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AVR32716: AVR UC3 USB Audio Class
https://ww1.microchip.com/downloads/en/Appnotes/doc32139.pdf
This application note demonstrates, through a stand alone application, the usage of the Atmel AVR UC3 USB audio class. The application operates in the USB device mode, enumerating as a “stereo headset with microphone”. It uses the USB Audio and HID (consumer) classes. An essential issue in audio is synchronization of the data streams.
USB Audio Class 2.0 - Converting 24 bit audio to 32 bits ...
https://community.atmel.com/forum/usb-audio-class-20-converting-24-bit-audio-32-bits
Hi everyone, I've been working on programming a USB Audio Class 2.0 device on a SAM3U chip. Right now I'm having trouble converting the 24 bit audio stream into a 32 bit audio stream to play happily with the DMAC and SSC peripherals.
Atmel AT06475: SAM D21 USB - Microchip Technology
https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-42261-SAM-D21-USB_Application-Note_AT06475.pdf
asynchronous USB Audio applications to provide an explicit feedback on the isochronous endpoints usage in the device. It provides a mechanism to the host on adjusting the data rate based on the device operation. A feedback endpoint is an interrupt endpoint having the same endpoint number as the isochronous endpoint but operating in the
Atmel AVR4950: ASF - USB Host Stack
https://ww1.microchip.com/downloads/en/DeviceDoc/doc8486.pdf
Atmel AVR4950 3 8486A-AVR-02/12 3 USB host application notes Several USB host examples are provided by Atmel. For each example, Atmel provides several application notes. Figure 3-1. USB host application notes. Basic USB knowledge is necessary to understand the USB host class application notes (Classes: HID, CDC, MSC, PHDC, AUDIO).
Atmel AVR32839: AVR UC3 Audio Player
https://ww1.microchip.com/downloads/en/AppNotes/doc32177.pdf
initialize them using the USB Mass Storage class – Audio codec tasks: these tasks manage the audio decoding Here is an example of a player implementing an MP3 and WMA decoders. #define task() \ {\ task_usb(); \ task_usb_ms(); \ task_mp3(); \ task_wma(); \} It should be noted that the Atmel AVR UC3 Audio Player also supports digital music streaming
Atmel AVR4901: ASF - USB Vendor Class Application
https://ww1.microchip.com/downloads/en/Appnotes/doc8481.pdf
Atmel AVR4901: ASF - USB Vendor Class Application. Features. • USB 2.0 compliance. - Chapter 9 compliance. - Full Speed (12Mbit/s), High Speed (480Mbit/s) data rates. • Control, Bulk, Isochronous and Interrupt transfer types. • Small stack size frees space for main application.
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