Request AudioReQuest N.Series manuály

Request AudioReQuest N.Series Manuál (62 strany)

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USB Audio Design Guide

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SYNOPSIS

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Table of Contents

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1 Overview

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2 Hardware Platforms

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3 Software Architecture

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3.2 Binary Naming

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3.4 USB Audio Class Support

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3.5 USB Interface

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3.5.2 Startup/Enumeration

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3.5.3 Reset

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3.6.1 Endpoint Buﬀer

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3.6.2 Decoupler

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3.6.3 Audio Buﬀering Scheme

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NUM_USB_CHAN_OUT

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NUM_USB_CHAN_IN

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3.8 Audio Driver

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Figure 12:

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Ports and

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(CODEC slave)

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3.9 Digital Mixer

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3.9.1 Control

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3.9.2 Host Control

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3.10 S/PDIF Transmit

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3.10.1 Clocking

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3.10.2 Usage

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3.11 S/PDIF Receive

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3.11.1 Integration

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3.12 ADAT Receive

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3.13 Clock Recovery

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3.14 MIDI

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3.17 Resource Usage

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· S/PDIF Transmitter or MIDI

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3.18.1 Port 32A

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3.18.2 Clocking

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Codec

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3.18.3 HID

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- D SPDIF =0

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- D MIDI =1

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- DAUDIO_CLASS =1

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3.19.2 CODEC Conﬁguration

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3.19.3 U-Series ADC

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3.19.4 HID Example

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SPDIF as zero:

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MIDI as 1:

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-DNUM_USB_CHAN_IN=0

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Software

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//# d efine CODEC_SLAVE 1

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4 Programming Guide

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4.2 Code Structure

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4.3.1 Custom Deﬁnes

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4.3.2 Conﬁguration Functions

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4.3.3 The main program

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4.4 Adding Custom Code

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5.1 Custom Deﬁnes

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5.3 Component API

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USB Audio Design Guide 62/61

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