Every USB device exposes a device descriptor that indicates the device's class information, vendor and product identifiers, and number of configurations. Each configuration exposes it's configuration descriptor that indicates number of interfaces and power characteristics.
2024年1月17日
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2023/11/10 · The purpose of the device descriptor is to let the host know what specification of USB the device complies with and how many possible ...
2024/01/17 · The device descriptor contains information about a USB device as a whole. This topic describes the USB_DEVICE_DESCRIPTOR structure and ...
BOS Descriptor Device Capability Type Codes ; 01H, Defines the set of Wireless USB-specific device level capabilities, Wireless USB Specification, Revision 1.1 - ...
USB defines class code information that is used to identify a device's functionality and to nominally load a device driver based on that functionality.