SIST EN IEC 62680-1-5:2020
(Main)Universal serial bus interfaces for data and power - Part 1-5: Common components - USB Audio 3.0 Device Class Definition (IEC 62680-1-5:2019)
Universal serial bus interfaces for data and power - Part 1-5: Common components - USB Audio 3.0 Device Class Definition (IEC 62680-1-5:2019)
The Audio Device Class Definition applies to all devices or functions embedded in composite devices that are
used to manipulate audio, voice, and sound-related functionality. This includes both audio data (analog and
digital) and the functionality that is used to directly control the audio environment, such as Volume and Tone
Control. The Audio Device Class does not include functionality to operate transport mechanisms that are
related to the reproduction of audio data, such as tape transport mechanisms or CD-ROM drive control.
Schnittstellen des Universellen Seriellen Busses für Daten und Energie - Teil 1-5: Gemeinsame Komponenten - USB Audio 3.0 Geräteklassendefinition (IEC 62680-1-5:2019)
Interfaces de bus universel en série pour les données et l'alimentation électrique - Partie 1-5: Composants communs - Définition de classes de dispositifs USB Audio 3.0 (IEC 62680-1-5:2019)
L'IEC 62680-1-5:2019 décrit les capacités et caractéristiques minimales qu'un dispositif audio doit prendre en charge pour être conforme à l'USB. Le présent document fournit également des recommandations concernant les fonctionnalités facultatives.
La définition de classes de dispositifs audio s'applique à tous les dispositifs ou fonctions intégrés dans des dispositifs composites qui sont utilisés pour manipuler des fonctionnalités audio, vocales et sonores. Cela inclut à la fois les données audio (analogiques et numériques) et les fonctionnalités utilisées pour contrôler directement l'environnement audio, comme les commandes de volume et de tonalité. La classe des dispositifs audio n'inclut pas de fonctionnalité permettant d'utiliser des mécanismes de transport liés à la reproduction de données audio, comme les mécanismes de transport de bande ou la commande d'un lecteur de CD-ROM.
Vmesniki univerzalnega serijskega vodila za prenos podatkov in napajanje - 1-5. del: Skupne komponente - Definicija tipa naprave USB Avdio 3.0 (IEC 62680-1-5:2019)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN IEC 62680-1-5:2020
01-julij-2020
Vmesniki univerzalnega serijskega vodila za prenos podatkov in napajanje - 1-5.
del: Skupne komponente - Definicija tipa naprave USB Avdio 3.0 (IEC 62680-1-
5:2019)
Universal serial bus interfaces for data and power - Part 1-5: Common components -
USB Audio 3.0 Device Class Definition (IEC 62680-1-5:2019)
Schnittstellen des Universellen Seriellen Busses für Daten und Energie - Teil 1-5:
Gemeinsame Komponenten - USB Audio 3.0 Geräteklassendefinition (IEC 62680-1-
5:2019)
Interfaces de bus universel en série pour les données et l'alimentation électrique - Partie
1-5: Composants communs - Définition de classes de dispositifs USB Audio 3.0 (IEC
62680-1-5:2019)
Ta slovenski standard je istoveten z: EN IEC 62680-1-5:2019
ICS:
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
SIST EN IEC 62680-1-5:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN IEC 62680-1-5:2020
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SIST EN IEC 62680-1-5:2020
EUROPEAN STANDARD EN IEC 62680-1-5
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2019
ICS 33.120.20; 35.200; 29.200
English Version
Universal serial bus interfaces for data and power - Part 1-5:
Common components - USB Audio 3.0 device class definition
(IEC 62680-1-5:2019)
Interfaces de bus universel en série pour les données et Schnittstellen des Universellen Seriellen Busses für Daten
l'alimentation électrique - Partie 1-5: Composants communs und Energie - Teil 1-5: Gemeinsame Komponenten - USB
- Définition de classes de dispositifs USB Audio 3.0 Audio 3.0 Geräteklassendefinition
(IEC 62680-1-5:2019) (IEC 62680-1-5:2019)
This European Standard was approved by CENELEC on 2019-10-24. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62680-1-5:2019 E
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SIST EN IEC 62680-1-5:2020
EN IEC 62680-1-5:2019 (E)
European foreword
The text of document 100/3157/CDV, future edition 1 of IEC 62680-1-5, prepared by IEC/TC 100
"Audio, video and multimedia systems and equipment" was submitted to the IEC-CENELEC parallel
vote and approved by CENELEC as EN IEC 62680-1-5:2019.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2020-07-24
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-10-24
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 62680-1-5:2019 was approved by CENELEC as a
European Standard without any modification.
2
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SIST EN IEC 62680-1-5:2020
IEC 62680-1-5
®
Edition 1.0 2019-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Universal serial bus interfaces for data and power –
Part 1-5: Common components – USB Audio 3.0 device class definition
Interfaces de bus universel en série pour les données et l'alimentation
électrique –
Partie 1-5: Composants communs – Définition de classes de dispositifs USB
Audio 3.0
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.120.20; 35.200; 29.200 ISBN 978-2-8322-7241-1
Warning! Make sure that you obtained this publication from an authorized distributor.
Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 5 ----------------------
SIST EN IEC 62680-1-5:2020
– 2 – IEC 62680-1-5:2019
© USB-IF:1997-2016
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
UNIVERSAL SERIAL BUS INTERFACES FOR DATA AND POWER –
Part 1-5: Common components – USB Audio 3.0 device class definition
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62680-1-5 has been prepared by technical area 18: Multimedia
home systems and applications for end-user networks, of IEC technical committee 100: Audio,
video and multimedia systems and equipment.
The text of this standard was prepared by the USB Implementers Forum (USB-IF). The
structure and editorial rules used in this publication reflect the practice of the organization
which submitted it.
The text of this International Standard is based on the following documents:
CDV Report on voting
100/3157/CDV 100/3227/RVC
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
Copyright © 1997-2016 USB Implementers Forum, Inc. All rights reserved.
---------------------- Page: 6 ----------------------
SIST EN IEC 62680-1-5:2020
IEC– 63 268– 0-1-5:2019 – 3 –
© USB-IF:1997-2016
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
Copyright © 1997-2016 USB Implementers Forum, Inc. All rights reserved.
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SIST EN IEC 62680-1-5:2020
– 4 – IEC 62680-1-5:2019
© USB-IF:1997-2016
INTRODUCTION
The IEC 62680 series is based on a series of specifications that were originally developed by the USB
Implementers Forum (USB-IF). These specifications were submitted to the IEC under the auspices of
a special agreement between the IEC and the USB-IF.
This standard is the USB-IF publication USB Device Class Definition for Audio Devices Release 3.0.
The USB Implementers Forum, Inc.(USB-IF) is a non-profit corporation founded by the group of
companies that developed the Universal Serial Bus specification. The USB-IF was formed to provide a
support organization and forum for the advancement and adoption of Universal Serial Bus technology.
The Forum facilitates the development of high-quality compatible USB peripherals (devices), and
promotes the benefits of USB and the quality of products that have passed compliance testing.
ANY USB SPECIFICATIONS ARE PROVIDED TO YOU "AS IS", WITH NO WARRANTIES
WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY, NON-INFRINGEMENT,
OR FITNESS FOR ANY PARTICULAR PURPOSE. THE USB IMPLEMENTERS FORUM AND THE
AUTHORS OF ANY USB SPECIFICATIONS DISCLAIM ALL LIABILITY, INCLUDING LIABILITY
FOR INFRINGEMENT OF ANY PROPRIETARY RIGHTS, RELATING TO USE OR
IMPLEMENTATION OR INFORMATION IN THIS SPECIFICAITON.
THE PROVISION OF ANY USB SPECIFICATIONS TO YOU DOES NOT PROVIDE YOU WITH ANY
LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL
PROPERTY RIGHTS.
Entering into USB Adopters Agreements may, however, allow a signing company to participate in a
reciprocal, RAND-Z licensing arrangement for compliant products. For more information, please see:
https://www.usb.org/documents
IEC DOES NOT TAKE ANY POSITION AS TO WHETHER IT IS ADVISABLE FOR YOU TO ENTER
INTO ANY USB ADOPTERS AGREEMENTS OR TO PARTICIPATE IN THE USB IMPLEMENTERS
FORUM.
Copyright © 1997-2016 USB Implementers Forum, Inc. All rights reserved.
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SIST EN IEC 62680-1-5:2020
IEC– 65 268– 0-1-5:2019 – 5 –
© USB-IF:1997-2016
UNIVERSAL SERIAL BUS
DEVICE CLASS DEFINITION
FOR
AUDIO DEVICES
Release 3.0
September 22, 2016
Copyright © 1997-2016 USB Implementers Forum, Inc. All rights reserved.
---------------------- Page: 9 ----------------------
SIST EN IEC 62680-1-5:2020
– 6 – IEC 62680-1-5:2019
© USB-IF:1997-2016
SCOPE OF THIS RELEASE
This document is the Release 3.0 of this Device Class Definition.
CONTRIBUTORS
Joe Scanlon Advanced Micro Devices
Rhoads Hollowell Apple Inc.
Girault Jones Apple Inc.
Matthew X. Mora Apple Inc.
Tzung-Dar Tsai C-Media Electronics, Inc.
Brad Lambert Cirrus Logic, Inc.
Dan Bogard Conexant Systems, Inc.
Pete Burgers DisplayLink (UK), Ltd.
David Roh Dolby Laboratories, Inc.
Leng Ooi Google, Inc.
Pierre-Louis Bossart Intel Corporation
David Hines Intel Corporation
Abdul Rahman Ismail (Co-Chair) Intel Corporation
Devon Worrell Intel Corporation
Chandrashekhar Rao Logitech, Inc.
Terry Moore MCCI Corporation
Alex Lin MediaTek, Inc.
Bala Sivakumar Microsoft Corporation
Geert Knapen (Co-Chair & Editor) NXP Semiconductors
PL Mobile Audio
411 E. Plumeria drive
San Jose, CA 95134, USA
E-mail: geert.knapen@nxp.com
James Goel Qualcomm, Inc.
Andre Schevciw Qualcomm, Inc.
Jin-Sheng Wang Qualcomm, Inc.
Morten Christiansen Synopsys
REVISION HISTORY
Revision Date Filename Description
1.0 Mar. 18, 98 Audio10.pdf Release 1.0
2.0 May. 31, 06 Audio20 final.pdf Release 2.0
3.0 Sep. 22, 16 Audio30.pdf Release 3.0
Copyright © 1997-2016 USB Implementers Forum, Inc. All rights reserved.
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SIST EN IEC 62680-1-5:2020
IEC– 67 268– 0-1-5:2019 – 7 –
© USB-IF:1997-2016
Copyright © 1997-2016 USB Implementers Forum, Inc.
All rights reserved.
INTELLECTUAL PROPERTY DISCLAIMER
A LICENSE IS HEREBY GRANTED TO REPRODUCE THIS SPECIFICATION FOR INTERNAL USE ONLY. NO OTHER
LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, IS GRANTED OR INTENDED HEREBY.
USB-IF AND THE AUTHORS OF THIS SPECIFICATION EXPRESSLY DISCLAIM ALL LIABILITY FOR INFRINGEMENT OF
INTELLECTUAL PROPERTY RIGHTS RELATING TO IMPLEMENTATION OF INFORMATION IN THIS SPECIFICATION.
USB-IF AND THE AUTHORS OF THIS SPECIFICATION ALSO DO NOT WARRANT OR REPRESENT THAT SUCH
IMPLEMENTATION(S) WILL NOT INFRINGE THE INTELLECTUAL PROPERTY RIGHTS OF OTHERS.
THIS SPECIFICATION IS PROVIDED “AS IS” AND WITH NO WARRANTIES, EXPRESS OR IMPLIED, STATUTORY OR
OTHERWISE. ALL WARRANTIES ARE EXPRESSLY DISCLAIMED. USB-IF, ITS MEMBERS AND THE AUTHORS OF THIS
SPECIFICATION PROVIDE NO WARRANTY OF MERCHANTABILITY, NO WARRANTY OF NON-INFRINGEMENT, NO
WARRANTY OF FITNESS FOR ANY PARTICULAR PURPOSE, AND NO WARRANTY ARISING OUT OF ANY PROPOSAL,
SPECIFICATION, OR SAMPLE.
IN NO EVENT WILL USB-IF, MEMBERS OR THE AUTHORS BE LIABLE TO ANOTHER FOR THE COST OF PROCURING
SUBSTITUTE GOODS OR SERVICES, LOST PROFITS, LOSS OF USE, LOSS OF DATA OR ANY INCIDENTAL,
CONSEQUENTIAL, INDIRECT, OR SPECIAL DAMAGES, WHETHER UNDER CONTRACT, TORT, WARRANTY, OR
OTHERWISE, ARISING IN ANY WAY OUT OF THE USE OF THIS SPECIFICATION, WHETHER OR NOT SUCH PARTY
HAD ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.
NOTE: VARIOUS USB-IF MEMBERS PARTICIPATED IN THE DRAFTING OF THIS SPECIFICATION. CERTAIN OF
THESE MEMBERS MAY HAVE DECLINED TO ENTER INTO A SPECIFIC AGREEMENT LICENSING INTELLECTUAL
PROPERTY RIGHTS THAT MAY BE INFRINGED IN THE IMPLEMENTATION OF THIS SPECIFICATION. PERSONS
IMPLEMENT THIS SPECIFICATION AT THEIR OWN RISK.
Dolby™, AC-3™, Pro Logic™ and Dolby Surround™ are trademarks of Dolby Laboratories, Inc.
All other product names are trademarks, registered trademarks, or service marks of their respective owners.
Please send comments via electronic mail to audio-chair@usb.org
Copyright © 1997-2016 USB Implementers Forum, Inc. All rights reserved.
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SIST EN IEC 62680-1-5:2020
– 8 – IEC 62680-1-5:2019
© USB-IF:1997-2016
TABLE OF CONTENTS
Scope of This Release . 6
Contributors . 6
Revision History . 6
Table of Contents . 8
List of Tables . 12
List of Figures . 14
1 Introduction . 16
1.1 Scope . 16
1.2 Purpose . 16
1.3 Related Documents . 16
1.4 Terms and Abbreviations . 16
2 Management Overview. 19
2.1 Overview of Key Differences between ADC v2.0 and v3.0 . 19
3 Functional Characteristics . 21
3.1 Introduction . 21
3.2 Basic Audio Device Definition . 23
3.3 Backwards Compatibility . 23
3.4 Audio Interface Association (AIA) and Interface Association Descriptor . 23
3.4.1 Audio Function Class . 24
3.4.2 Audio Function Subclass . 24
3.4.3 Audio Function Protocol . 24
3.5 Audio Interface Class . 24
3.6 Audio Interface Subclass . 24
3.7 Audio Interface Protocol . 25
3.8 Audio Function Category . 25
3.9 Clock Domains . 26
3.10 Power Domains . 26
3.11 Audio Synchronization Types . 26
3.11.1 Asynchronous . 26
3.11.2 Synchronous . 26
3.11.3 Adaptive . 26
3.11.4 Implications of the Different Synchronization Types . 26
3.12 Inter Channel Synchronization . 28
3.13 Audio Function Topology . 28
3.13.1 Cluster . 33
3.13.2 Input Terminal . 33
3.13.3 Output Terminal . 34
3.13.4 Mixer Unit . 35
3.13.5 Selector Unit . 35
Copyright © 1997-2016 USB Implementers Forum, Inc. All rights reserved.
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SIST EN IEC 62680-1-5:2020
IEC– 69 268– 0-1-5:2019 – 9 –
© USB-IF:1997-2016
3.13.6 Feature Unit . 36
3.13.7 Sampling Rate Converter Unit . 36
3.13.8 Effect Unit . 37
3.13.9 Processing Unit . 41
3.13.10 Extension Unit . 43
3.13.11 Clock Entities . 44
3.14 Operational Model . 45
3.14.1 AudioControl Interface . 46
3.14.2 AudioStreaming Interface . 47
3.14.3 Clock Model . 48
3.14.4 Power Domains Model . 48
3.14.5 Additional Power Considerations and Requirements . 50
3.14.6 Binding between Physical Buttons and Audio Controls . 50
4 Descriptors . 52
4.1 Standard Descriptors . 52
4.2 Class-Specific Descriptors . 52
4.2.1 Traditional Class-Specific Descriptors . 53
4.2.2 High Capability Class-Specific Descriptors . 53
4.3 Cluster Descriptor . 54
4.3.1 Cluster Descriptor Header . 55
4.3.2 Cluster Descriptor Block . 55
4.3.3 Example Cluster descriptor . 63
4.3.4 CEA-861.2 Channel Mapping . 64
4.4 Physical versus Logical Cluster . 65
4.4.1 Mapping between Physical and Logical Clusters . 65
4.5 AudioControl Interface Descriptors . 67
4.5.1 Standard AC Interface Descriptor. 67
4.5.2 Class-Specific AC Interface Descriptor . 68
4.6 AudioControl Endpoint Descriptors . 98
4.6.1 AC Control Endpoint Descriptors . 98
4.6.2 AC Interrupt Endpoint Descriptors . 98
4.7 AudioStreaming Interface Descriptors . 98
4.7.1 Standard AS Interface Descriptor . 99
4.7.2 Class-Specific AS Interface Descriptor . 99
4.7.3 Class-Specific AS Valid Frequency Range Descriptor . 100
4.8 AudioStreaming Endpoint Descriptors . 101
4.8.1 AS Isochronous Audio Data Endpoint Descriptors . 101
4.8.2 AS Isochronous Feedback Endpoint Descriptor . 102
4.9 Class-specific String descriptors . 103
5 Requests . 105
5.1 Standard Requests . 105
Copyright © 1997-2016 USB Implementers Forum, Inc. All rights reserved.
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SIST EN IEC 62680-1-5:2020
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© USB-IF:1997-2016
5.2 Class-Specific Requests . 105
5.2.1 AudioControl Requests . 106
5.2.2 AudioStreaming Requests .
...
SLOVENSKI STANDARD
oSIST prEN IEC 62680-1-5:2019
01-januar-2019
Vmesniki univerzalnega serijskega vodila za prenos podatkov in napajanje - 1-5.
del: Skupne komponente - USB Avdio 3.0 Tip naprave
Universal serial bus interfaces for data and power - Part 1-5: Common components -
USB Audio 3.0 Device Class Definition
Ta slovenski standard je istoveten z: prEN IEC 62680-1-5:2018
ICS:
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
oSIST prEN IEC 62680-1-5:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
oSIST prEN IEC 62680-1-5:2019
---------------------- Page: 2 ----------------------
oSIST prEN IEC 62680-1-5:2019
100/3157/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 62680-1-5 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2018-11-23 2019-02-15
SUPERSEDES DOCUMENTS:
IEC TA 18 : MULTIMEDIA HOME SYSTEMS AND APPLICATIONS FOR END-USER NETWORKS
SECRETARIAT: SECRETARY:
Japan Mr Keisuke Koide
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
TITLE:
Universal serial bus interfaces for data and power - Part 1-5: Common components – USB Audio
3.0 Device Class Definition
PROPOSED STABILITY DATE: 2022
NOTE FROM TC/SC OFFICERS:
Copyright © 2018 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.
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oSIST prEN IEC 62680-1-5:2019
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oSIST prEN IEC 62680-1-5:2019
100/3157/CDV – II – IEC CDV 62680-1-5 Ed 1.0 © IEC
© USB-IF:1997-2016
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
UNIVERSAL SERIAL BUS INTERFACES FOR DATA AND POWER
Part 1-5: Common components – USB Audio 3.0 Device Class Definition
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62680-1-5 has been prepared by technical area 18: Multimedia
home systems and applications for end-user networks, of IEC technical committee 100: Audio,
video and multimedia systems and equipment.
The text of this standard was prepared by the USB Implementers Forum (USB-IF). The
structure and editorial rules used in this publication reflect the practice of the organization
which submitted it.
The text of this International Standard is based on the following documents:
FDIS Report on voting
XX/XX/FDIS XX/XX/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
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© USB-IF:1997-2016
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
The National Committees are requested to note that for this document the stability date
is .
THIS TEXT IS INCLUDED FOR THE INFORMATION OF THE NATIONAL COMMITTEES AND WILL BE
DELETED AT THE PUBLICATION STAGE.
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INTRODUCTION
The IEC 62680 series is based on a series of specifications that were originally developed by the USB
Implementers Forum (USB-IF). These specifications were submitted to the IEC under the auspices of
a special agreement between the IEC and the USB-IF.
This standard is the USB-IF publication USB Device Class Definition for Audio Devices Release 3.0.
The USB Implementers Forum, Inc.(USB-IF) is a non-profit corporation founded by the group of
companies that developed the Universal Serial Bus specification. The USB-IF was formed to provide a
support organization and forum for the advancement and adoption of Universal Serial Bus technology.
The Forum facilitates the development of high-quality compatible USB peripherals (devices), and
promotes the benefits of USB and the quality of products that have passed compliance testing.
ANY USB SPECIFICATIONS ARE PROVIDED TO YOU "AS IS, "WITH NO WARRANTIES
WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY, NON-INFRINGEMENT,
OR FITNESS FOR ANY PARTICULAR PURPOSE. THE USB IMPLEMENTERS FORUM AND THE
AUTHORS OF ANY USB SPECIFICATIONS DISCLAIM ALL LIABILITY, INCLUDING LIABILITY
FOR INFRINGEMENT OF ANY PROPRIETARY RIGHTS, RELATING TO USE OR
IMPLEMENTATION OR INFORMATION IN THIS SPECIFICAITON.
THE PROVISION OF ANY USB SPECIFICATIONS TO YOU DOES NOT PROVIDE YOU WITH ANY
LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL
PROPERTY RIGHTS.
Entering into USB Adopters Agreements may, however, allow a signing company to participate in a
reciprocal, RAND-Z licensing arrangement for compliant products. For more information, please see:
https://www.usb.org/documents
IEC DOES NOT TAKE ANY POSITION AS TO WHETHER IT IS ADVISABLE FOR YOU TO ENTER
INTO ANY USB ADOPTERS AGREEMENTS OR TO PARTICIPATE IN THE USB IMPLEMENTERS
FORUM.”
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1
2 UNIVERSAL SERIAL BUS
3 DEVICE CLASS DEFINITION
4 FOR
5 AUDIO DEVICES
6 Release 3.0
7 September 22, 2016
8
Copyright © 1997-2016 USB Implementers Forum, Inc. All rights reserved.
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9 SCOPE OF THIS RELEASE
10 This document is the Release 3.0 of this Device Class Definition.
11 CONTRIBUTORS
12 Joe Scanlon Advanced Micro Devices
13 Rhoads Hollowell Apple Inc.
14 Girault Jones Apple Inc.
15 Matthew X. Mora Apple Inc.
16 Tzung-Dar Tsai C-Media Electronics, Inc.
17 Brad Lambert Cirrus Logic, Inc.
18 Dan Bogard Conexant Systems, Inc.
19 Pete Burgers DisplayLink (UK), Ltd.
20 David Roh Dolby Laboratories, Inc.
21 Leng Ooi Google, Inc.
22 Pierre-Louis Bossart Intel Corporation
23 David Hines Intel Corporation
24 Abdul Rahman Ismail (Co-Chair) Intel Corporation
25 Devon Worrell Intel Corporation
26 Chandrashekhar Rao Logitech, Inc.
27 Terry Moore MCCI Corporation
28 Alex Lin MediaTek, Inc.
29 Bala Sivakumar Microsoft Corporation
30 Geert Knapen (Co-Chair & Editor) NXP Semiconductors
31 PL Mobile Audio
32 411 E. Plumeria drive
33 San Jose, CA 95134, USA
34 E-mail: geert.knapen@nxp.com
35 James Goel Qualcomm, Inc.
36 Andre Schevciw Qualcomm, Inc.
37 Jin-Sheng Wang Qualcomm, Inc.
38 Morten Christiansen Synopsys
39 REVISION HISTORY
Revision Date Filename Description
1.0 Mar. 18, 98 Audio10.pdf Release 1.0
2.0 May. 31, 06 Audio20 final.pdf Release 2.0
3.0 Sep. 22, 16 Audio30.pdf Release 3.0
40
41
42
43
44
45
Copyright © 1997-2016 USB Implementers Forum, Inc. All rights reserved.
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46 Copyright © 1997-2016 USB Implementers Forum, Inc.
47 All rights reserved.
48
49 INTELLECTUAL PROPERTY DISCLAIMER
50 A LICENSE IS HEREBY GRANTED TO REPRODUCE THIS SPECIFICATION FOR INTERNAL USE ONLY. NO OTHER
51 LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, IS GRANTED OR INTENDED HEREBY.
52 USB-IF AND THE AUTHORS OF THIS SPECIFICATION EXPRESSLY DISCLAIM ALL LIABILITY FOR INFRINGEMENT OF
53 INTELLECTUAL PROPERTY RIGHTS RELATING TO IMPLEMENTATION OF INFORMATION IN THIS SPECIFICATION.
54 USB-IF AND THE AUTHORS OF THIS SPECIFICATION ALSO DO NOT WARRANT OR REPRESENT THAT SUCH
55 IMPLEMENTATION(S) WILL NOT INFRINGE THE INTELLECTUAL PROPERTY RIGHTS OF OTHERS.
56 THIS SPECIFICATION IS PROVIDED “AS IS” AND WITH NO WARRANTIES, EXPRESS OR IMPLIED, STATUTORY OR
57 OTHERWISE. ALL WARRANTIES ARE EXPRESSLY DISCLAIMED. USB-IF, ITS MEMBERS AND THE AUTHORS OF THIS
58 SPECIFICATION PROVIDE NO WARRANTY OF MERCHANTABILITY, NO WARRANTY OF NON-INFRINGEMENT, NO
59 WARRANTY OF FITNESS FOR ANY PARTICULAR PURPOSE, AND NO WARRANTY ARISING OUT OF ANY PROPOSAL,
60 SPECIFICATION, OR SAMPLE.
61 IN NO EVENT WILL USB-IF, MEMBERS OR THE AUTHORS BE LIABLE TO ANOTHER FOR THE COST OF PROCURING
62 SUBSTITUTE GOODS OR SERVICES, LOST PROFITS, LOSS OF USE, LOSS OF DATA OR ANY INCIDENTAL,
63 CONSEQUENTIAL, INDIRECT, OR SPECIAL DAMAGES, WHETHER UNDER CONTRACT, TORT, WARRANTY, OR
64 OTHERWISE, ARISING IN ANY WAY OUT OF THE USE OF THIS SPECIFICATION, WHETHER OR NOT SUCH PARTY
65 HAD ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.
66 NOTE: VARIOUS USB-IF MEMBERS PARTICIPATED IN THE DRAFTING OF THIS SPECIFICATION. CERTAIN OF
67 THESE MEMBERS MAY HAVE DECLINED TO ENTER INTO A SPECIFIC AGREEMENT LICENSING INTELLECTUAL
68 PROPERTY RIGHTS THAT MAY BE INFRINGED IN THE IMPLEMENTATION OF THIS SPECIFICATION. PERSONS
69 IMPLEMENT THIS SPECIFICATION AT THEIR OWN RISK.
70 Dolby™, AC-3™, Pro Logic™ and Dolby Surround™ are trademarks of Dolby Laboratories, Inc.
71 All other product names are trademarks, registered trademarks, or service marks of their respective owners.
72 Please send comments via electronic mail to audio-chair@usb.org
73
Copyright © 1997-2016 USB Implementers Forum, Inc. All rights reserved.
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74 TABLE OF CONTENTS
75 Scope of This Release . 2
76 Contributors . 2
77 Revision History . 2
78 Table of Contents . 4
79 List of Tables . 8
80 List of Figures . 10
81 1 Introduction . 12
82 1.1 Scope . 12
83 1.2 Purpose . 12
84 1.3 Related Documents . 12
85 1.4 Terms and Abbreviations . 12
86 2 Management Overview. 15
87 2.1 Overview of Key Differences between ADC v2.0 and v3.0 . 15
88 3 Functional Characteristics . 17
89 3.1 Introduction . 17
90 3.2 Basic Audio Device Definition . 19
91 3.3 Backwards Compatibility . 19
92 3.4 Audio Interface Association (AIA) and Interface Association Descriptor . 19
93 3.4.1 Audio Function Class . 20
94 3.4.2 Audio Function Subclass . 20
95 3.4.3 Audio Function Protocol . 20
96 3.5 Audio Interface Class . 20
97 3.6 Audio Interface Subclass . 20
98 3.7 Audio Interface Protocol . 21
99 3.8 Audio Function Category . 21
100 Clock Domains . 22
3.9
101 3.10 Power Domains . 22
102 3.11 Audio Synchronization Types . 22
103 3.11.1 Asynchronous . 22
104 3.11.2 Synchronous . 22
105 3.11.3 Adaptive . 22
106 3.11.4 Implications of the Different Synchronization Types . 22
107 3.12 Inter Channel Synchronization . 24
108 3.13 Audio Function Topology . 24
109 3.13.1 Cluster . 29
110 3.13.2 Input Terminal . 29
111 3.13.3 Output Terminal . 30
112 3.13.4 Mixer Unit . 31
113 3.13.5 Selector Unit . 31
Copyright © 1997-2016 USB Implementers Forum, Inc. All rights reserved.
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114 3.13.6 Feature Unit . 32
115 3.13.7 Sampling Rate Converter Unit . 32
116 3.13.8 Effect Unit . 33
117 3.13.9 Processing Unit . 37
118 3.13.10 Extension Unit . 39
119 3.13.11 Clock Entities . 40
120 3.14 Operational Model . 41
121 3.14.1 AudioControl Interface . 42
122 3.14.2 AudioStreaming Interface . 43
123 Clock Model . 44
3.14.3
124 3.14.4 Power Domains Model . 44
125 3.14.5 Additional Power Considerations and Requirements . 46
126 3.14.6 Binding between Physical Buttons and Audio Controls . 46
127 4 Descriptors . 48
128 4.1 Standard Descriptors . 48
129 4.2 Class-Specific Descriptors . 48
130 4.2.1 Traditional Class-Specific Descriptors . 49
131 4.2.2 High Capability Class-Specific Descriptors . 49
132 4.3 Cluster Descriptor . 50
133 4.3.1 Cluster Descriptor Header . 51
134 4.3.2 Cluster Descriptor Block . 51
135 4.3.3 Example Cluster descriptor . 58
136 4.3.4 CEA-861.2 Channel Mapping . 60
137 4.4 Physical versus Logical Cluster . 60
138 4.4.1 Mapping between Physical and Logical Clusters . 60
139 4.5 AudioControl Interface Descriptors . 62
140 4.5.1 Standard AC Interface Descriptor. 62
141 4.5.2 Class-Specific AC Interface Descriptor . 63
142 4.6 AudioControl Endpoint Descriptors . 91
143 4.6.1 AC Control Endpoint Descriptors . 91
144 4.6.2 AC Interrupt Endpoint Descriptors . 92
145 4.7 AudioStreaming Interface Descriptors . 92
146 4.7.1 Standard AS Interface Descriptor . 92
147 4.7.2 Class-Specific AS Interface Descriptor . 93
148 4.7.3 Class-Specific AS Valid Frequency Range Descriptor . 94
149 4.8 AudioStreaming Endpoint Descriptors . 94
150 4.8.1 AS Isochronous Audio Data Endpoint Descriptors . 94
151 AS Isochronous Feedback Endpoint Descriptor . 96
4.8.2
152 4.9 Class-specific String descriptors . 97
153 5 Requests . 99
154 5.1 Standard Requests . 99
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155 5.2 Class-Specific Requests . 99
156 5.2.1 AudioControl Requests . 100
157 5.2.2 AudioStreaming Requests . 123
158 5.2.3 Additional Requests . 125
159 6 Interrupts . 129
160 6.1 Interrupt Data Message . 129
161 6.2 Interrupt Sources . 130
162 Appendix A. Audio Device Class Codes . 131
163 A.1 Audio Function Class Code . 131
164 Audio Function Subclass Codes . 131
A.2
165 A.3 Audio Function Protocol Codes . 131
166 A.4 Audio Interface Class Code. 131
167 A.5 Audio Interface Subclass Codes . 131
168 A.6 Audio Interface Protocol Codes . 132
169 A.7 Audio Function Category Codes . 132
170 A.8 Audio Class-Specific Descriptor Types . 132
171 A.9 Cluster Descriptor Subtypes . 133
172 A.10 Cluster Descriptor Segment types . 133
173 A.11 Channel Purpose Definitions . 133
174 A.12 Channel Relationship Definit
...
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