USB AUDIO 2.0 REFERENCE DESIGN XMOS, USB AUDIO 2.0 REFERENCE DESIGN Datasheet - Page 51

• Manufacturer Part Number: USB AUDIO 2.0 REFERENCE DESIGN
• Description: USB AUDIO 2.0 REFERENCE DESIGN
• Manufacturer: XMOS

Specifications of USB AUDIO 2.0 REFERENCE DESIGN

• Design Resources: USB AUDIO Schematic
• Main Purpose: Audio, Audio Processing
• Embedded: Yes
• Utilized Ic / Part: XS1-L1
• Primary Attributes: Audio data up to 24-bit @ 192kHz
• Secondary Attributes: I²S and S/PDIF
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 880-1017

The following functions can be called from the top level main of an application and
USB Audio Software Design Guide
5.2.3 Audio Streaming Functions
void AudioStreamStart
void AudioStreamStop
5.3 Component API
implement the various components described in 3.1.
int XUD_Manager
This function is called when the audio stream from device to host starts.
This function is called when the audio stream from device to host stops.
This performs the low level USB I/O operations.
Note that this needs to run in a thread with at least 80 MIPS worst case execution
speed.
Parameters
(USB OUT transaction); this includes a channel to obtain requests on
(USB IN transaction); this includes a channel to respond to requests on
Endpoint 0.
Endpoint 0).
Endpoint 0.
Endpoint 0).
connected to a process that can receive a token once every 125 ms. If
c_ep_out – An array of channel ends, one channel end per output endpoint
c_ep_in – An array of channel ends, one channel end per input endpoint
num_out – The number of output endpoints, should be at least 1 (for
num_in – The number of output endpoints, should be at least 1 (for
c_sof – A channel to receive SOF tokens on. This channel must be
( chanend c_ep_out[],
XUD_EpType epTypeTableOut[],
XUD_EpType epTypeTableIn[],
int noEpOut,
chanend c_ep_in[],
int noEpIn,
chanend ?c_sof,
out port p_usb_rst,
clock clk,
unsigned rstMask,
unsigned desiredSpeed,
chanend ?c_usb_testmode
( void )
( void )
)
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