Digital audio interface - Part 3: Consumer applications

Specifies the consumer application of the interface for the interconnection of digital audio equipment defined in EN 60958-1.

Digitalton-Schnittstelle - Teil 3: Allgemeingebrauch

Interface audionumérique - Partie 3: Applications grand public

L'IEC 60958-3:2006 spécifie une application grand public de l'interface pour l'interconnexion des appareils audionumériques définie dans la CEI 60958-1. Cette troisième édition de la CEI 60958-3 annule et remplace la deuxième édition publiée en 2003 dont elle constitue une révision technique. Elle comporte les modifications suivantes: - Les exigences électriques et optiques ont été supprimées de la CEI 60958-3; - il convient de les spécifier dans la CEI 60958-1. La troisième édition de la CEI 60958-1 comportera ces exigences. La présente version bilingue (2014-07) correspond à la version anglaise monolingue publiée en 2006-05.

Digitalni zvokovni vmesnik - 3. del: Porabniške aplikacije (IEC 60958-3:2006)

Ta del IEC 60958 določa vmesnik porabniške aplikacije za medomrežno povezovanje digitalne zvokovne opreme, opredeljene v IEC 60958-1.

General Information

Status
Published
Publication Date
12-Oct-2006
Current Stage
6060 - Document made available
Due Date
13-Oct-2006
Completion Date
13-Oct-2006

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SLOVENSKI STANDARD
SIST EN 60958-3:2007
01-januar-2007
1DGRPHãþD
SIST EN 60958-3:2003
Digitalni zvokovni vmesnik - 3. del: Porabniške aplikacije (IEC 60958-3:2006)
Digital audio interface -- Part 3: Consumer applications
Digitalton-Schnittstelle -- Teil 3: Allgemeingebrauch
Interface audionumérique -- Partie 3: Applications grand public
Ta slovenski standard je istoveten z: EN 60958-3:2006
ICS:
33.160.30 Avdio sistemi Audio systems
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
SIST EN 60958-3:2007 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 60958-3:2007
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SIST EN 60958-3:2007
EUROPEAN STANDARD
EN 60958-3
NORME EUROPÉENNE
October 2006
EUROPÄISCHE NORM
ICS 33.160.01 Supersedes EN 60958-3:2003
English version
Digital audio interface
Part 3: Consumer applications
(IEC 60958-3:2006)
Interface audionumérique Digitalton-Schnittstelle
Partie 3: Applications grand public Teil 3: Allgemeingebrauch
(CEI 60958-3:2006) (IEC 60958-3:2006)

This European Standard was approved by CENELEC on 2006-10-01. 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 Central Secretariat or to any CENELEC member.

This European Standard exists in two official versions (English, 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 Central

Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech

Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,

Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60958-3:2006 E
---------------------- Page: 3 ----------------------
SIST EN 60958-3:2007
EN 60958-3:2006 - 2 -
Foreword

The text of the International Standard IEC 60958-3:2006, prepared by IEC TC 100, Audio, video and

multimedia systems and equipment, was submitted to the formal vote and was approved by

CENELEC as EN 60958-3 on 2006-10-01 without any modification.
This European Standard supersedes EN 60958-3:2003.
It includes the following significant technical changes :

– Electrical and optical requirements are removed from EN 60958-3; they will be specified in the

next edition of EN 60958-1.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2007-10-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2009-10-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice

The text of the International Standard IEC 60958-3:2006 was approved by CENELEC as a European

Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards

indicated:
IEC 60958-4 NOTE Harmonized as EN 60958-4:2003 (not modified).
IEC 61883-6 NOTE Harmonized as EN 61883-6:2005 (not modified).
IEC 61937 NOTE Harmonized in EN 61937 series (not modified).
__________
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SIST EN 60958-3:2007
- 3 - EN 60958-3:2006
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application of this document. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies.

NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD

applies.
Publication Year Title EN/HD Year
IEC 60841 1988 Audio recording - PCM encoder/decoder HD 544 S1 1989
system
IEC 60908 1999 Audio recording - Compact disc digital audio EN 60908 1999
system
IEC 60958-1 2004 Digital audio interface EN 60958-1 2004
Part 1: General
IEC 61119-1 1992 Digital audio tape cassette system (DAT) EN 61119-1 1994
Part 1: Dimensions and characteristics
IEC 61119-6 1992 Digital audio tape cassette system (DAT) EN 61119-6 1994
Part 6: Serial copy management system
IEEE 1394 2004 IEEE standard for high-performance serial - -
bus bridges
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SIST EN 60958-3:2007
---------------------- Page: 6 ----------------------
SIST EN 60958-3:2007
INTERNATIONAL IEC
STANDARD 60958-3
Third edition
2006-05
Digital audio interface –
Part 3:
Consumer applications
 IEC 2006  Copyright - all rights reserved

No part of this publication may be reproduced or utilized in any form or by any means, electronic or

mechanical, including photocopying and microfilm, without permission in writing from the publisher.

International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland

Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch

PRICE CODE
Commission Electrotechnique Internationale XB
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue
---------------------- Page: 7 ----------------------
SIST EN 60958-3:2007
– 2 – 60958-3  IEC:2006(E)
CONTENTS

FOREWORD...........................................................................................................................5

1 Scope...............................................................................................................................7

2 Normative references .......................................................................................................7

3 Terms and definitions .......................................................................................................7

4 Interface format ................................................................................................................7

5 Channel status .................................................................................................................8

5.1 General ...................................................................................................................8

5.2 Application ..............................................................................................................8

5.3 Copyright management guidelines for consumer application of the digital

audio interface ......................................................................................................14

6 User data .......................................................................................................................18

6.1 General .................................................................................................................18

6.2 Application ............................................................................................................18

6.3 Information for synchronization..............................................................................22

Annex A (normative) Application of the digital audio interface in the compact disc

digital audio system ..............................................................................................................25

Annex B (normative) Application of the digital interface in the 2-channel PCM

encoder/decoder...................................................................................................................27

Annex C (normative) Application of the digital interface in the 2-channel digital audio

tape recorder in the consumer mode.....................................................................................28

Annex D (normative) Application of the digital interface in laser optical digital audio

systems for which no other category code is defined.............................................................32

Annex E (normative) Application of the digital interface in a digital audio mixer in the

consumer mode ....................................................................................................................33

Annex F (normative) Application of the digital interface with a sampling rate converter

in the consumer mode...........................................................................................................34

Annex G (normative) Application of the digital interface with a digital sound sampler

in the consumer mode...........................................................................................................35

Annex H (normative) Application of the digital interface in a digital broadcast receiver

(Japan) in the consumer mode..............................................................................................36

Annex J (normative) Application of the digital interface in a digital broadcast receiver

(Europe) in the consumer mode ............................................................................................37

Annex K (normative) Application of the digital interface in a digital broadcast receiver

(USA) in the consumer mode ................................................................................................38

Annex L (normative) Application of the digital interface for electronic software delivery

in the consumer mode...........................................................................................................39

Annex M (normative) Application of the digital interface in the digital compact cassette

system in the consumer mode...............................................................................................40

Annex N (normative) Application of the digital interface in the mini-disc system in the

consumer mode ....................................................................................................................45

Annex O (normative) Application of the digital interface in a digital sound processor in

the consumer mode ..............................................................................................................46

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SIST EN 60958-3:2007
60958-3  IEC:2006(E) – 3 –

Annex P (normative) Application of the digital interface in the digital versatile disc

system (DVD) in the consumer mode ....................................................................................47

Annex Q (informative) Use of original sampling frequency, sampling frequency and

clock accuracy ......................................................................................................................48

Annex R (normative) Application of the digital interface in magnetic disc digital audio

systems in the consumer mode.............................................................................................50

Annex S (normative) Explanations of category code implementation....................................51

Annex T (informative) Application of the digital audio interface for synchronization of

audio, video and multi-media equipments .............................................................................56

Bibliography..........................................................................................................................61

Figure 1 – Example of message structure using information units .........................................19

Figure 2 – First UI contents...................................................................................................20

Figure 3 – Second UI contents..............................................................................................20

Figure 4 – Third UI contents .................................................................................................21

Figure 5 – User information...................................................................................................21

Figure 6 – SMPTE time code information ..............................................................................22

Figure 7 – LTC information alignment ...................................................................................22

Figure 8 – VITC information alignment ..................................................................................23

Figure 9 – Latency information..............................................................................................23

Figure 10 – Latency information alignment............................................................................24

Figure C.1 – Example of different combinations of start-ID and shortening-ID.......................31

Figure Q.1 – Player and interface model ...............................................................................48

Figure S.1 – Multi-media player ............................................................................................51

Figure S.2 – Home-recorded medium player .........................................................................52

Figure S.3 – Direct monitoring ..............................................................................................52

Figure S.4 – Monitoring after recording .................................................................................53

Figure S.5 – Integrated product ............................................................................................53

Figure S.6 – Digital/digital converter .....................................................................................54

Figure S.7 – Integrated product including digital/digital converter..........................................54

Figure S.8 – Integrated product including magnetic disc recorder .........................................55

Figure T.1 – Lip-sync system model......................................................................................56

Figure T.2 – Lip-sync compensation .....................................................................................57

Figure T.3 – Time-code transmission ....................................................................................57

Figure T.4 – Latency parameter transmission .......................................................................58

Figure T.5 – Latency parameter transmission with TLv..........................................................58

Figure T.6 – Example of latency parameter transmission ......................................................59

Figure T.7 – Another example for solving lip-sync problems..................................................60

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SIST EN 60958-3:2007
– 4 – 60958-3  IEC:2006(E)

Table 1– Channel status general format for consumer use......................................................9

Table 2 – Mode 0 channel status format for consumer use....................................................11

Table 3 – Category code groups ...........................................................................................15

Table 4 – Category code groups for laser optical products ....................................................16

Table 5 – Category code groups for digital/digital converter and signal-processing

products ...............................................................................................................................16

Table 6 – Category code groups for magnetic tape or magnetic disc based products ............16

Table 7 – Category code groups for broadcast reception of digitally encoded audio

with/without video signals .....................................................................................................17

Table 8 – Category code groups for musical instruments, microphones and other

sources that create original sound ........................................................................................17

Table 9 – Category code groups for A/D converters for analogue signals without

copyright information ............................................................................................................17

Table 10 – Category code groups for A/D converters for analogue signals with

copyright information ............................................................................................................18

Table 11 – Category code groups for solid-state memory-based products.............................18

Table A.1 – Example of 2-channel compact disc format ........................................................26

Table C.1 – Use of Cp-bit, L-bit and category code for DAT ..................................................28

Table C.2 – User data application in the DAT system............................................................30

Table M.1 – Layout of message number “000000”.................................................................41

Table M.2 – Deck status codes .............................................................................................42

Table M.3 – ITTS packet extended message example...........................................................43

Table Q.1 – Term definitions.................................................................................................48

Table Q.2 – Cases ................................................................................................................49

Table Q.3 – Example ............................................................................................................49

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SIST EN 60958-3:2007
60958-3  IEC:2006(E) – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIGITAL AUDIO INTERFACE –
Part 3: Consumer applications
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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any

equipment declared to be in conformity with an IEC Publication.

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 60958-3 has been prepared by IEC technical committee 100:

Audio, video and multimedia systems and equipment.

This third edition of IEC 60958-3 cancels and replaces the second edition published in 2003

and constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition.

– Electrical and optical requirements are removed from IEC 60958-3; they should be

specified in IEC 60958-1. The third edition of IEC 60958-1 will include these.
---------------------- Page: 11 ----------------------
SIST EN 60958-3:2007
– 6 – 60958-3  IEC:2006(E)
The text of this standard is based on the following documents:
CDV Report on voting
100/1009/CDV 100/1070/RVC

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

The list of all the parts of the IEC 60958 series, under the general title Digital audio interface,

can be found on the IEC website.

The committee has decided that the contents of this publication will remain unchanged until

the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in

the data related to the specific publication. At this date, the publication will be

• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
---------------------- Page: 12 ----------------------
SIST EN 60958-3:2007
60958-3  IEC:2006(E) – 7 –
DIGITAL AUDIO INTERFACE –
Part 3: Consumer applications
1 Scope

This part of IEC 60958 specifies the consumer application of the interface for the inter-

connection of digital audio equipment defined in IEC 60958-1.

NOTE When used in a consumer digital processing environment, the interface is primarily intended to carry

stereophonic programmes, with a resolution of up to 20 bits per sample, an extension to 24 bits per sample being

possible.
2 Normative references

The following referenced documents are indispensable for the application of this document.

For dated references, only the edition cited applies. For undated references, the latest edition

of the referenced document (including any amendments) applies.
IEC 60841:1988, Audio recording – PCM encoder/decoder system
IEC 60908:1999, Audio recording – Compact disc digital audio system
IEC 60958-1:2004, Digital audio interface – Part 1: General

IEC 61119-1:1992, Digital audio tape cassette system (DAT) – Part 1: Dimensions and

characteristics
IEC 61119-6:1992, Digital audio tape cassette system (DAT) – Part 6: Serial copy
management system
IEEE 1394:2004, IEEE standard for high-performance serial bus bridges
3 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 60958-1 apply.

4 Interface format
The interface format as defined in IEC 60958-1 shall be used.

Unless otherwise specified in the annexes, the following specification is applicable.

• Audio sample word has a length of 20 bits/sample. The auxiliary sample bits are an

optional expansion of the audio sample, if not used = “0”.
• User data is not used, all bits = “0”.

• Channel status is identical for both subframes of the interface, with the exception of the

channel number, if that is not equal to zero.
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SIST EN 60958-3:2007
– 8 – 60958-3  IEC:2006(E)
5 Channel status
5.1 General

For every subframe, the channel status bit provides information related to the audio channel

that is carried in that same subframe.

Channel status information is organized in a 192-bit block, subdivided into 24 bytes,

numbered 0 to 23 (see Table 1). The first bit of each channel status block is carried in the

frame with preamble “B”.
The individual bits of a channel status block are numbered 0 to 191.
The primary application is indicated by channel status bit 0.

As stated in IEC 60958-1, for the consumer digital audio applications described in this

standard, this first channel status bit equals “0”.

NOTE As stated in IEC 60958-1, for professional application this first channel status bit equals “1”.

Secondary applications may be defined within the framework of these primary applications.

5.2 Application
5.2.1 Channel status general format

For each channel, the channel status block provides the information described in this clause

and summarized in Table1.
---------------------- Page: 14 ----------------------
SIST EN 60958-3:2007
60958-3  IEC:2006(E) – 9 –
Table 1– Channel status general format for consumer use
Byte
0 a = “0” b c d Mode
bit 0 1 2 3 4 5 6 7
bit 8 9 10 11 12 13 14 15
bit 16 17 18 19 20 21 22 23
bit 24 25 26 27 28 29 30 31
bit 32 33 34 35 36 37 38 39
bit 40 41 42 43 44 45 46 47
bit 48 49 50 51 52 53 54 55
bit 56 57 58 59 60 61 62 63
bit 64 65 66 67 68 69 70 71
bit 72 73 74 75 76 77 78 79
bit 80 81 82 83 84 85 86 87
bit 88 89 90 91 92 93 94 95
bit 96 97 98 99 100 101 102 103
bit 104 105 106 107 108 109 110 111
bit 112 113 114 115 116 117 118 119
bit 120 121 122 123 124 125 126 127
bit 128 129 130 131 132 133 134 135
bit 136 137 138 139 140 141 142 143
bit 144 145 146 147 148 149 150 151
bit 152 153 154 155 156 157 158 159
bit 160 161 162 163 164 165 166 167
Bit 168 169 170 171 172 173 174 175
Bit 176 177 178 179 180 181 182 183
Bit 184 185 186 187 188 189 190 191
a: use of channel status block c: copyright information
b: linear PCM identification d: additional format information
---------------------- Page: 15 ----------------------
SIST EN 60958-3:2007
– 10 – 60958-3  IEC:2006(E)
Byte 0: General control and mode information
Control:
Bit 0 “0” Consumer use of channel status block (Notes 1 and 2)

NOTE 1 The significance of byte 0, bit 0 is such that transmission from an interface conforming to IEC 60958-4

can be identified.
Bit 1 “0” Audio sample word represents linear PCM samples (Note 2)
“1” Audio sample word used for other purposes
NOTE 2 The functions of channel status bits 0 and 1 are defined in IEC 60958-1.
Bit 2 “0” Software for which copyright is asserted (Note 3)
“1” Software for which no copyright is asserted

NOTE 3 Bit 2 is referred to as the “Cp-bit”. It should indicate whether copyright protection has been asserted.

The copyright status may be unknown for certain applications. The above interpretation is

therefore not valid in combination with some category codes (as indicated in the annex

associated with the category code). The Cp-bit can alternate between 0 and 1 at a rate

between 4 Hz and 10 Hz (see Annex A).
Bits 3 Additional format information, meaning depends on bit 1.
to 5
When bit 1 = “0”, linear PCM audio mode:
Bit 3 4 5
State “0 0 0” 2 audio channels without pre-emphasis
“1 0 0”
2 audio channels with 50 µs /15 µs pre-emphasis
“0 1 0” Reserved (for 2 audio channels with pre-emphasis)
“1 1 0” Reserved (for 2 audio channels with pre-emphasis)

All other states of bits 3 to 5 are reserved and shall not be used until further

defined.

NOTE 4 The single and dual channel operating modes are defined with the frame format in IEC 60958-1.

When bit 1 = “1”, other than linear PCM applications:
Bit 3 4 5
State “0 0 0” Default state for applications other than linear PCM

All other states of bits 3 to 5 are reserved and shall not be used until further

defined.

Bits 6 Channel status mode, indicates one of four possible channel status formats

and 7 (bytes 1 to 23). There are four possible modes for each of the states of bit 1.

Bit 6 7
...

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