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Defined Class Codes | USB-IF
https://www.usb.org/defined-class-codes#:~:text=The%20USB%20Audio%2FVideo%20%28AV%29%20Device%20Class%20Definition%20describes,video%2C%20voice%2C%20and%20all%20image-%20and%20sound-related%20functionality.
embedded - USB Audio Descriptor - Stack Overflow
https://stackoverflow.com/questions/23519753/usb-audio-descriptor
USB descriptors, block of code: ROM BYTE configDescriptor1 [] = { //CD 0x09, // Size : 9 Bytes 0x02, // Configuration Descriptor (0x02) //0xE4, // Total length in bytes of data returned Includes the combined length of all descriptors (configuration, interface, endpoint, and class- or vendor-specific) returned for this configuration. 0xB4 ...
USB Interface Association Descriptor - Windows drivers ...
https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/usb-interface-association-descriptor
The ECN specifies a USB descriptor, called the Interface Association Descriptor (IAD), that allows hardware manufacturers to define groupings of interfaces. The device classes that are most likely to use IADs include: USB Video Class Specification (Class Code - 0x0E) USB Audio Class Specification (Class Code - 0x01) Windows 7, Windows Server 2008, Windows …
AN295: USB Audio Class Tutorial
https://www.silabs.com/documents/public/application-notes/AN295.pdf
The template contains all descriptors and routines needed to create a composite device with an audio interface and an HID interface. The firmware template provides the following: Descriptors defining a USB device with two Audio Interfaces, one for full bandwidth and an alternate zero bandwidth interface.
_USB_INTERFACE_DESCRIPTOR (usbspec.h) - Windows …
https://docs.microsoft.com/en-us/windows-hardware/drivers/ddi/usbspec/ns-usbspec-_usb_interface_descriptor
The descriptor type. bDescriptor must be set to USB_INTERFACE_DESCRIPTOR_TYPE. bInterfaceNumber. The index number of the interface. bAlternateSetting. The index number of the alternate setting of the interface. bNumEndpoints. The number of endpoints that are used by the interface, excluding the default status endpoint. …
Standard USB descriptors - Windows drivers | Microsoft …
https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/standard-usb-descriptors
USB configuration descriptor. A USB configuration contains a series of interfaces. Each interface consists of one or more alternate settings, and each alternate setting is made up of a set of endpoints (see USB device layout). A configuration descriptor describes the entire configuration include its interfaces, alternate settings, and their endpoints.
USB Audio 2.0 Drivers - Windows drivers | Microsoft Docs
https://docs.microsoft.com/en-us/windows-hardware/drivers/audio/usb-2-0-audio-drivers
An AS interface descriptor must start with alternate setting zero with no endpoint (no bandwidth consumption) and further alternate settings must be specified in ascending order in compatible USB Audio 2.0 hardware. An alternate setting with a format that is not supported by the driver will be ignored.
Universal Serial Bus Device Class Definition for Audio …
https://www.usb.org/sites/default/files/audio10.pdf
USB Device Class Definition for Audio Devices Release 1.0 March 18, 1998 ii Scope of This Release This document is the 1.0 release of this device class definition.
USB Interface Association Descriptor Device Class …
https://www.usb.org/sites/default/files/iadclasscode_r10.pdf
The recent USB 2.0 ECN Interface Association Descriptor (IAD) solves the problem by defining a standard method in the USB device framework for describing associations of interfaces (and their alternate settings) that should be …
Defined Class Codes | USB-IF
https://www.usb.org/defined-class-codes
Use class code info from Interface Descriptors. Base Class 01h (Audio) This base class is defined for Audio capable devices that conform to the Audio Device Class Specification found on the USB-IF website. That specification defines the usable set of …
Universal Serial Bus Device Class Definition for …
https://usb.org/sites/default/files/termt10.pdf
interface. The AudioStreaming interface descriptor points to the associated Terminal through the bTerminalLink field. USB vendor specific 0x01FF I/O A Terminal dealing with a signal carried over a vendor-specific interface. The vendor-specific interface descriptor must contain a field that references the Terminal. 2.2 Input Terminal Types
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