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AN295: USB Audio Class Tutorial - Silicon Labs
https://www.silabs.com/documents/public/application-notes/AN295.pdf#:~:text=The%20protocol%20defines%20four%20different%20data%20transfer%20types,type%20to%20stream%20audio%20across%20a%20USB%20link.
How to send USB bulk transfer requests - Windows …
https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/usb-bulk-and-interrupt-transfer
To initiate a bulk IN transfer from a SuperSpeed endpoint, the host starts a bulk transaction by sending an ACK packet. The USB Specification version 3.0 optimizes this initial portion of the transfer by merging ACK and IN packets into one ACK packet. Instead of an IN token, for SuperSpeed, the host sends an ACK token to initiate a bulk transfer.
Does USBAUDIO.SYS supports bulk transfer?
https://social.msdn.microsoft.com/Forums/windowsdesktop/en-US/111ad622-0041-44be-a906-99dcea8ee9bd/does-usbaudiosys-supports-bulk-transfer
>The Universal Serial Bus Device Class Definition for Audio Data Formats >defines four categories of data types for USB Audio devices: Type I, >Type II, Type III, and MIDI. >Here, MIDI format supports bulk transfer. >of MIDI Devices is planned for Longhorn, then usbaudio.sys should support >BULK transfer in current versions of Windows.
USB in a NutShell - Chapter 4 - Endpoint Types
https://beyondlogic.org/usbnutshell/usb4.shtml
Bulk transfers are only supported by full and high speed devices. For full speed endpoints, the maximum bulk packet size is either 8, 16, 32 or 64 bytes long. For high speed endpoints, the maximum packet size can be up to …
AN295: USB Audio Class Tutorial - Silicon Labs
https://www.silabs.com/documents/public/application-notes/AN295.pdf
The protocol defines four different data transfer types (bulk, interrupt, control, and isochronous), each with unique characteristics and uses. USB device classes employ transfer types that suit the needs of particular applications and systems. The USB Audio class uses the isochronous transfer type to stream audio across a USB link. 2.1.
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