EN 60958-3:2006

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

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
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).

__________
- 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
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
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International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

– 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

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

– 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

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.

– 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.
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.

– 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.
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

– 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
State “0 0” Mode 0, refer to 5.2.2
All other states of bits 6 and 7 are reserved and shall not be used until further
defined.
The contents of bits 8 to 191 depend on the mode as indicated by bits 6 and 7. If not defined
otherwise, the default value is “0”.

60958-3  IEC:2006(E) – 11 –
5.2.2 Mode 0 channel status format for digital audio equipment for consumer use
When the audio sample word represents linear PCM and the channel status mode is mode 0,
the channel status format shown in Table 2 should be applied.
Table 2 – Mode 0 channel status format for consumer use
Byte
0 a = “0” b = “0” c d Mode = “0 0”
bit 0 1 2 3 4 5 6 7
1 Category code
bit 8 9 10 11 12 13 14 15
2 Source number Channel number
bit 16 17 18 19 20 21 22 23
3 Sampling frequency Clock accuracy
bit 24 25 26 27 28 29 30 31
4 Word length Original sampling frequency
bit 32 33 34 35 36 37 38 39
5 CGMS-A
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

– 12 – 60958-3  IEC:2006(E)
Byte 0 as defined in 5.2.1, with
Bit 1 “0” Audio sample word represents linear PCM samples
Bits 6 to 7 “0 0” Mode 0
Byte 1: Category code
The category code indicates the kind of equipment that generates the digital audio interface
signal. See the relevant annexes for the assignments. Bit 8 = LSB, bit 15 = MSB.
Byte 2: Source and channel number
Bits 16 to 19 Source number, bit 16 = LSB, bit 19 = MSB
Bit 16 17 18 19
State “0 0 0 0” Do not take into account
“1 0 0 0” 1
“0 1 0 0” 2
“1 1 0 0” 3
............
“1 1 1 1” 15
Bits 20 to 23 Channel number (audio channel), bit 20 = LSB, bit 23 = MSB.
Bit 20 21 22 23
State “0 0 0 0” Do not take into account.
“1 0 0 0” (left channel for stereo channel format)
“0 1 0 0” (right channel for stereo channel format)
“1 1 0 0”
................
“1 1 1 1”
NOTE 1 The single and dual channel operating modes are defined with the frame format in IEC 60958-1.
Byte 3: Sampling frequency and clock accuracy
Bits 24 to 27 Sampling frequency
Bit 24 25 26 27
State “0 0 1 0” 22,05 kHz
“0 0 0 0” 44,1 kHz
“0 0 0 1” 88,2 kHz
“0 0 1 1” 176,4 kHz
“0 1 1 0” 24 kHz
“0 1 0 0” 48 kHz
“0 1 0 1” 96 kHz
“0 1 1 1” 192 kHz
“1 1 0 0” 32 kHz
“1 0 0 0” Sampling frequency not indicated
“1 0 0 1” 768 kHz
All other combinations are reserved and shall not be used until further
defined.
60958-3  IEC:2006(E) – 13 –
Bits 28 to 29 Clock accuracy.
Bit 28 29
State “0 0” Level II
“1 0” Level I
“0 1” Level III
“1 1” Interface frame rate not matched to sampling frequency.
NOTE 2 The sampling frequency over 192 kHz is not actual, it is used for high bit-rate transmission using the
IEC 60958 protocol. For example, IEC 61883-6 can transmit a high bit rate of IEC 61937 using IEC 60958
comformant data format defined in IEC 61883-6.
Byte 4: Word length and original sampling frequency
Bit 32 “0” Maximum audio sample word length is 20 bits
“1” Maximum audio sample word length is 24 bits

Bits 33 to 35 Sample word length
Bit 33 34 35 Audio sample word length if Audio sample word length if
maximum length is 24 bits as maximum length is 20 bits as
indicated by bit 32 indicated by bit 32
State “0 0 0” Word length not indicated Word length not indicated
(default) (default)
“1 0 0” 20 bits 16 bits
“0 1 0” 22 bits 18 bits
“0 0 1” 23 bits 19 bits
“1 0 1” 24 bits 20 bits
“0 1 1” 21 bits 17 bits
All other combinations are reserved and shall not be used until further
defined.
NOTE 3 The first edition of IEC 60958 had bits 32 to 35 reserved and set to zero. Therefore, the all zero state for
these bits on a received signal may be an indicator that the word length indication has not been implemented.
Bits 36 to 39 Original sampling frequency
Bit 36 37 38 39
State “1 1 1 1” 44,1 kHz
“1 1 1 0” 88,2 kHz
“1 1 0 1” 22,05 kHz
“1 1 0 0” 176,4 kHz
“1 0 1 1” 48 kHz
“1 0 1 0” 96 kHz
“1 0 0 1” 24 kHz
“1 0 0 0” 192 kHz
“0 1 1 1” Reserved
“0 1 1 0” 8 kHz
“0 1 0 1” 11,025 kHz
“0 1 0 0” 12 kHz
“0 0 1 1” 32 kHz
“0 0 1 0” Reserved
“0 0 0 1” 16 kHz
“0 0 0 0” Original sampling frequency not indicated (default)

– 14 – 60958-3  IEC:2006(E)
NOTE 4 The original sampling frequency field may be used to indicate the sampling frequency of a signal prior to
sampling frequency conversion in a consumer playback system.
NOTE 5 Many of the values indicated for a frequency in the original sampling frequency field in byte 4 are
complementary to the values used for that frequency in the sampling frequency field in byte 3.
Byte 5: CGMS-A
Bits 40 to 41 CGMS-A
Bit 40 41
State “0 0” Copying is permitted without restriction
“0 1” Condition not be used
“1 0” One generation of copies may be made
“1 1” No copying is permitted
NOTE 6 CGMS-A information from other IEC standards (for example, IEC 61880) can be carried.
5.3 Copyright management guidelines for consumer application of the digital
audio interface
5.3.1 General
Category codes are used for all consumer products that are capable of supplying a digital
signal to consumer digital audio recorders, except for products that are fully transparent from
input to output. A category code of a product is defined as a live function to make a source
data. If products have the capability to play plural recorded media that are defined in different
categories, the category code of the product should be defined as a playing medium.
These category codes have been grouped by general function of the product. This makes it
possible to take into account future digital recording products not yet defined in detail. Such a
product then deals with the group code under a general rule. These rules define whether a
digital recorder is enabled to record a copyright-protected digital signal.
Unless otherwise specified, any consumer equipment capable of transferring digital audio
information from an input terminal to an output terminal, if not fully transparent and regardless
of the delay or kind of transformation of the audio content of the signal, shall copy channel
status bits 0, 1, 3, 4, 5, 6 and 7 from the source. Bit 2 shall be copied from the source, unless
otherwise specified in the annexes.
Bit 15 is referred to as the “L-bit”. It indicates the “generation status” of the digital audio signal.
“Generation status” means:
• whether the signal emanates from a source that has been produced or published or
authorized by the rights owner of the material, such as commercially released pre-recorded
compact discs or DAT tapes or a digital broadcast (referred to herein as “original”) and for
which copyright has been asserted; or
• whether the signal emanates from a recording made from such “original” material (i.e. “a
home-copy of generation 1 or higher”).
Generally the L-bit is specified as:
Bit 15 “0” No indication
“1” Commercially released pre-recorded software
For historical reasons, the reverse situation is valid for the signals originating from
• laser optical products (category code “100 XXXXL”);
• broadcast reception (category codes “001 XXXXL” and “011 1XXXL”).

60958-3  IEC:2006(E) – 15 –
For these category codes the L-bit indicates:
Bit 15 “0” Commercially released pre-recorded software
“1” No indication
The generation status may be unknown for certain applications. The above interpretation is
therefore not valid in combination with some category codes such as
• general (category code “000 00000”);
• analogue/digital converters for analogue signals without copyright information (category
code “011 00XXL”).
5.3.2 Category code groups
5.3.2.1 The category code groups are defined in Table 3.
Table 3 – Category code groups
Bits 8 to 15 Category
“000 00000” General. Used temporarily
“100 XXXXL” Laser optical products
“010 XXXXL” Digital/digital converters and signal processing products
“110 XXXXL” Magnetic tape or disc-based products
“001 XXXXL” Broadcast reception of digitally encoded audio signals with or without video signals
and
“011 1XXXL”
“101 XXXXL” Musical instruments, microphones and other sources without copyright information
“011 00XXL” Analogue/digital converters for analogue signals without copyright information
“011 01XXL” Analogue/digital converters for analogue signals which include copyright information
in the form of “Cp-bit and L-bit status”
“000 1XXXL” Solid-state memory-based products
“000 0001L” Experimental products not for commercial sale
“000 0001L” Other products of this groups and/or experimental products
“111 XXXXL” Not defined. Reserved
“000 0XXXL” Not defined. Reserved, except for “000 00000” and “000 0001L”

5.3.2.2 Within a group a further indication of the kind of source is given.
5.3.2.2.1 For the general category code (“000 00000”) the following applies:
– used temporarily;
– applied specifically for digital audio broadcast reception with or without a video signal, for
example, digital satellite reception in Japan in the case where no copyright information is
transmitted (see also Annex H);
– for the group of laser optical products (category code = “100 XXXXL”), the category codes
are defined in Table 4.
– 16 – 60958-3  IEC:2006(E)
Table 4 – Category code groups for laser optical products
Bits 8 to 15 Category
“100 00000” Compact-disc digital audio signal compatible with IEC 60908 (see Annex A)
“100 1000L” Laser optical digital audio systems for which no other category code is defined (see
Annex D)
“100 1001L” Mini-disc system (see Annex N)
“100 1100L” Digital versatile disc (DVD) (see Annex P)
“100 1111L” Other products of this category
“100 others” Reserved
5.3.2.2.2 For the group of digital/digital converters and signal-processing products
(category code = “010 XXXXL”), the category codes are defined in Table 5.
Table 5 – Category code groups for digital/digital converter
and signal-processing products
Bits 8 to 15 Category
“010 0000L” PCM encoder/decoder (see Annex B)
“010 0100L” Digital signal mixer (see Annex E)
“010 1100L” Sampling rate converter (see Annex F)
“010 0010L” Digital sound sampler (see Annex G)
“010 1010L” Digital sound processor (see Annex O)
“010 1111L” Other products of this category
“010 others” Reserved
5.3.2.2.3 For the group of magnetic tape or magnetic disc based products (category code
= “110 XXXXL”), the category codes are defined in Table 6.
Table 6 – Category code groups for magnetic tape or magnetic disc based products
Bits 8 to 15 Category
“110 0000L” DAT (see annex C)
“110 1000L” Video tape recorder with digital sound
“110 0001L” Digital compact cassette (see Annex M)
“110 1100L” Magnetic disc digital audio system (see Annex R)
“110 1111L” Other products of this category
“110 others” Reserved
60958-3  IEC:2006(E) – 17 –
5.3.2.2.4 For the group of broadcast reception of digitally encoded audio with/without
video signals (category code = “001 XXXXL” or “011 1XXXL”), the category
codes are defined in Table 7.
Table 7 – Category code groups for broadcast reception of digitally encoded audio
with/without video signals
Bits 8 to 15 Category
“001 0000L” Digital audio broadcast signal with or without a video signal (Japan) (see Annex H)
“001 1000L” Digital audio broadcast signal with or without a video signal (Europe) (see Annex J)
“001 0011L” Digital audio broadcast signal with or without a video signal (USA) (see Annex K)
"001 0001L" Electronic software delivery (see Annex L)
“001 0010L” Used by another standard (see note)
“001 1111L” Other products of this category
“001 others” Reserved
“011 1XXXL” Reserved
NOTE The code "001 0010L" is under consideration for use in connection with IEC 62105.

5.3.2.2.5 For the group of musical instruments, microphones and other sources that
create original sound (category code = “101 XXXXL”), the category codes are
defined in Table 8.
Table 8 – Category code groups for musical instruments, microphones and
other sources that create original sound
Bits 8 to 15 Category
“101 0000L” Synthesizer
“101 1000L” Microphone
“101 1111L” Other products of this category
“101 others” Reserved
5.3.2.2.6 For the group of analogue/digital converters for analogue signals without
copyright information (category code = “011 00XXL”), the category codes are
defined in Table 9.
Table 9 – Category code groups for A/D converters for analogue signals
without copyright information
Bits 8 to 15 Category
“011 0000L” A/D converter
“011 0011L” Other products of this category
“011 00 others” Reserved
– 18 – 60958-3  IEC:2006(E)
5.3.2.2.7 For the group of analogue/digital converters for analogue signals which include
copyright information in the form of “Cp-bit and L-bit status” (category code =
“011 01XXL”), the category codes are defined in Table 10.
Table 10 – Category code groups for A/D converters for analogue signals
with copyright information
Bits 8 to 15 Category
“011 0100L” A/D converter
“011 0111L” Other products of this category
“011 01 others Reserved
5.3.2.2.8 For the group of solid state memory based products (category code = “000
1XXXL”), the category codes are defined in Table 11.
Table 11 – Category code groups for solid state memory based products
Bits 8 to 15 Category
“000 1000L" Digital audio recorder and player using solid state memory
“000 1111L” Ot
...