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USB Host Audio - packet size and timing help wanted ...

https://www.microchip.com/forums/m548418.aspx

Re:USB Host Audio - packet size and timing help wanted 2011/01/10 01:53:25 0 I have played a lot with audio class and generic iso endpoints and your ideas are for me somehow puzzling, and interesting too.

USB Audio 2.0 Drivers - Windows drivers | Microsoft Docs

https://docs.microsoft.com/en-us/windows-hardware/drivers/audio/usb-2-0-audio-drivers

This means that the deviation of actual packet size from nominal size must not exceed +/- one audio slot (audio slot = channel count samples). Descriptors An audio function must implement exactly one AudioControl Interface Descriptor (ADC-2 4.7) and one or more AudioStreaming Interface Descriptors (ADC-2 4.9).

Technical Note TN2274: USB Audio on the Mac

https://developer.apple.com/library/archive/technotes/tn2274/_index.html

The packet size cannot exceed 1023 bytes for full speed devices and 1024 bytes for high speed devices (Section 5.6.3 of the USB 2.0 Specification.) To determine the exact value, one needs to identify the supported format and sample rate configuration that consumes the largest possible bandwidth for the endpoint.

[v4] ALSA: usb-audio: Fix max packet size calculation for ...

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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. ... endpoint descriptor to indicate packet size restrictions. Revised endpoint descriptors according to …

AN295: USB Audio Class Tutorial - Silicon Labs

https://www.silabs.com/documents/public/application-notes/AN295.pdf

For Full Speed USB devices such as the Silicon Laboratories C8051F32x, a data frame spans 1 millisecond. A device can be configured to transmit as few as 1 byte per frame or as many as 1023 bytes per frame.

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