Request AudioReQuest N.Series Manuál stáhnout pdf (Strana 36)

USB Audio Design Guide 36/61

3.18.4.1 Conﬁguration 2ioxs

This conﬁguration runs in high-speed Audio Class 2.0 mode, has the mixer disabled,

supports 2 channels in, 2 channels out and supports sample rates up to 192kHz

and S/PDIF transmit.

3.18.4.2 Conﬁguration 2iomx

This conﬁguration disables S/PDIF and enables MIDI.

This conﬁguration can be achieved by in the Makeﬁle by deﬁning SPDIF as zero:

- D SPDIF =0

and MIDI as 1:

- D MIDI =1

3.18.4.3 Conﬁguration 1ioxs

This conﬁguration is similar to the ﬁrst conﬁguration apart from it runs in Audio

1.0 over full-speed USB.

This is achieved in the Makeﬁle by:

- DAUDIO_CLASS =1

3.19 The USB Audio 2.0 DJ Kit (U-Series)

The USB Audio 2.0 Reference Design is an application of the USB audio framework

speciﬁcally for the hardware described in §2.3 and is implemented on the U-Series

single tile device (500MIPS). The software design supports four channels of audio

at sample frequencies up to 192kHz and uses the following components:

· XMOS USB Device Driver (XUD)

· Endpoint 0

· Endpoint buﬀer

· Decoupler

· Audio Driver

· Device Firmware Upgrade (DFU)

· S/PDIF Transmitter or MIDI

REV 6.1

1 2 ... 31 32 33 34 35 36 37 38 39 40 41 ... 61 62

Žádné komentáře

Request AudioReQuest N.Series Manuál Strana 36