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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,the%20usable%20set%20of%20SubClass%20and%20Protocol%20values.
embedded - USB Audio Descriptor - Stack Overflow
https://stackoverflow.com/questions/23519753/usb-audio-descriptor
I'm trying to implement a PIC32 MCU as a Audio device, using USB audio class 1. I have implementet this project: PIC32 USB Digital Audio Accesory Board Demos.zip and it works fine, but now i want to cut away some of the Audio Control Interface, so i'm having a more simple Audio function: The device seems to get enumerated properly acording to the status LED's on …
USB device descriptors - Windows drivers | Microsoft Docs
https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/usb-device-descriptors
A UMDF driver must query the framework device object for an IWDFUsbTargetDevice pointer and then call the IWDFUsbTargetDevice::RetrieveDescriptor method and specify USB_DEVICE_DESCRIPTOR_TYPE as the descriptor type. The host can also obtain the device descriptor by sending an URB. This method only applies to kernel-mode drivers.
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. Contributors Gal Ashour IBM Corporation Billy Brackenridge Microsoft Corporation Oren Tirosh Altec Lansing Craig Todd Dolby Laboratories Remy Zimmermann Logitech Geert Knapen Philips ...
USB Audio 2.0 Drivers - Windows drivers | Microsoft Docs
https://docs.microsoft.com/en-us/windows-hardware/drivers/audio/usb-2-0-audio-drivers
AN295: USB Audio Class Tutorial - Silicon Labs
https://www.silabs.com/documents/public/application-notes/AN295.pdf
the “USB Device Class Definition for Audio Devices”) Audio Format Descriptor – the template contains a descriptor structure for a Type I format audio stream. Using other types of streams (defined in the document titled “USB Device Class Definition for Audio Data Formats”) may alter the size and structure of this descriptor)
_USB_DEVICE_DESCRIPTOR (usbspec.h) - Windows …
https://docs.microsoft.com/en-us/windows-hardware/drivers/ddi/usbspec/ns-usbspec-_usb_device_descriptor
bDescriptorType Specifies the descriptor type. Must be set to USB_DEVICE_DESCRIPTOR_TYPE. bcdUSB Identifies the version of the USB specification that this descriptor structure complies with. This value is a binary-coded decimal number. bDeviceClass Specifies the class code of the device as assigned by the USB specification group. …
Audio + CDC USB composite device descriptor/USB ...
https://community.infineon.com/t5/PSoC-6/Audio-CDC-USB-composite-device-descriptor-USB-Configurator/td-p/330652
1) In the top level descriptor, the XML contains the following values: <bDeviceClass>0x00</bDeviceClass> <bDeviceSubClass>0x00</bDeviceSubClass> <bDeviceProtocol>0x00</bDeviceProtocol> The USB Configurator complains (as far as I can tell, correctly) that the values should be 0xEF, 0x02 and 0x01, respectively.
Unknown USB Device (Device Descriptor Request Failed ...
https://www.minitool.com/data-recovery/fix-unknown-usb-device-request-failed.html
As the root of the descriptor tree, the USB device descriptor contains all information about a certain USB device. It’s necessary for each Universal Serial Bus (USB) device to offer a single device descriptor including all the information related to this device.
USB Descriptor Dumper Tool - Thesycon
https://www.thesycon.de/eng/usb_descriptordumper.shtml
The USB Descriptor Dumper utility has the following features: Works on Windows 7, Windows 8, Windows 8.1 and Windows 10, including 64-bit variants. Does not require any driver or software installation. Works without administrator privileges. Does not modify any system settings. Does not affect normal operation of the USB device to be analyzed.
PIC32MZ USB AUDIO+CDC Composite device | Microchip
https://www.microchip.com/forums/m825661.aspx
USB_DESCRIPTOR_INTERFACE, // INTERFACE descriptor type (bDescriptorType) USB_DEVICE_AUDIO_CONTROL_INTERFACE_ID, // Interface Number (bInterfaceNumber) 0x00, // Alternate Setting Number (bAlternateSetting) 0x00, // Number of endpoints in this intf (bNumEndpoints) USB_AUDIO_CLASS_CODE, // Class code (bInterfaceClass)
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