What is a USB host driver?
The USB host driver controls the way the peripheral device communicates with the main computer system. The controller makes contact between the USB device, such as the keyboard or the printer, and ensures that it recognizes the computer operating system. Many operating systems communicate directly with the USB host driver to ensure that computer users do not have to install individual drivers for each device. Most of the time, the USB host controller will interact with C ++ or ANSI programming. When a computer user connects USB, such as a cable modem, to one of the ports, the operating system automatically recognizes devices. Depending on the system, it can automatically automatically recognize the equipment drivers, allowing traffic.
. Some USB Control will combine or pack the communication process of several standard devices. This helps to create effectiveness when it needs to be transmitted simultaneouslyst data. For example, computer users often enter data from the keyboard and mice under the text processing program simultaneously.
The bundle can get a USB host controller to communicate with several devices through one communication port. The fact is that each of these devices seems to be connected to different ports on the hardware interface. Within the programming language, the computer direction is to recognize both inputs as belonging to the same port. The driver may also be responsible for redirecting the power supply from the main system via USB cables that run on each separate device.
In most cases, the USB Will host will determine how each device gets its strength. Some USB protocol allows you to connect and disconnect the device when the computer is turned on. Other programming interfaces require the computer to be turned off and then restarted before the USB device recognizes. InteriorThe Rani SCSI is one protocol that does not allow users to simply "connect and play".
Data transfer speeds and bandwidth are also controlled by the host driver USB. Some drivers support hi-speed transmissions, while others only work in low-speed environment. There are some USB host controllers that work exclusively with video and audio devices that require a guarantee of a certain bandwidth.