusb have become the most common USB interfaces. Compared with standard USB, MINIUSB is smaller and suitable for small electronic devices such as mobile devices.

Mini USB is divided into a type, B type and ab type. Minib type 5pin interface is the most common interface. Due to its excellent anti misplug performance and small size, it is gaining the favor of many manufacturers. This interface is widely used in card readers, MP3, digital cameras and mobile hard disks.

Mini USB a, B connectors and their contacts (not drawn to scale) Mini USB connector contact function

1 VBUS (4.4–5.25 V)

2 D−

3 D+

4 ID

5 grounding
The ID foot is only used in OTG function. The Mini USB interface is divided into mini-a, B and ab interfaces. If your system is only used as a slave, then use the B interface. The system controller will judge the level of the ID pin and determine what kind of device is inserted. If it is Gaoping, it is the B connector. At this time, the system will do slave mode. If the ID is low, it will be a interface. Then the system will use HNP dialogue protocol to decide which is the master and which is the slave
OTG is the abbreviation of on the go, that is, OTG technology is to realize the data transmission between devices without host. It is mainly used in the connection between different devices or mobile devices for data exchange. For example, the digital camera is directly connected to the printer, and through OTG technology, the USB port between two devices is connected to print out the photos taken immediately; the data in the digital camera can also be sent to the mobile hard disk of USB interface through OTG, so there is no need to carry expensive memory card or carry a portable computer for field operation.

Except for pin 4, other interface functions of Mini USB are the same as those of standard USB. The fourth needle becomes the ID, which is connected to the fifth needle on the mini-a, and can be suspended in the mini-b or connected to the fifth needle.

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