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reset_mask

The mask to use when sending a reset. The mask is ORed into the

port to enable reset, and unset when deasserting reset. Use ‘-1’ as

a default mask if this port is not shared.

desired_speed

This parameter speciﬁes whether the device must be full-speed (ie,

USB-1.0) or whether high-speed is acceptable if supported by the

host (ie, USB-2.0). Pass

XUD_SPEED_HS

if high-speed is allowed, and

XUD_SPEED_FS if not. Low speed USB is not supported by XUD.

test_mode This should always be null.

When using the USB audio framework the

c_ep_in

array is always composed in the following order:

· Endpoint 0 (in)

· Audio Feedback endpoint (if output enabled)

· Audio IN endpoint (if input enabled)

· MIDI IN endpoint (if MIDI enabled)

· Clock Interrupt endpoint

The array c_ep_out is always composed in the following order:

· Endpoint 0 (out)

· Audio OUT endpoint (if output enabled)

· MIDI OUT endpoint (if MIDI enabled)

void Endpoint0(chanend c_ep0_out,

chanend c_ep0_in,

chanend c_audioCtrl,

chanend ?c_mix_ctl,

chanend ?c_clk_ctl,

chanend ?c_usb_test)

Function implementing Endpoint 0 for enumeration, control and conﬁguration of

USB audio devices.

It uses the descriptors deﬁned in descriptors_2.h.

This function has the following parameters:

c_ep0_out Chanend connected to the XUD_Manager() out endpoint array

c_ep0_in Chanend connected to the XUD_Manager() in endpoint array

c_audioCtrl Chanend connected to the decouple thread for control audio (sam-

ple rate changes etc.)

REV 6.1

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Request AudioReQuest N.Series Handbuch Seite 57