SIST EN 300 798:2000

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digitalna zvokovna radiodifuzija (DAB) - Vmesniki za razpošiljanje - Vmesnik DIQDigital Audio Broadcasting (DAB); Distribution interfaces; Digital baseband In-phase and Quadrature (DIQ) interface33.170Televizijska in radijska difuzijaTelevision and radio broadcastingICS:Ta slovenski standard je istoveten z:EN 300 798 V1.1.13SIST EN 300 798:en01-MXQLM-3SIST EN 300 798:SLOVENSKI
STANDARD
European Telecommunications Standards Institute EN 300 798 V1.1.1 (1998-03)European Standard (Telecommunications series)Digital Audio Broadcasting (DAB);Distribution interfaces;Digital baseband In-phase and Quadrature (DIQ) interfaceEBUUEREuropean Broadcasting UnionUnion Européenne de Radio-TélévisionSIST EN 300 798:2000

EN 300 798 V1.1.1 (1998-03)2ReferenceDEN/JTC-DAB-6 (7e000ico.PDF)KeywordsDAB, digital, audio, broadcasting, interfaceETSI SecretariatPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: +33 4 92 94 42 00
Fax: +33 4 93 65 47 16Siret N° 348 623 562 00017 - NAF 742 CAssociation à but non lucratif enregistrée à laSous-Préfecture de Grasse (06) N° 7803/88Internetsecretariat@etsi.frhttp://www.etsi.frhttp://www.etsi.orgCopyright NotificationNo part may be reproduced except as authorized by written permission.The copyright and the foregoing restriction extend to reproduction in all media.© European Telecommunications Standards Institute 1998.© European Broadcasting Union 1998.All rights reserved.SIST EN 300 798:2000

EN 300 798 V1.1.1 (1998-03)3ContentsIntellectual Property Rights.4Foreword.4Introduction.51Scope.72References.73Definitions, abbreviations and symbols.73.1Definitions.73.2Abbreviations.83.3Symbols.93.3.1Numerical ranges.93.3.2Bit numbering.93.3.3Arithmetic operators.93.3.4Functions.93.3.5Constants.94Conceptual location of the DIQ interface.95General description of the DIQ signal.95.1Mathematical definition.95.2Sampling frequency and sample size.105.3Numerical range.106Details of the Digital baseband I/Q interface (DIQ).126.1General.126.2Definition of DIQ signals.126.2.1The CLK signal.126.2.2The DATA signal.126.2.3The Q/I signal.126.2.4The FSYNC signal.136.2.5Signal direction.136.3Electrical characteristics of the DIQ interface.136.3.1General.136.3.2Logic convention.146.3.3Line driver characteristics (source).146.3.4Line receiver characteristics (destination).146.4Pin allocation of the DIQ signals.156.5Timing relationships.156.6CLK timing jitter.16Annex A (informative):Bibliography.17History.18SIST EN 300 798:2000

EN 300 798 V1.1.1 (1998-03)4Intellectual Property RightsIPRs essential or potentially essential to the present document may have been declared to ETSI. The informationpertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be foundin ETR 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect ofETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on the ETSIWeb server (http://www.etsi.fr/ipr).Pursuant to the ETSI Interim IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. Noguarantee can be given as to the existence of other IPRs not referenced in ETR 314 (or the updates onhttp://www.etsi.fr/ipr) which are, or may be, or may become, essential to the present document.ForewordThis European Standard (Telecommunications series) has been produced by the Joint Technical Committee (JTC) of theEuropean Broadcasting Union (EBU), Comité Européen de Normalization Electrotechnique (CENELEC) and theEuropean Telecommunications Standards Institute (ETSI).NOTE:The EBU/ETSI JTC was established in 1990 to co-ordinate the drafting of standards in the specific fieldof broadcasting and related fields. Since 1995 the JTC became a tripartite body by including in theMemorandum of Understanding also CENELEC, which is responsible for the standardization of radio andtelevision receivers. The EBU is a professional association of broadcasting organizations whose workincludes the co-ordination of its members' activities in the technical, legal, programme-making andprogramme-exchange domains. The EBU has active members in about 60 countries in the Europeanbroadcasting area; its headquarters is in Geneva.European Broadcasting UnionCH-1218 GRAND SACONNEX (Geneva)SwitzerlandTel:+41 22 717 21 11Fax:+41 22 717 24 81EUREKA Project 147 (DAB*)EUREKA Project 147 was established in 1987, with funding from the EC, to develop a system for the broadcasting ofaudio and data to fixed, portable or mobile receivers. Their work resulted in the publication of a European standard,ETS 300 401 (see bibliography), for DAB which now has world-wide acceptance. The members of theEUREKA 147 Project are drawn from broadcasting organizations and telecommunication providers together withcompanies from the professional and consumer electronics industry.*DAB is a registered trademark owned by one of the EUREKA 147 partners.National transposition datesDate of adoption of this EN:20 February 1998Date of latest announcement of this EN (doa):30 June 1998Date of latest publication of new National Standardor endorsement of this EN (dop/e):31 December 1998Date of withdrawal of any conflicting National Standard (dow):31 December 1998SIST EN 300 798:2000

EN 300 798 V1.1.1 (1998-03)5IntroductionThe present document is one of a set associated with DAB. ETS 300 401 (see bibliography) describes the transmittedsignal; the interface between the broadcaster's transmitters and the listener's receiver. The associated documents,EN 300 797 and ETS 300 799 (see bibliography), describe additional interfaces which can be used by broadcasters ornetwork providers to build DAB networks.Figure 1 shows a DAB network in outline. For convenience, the network is split into a number of different parts, eachmanaged by a different entity. The different entities are; the Programme/Data provider, the Service Component provider,the Ensemble provider and the Transmission Network provider.NOTE:A Service Component provider may be generating a full DAB service or a component of a DAB service.For the purposes of the present document, the terms Service provider and Service Component provider areinterchangeable.Programme/Data providerThe Programme/Data provider is the originator of the audio programme or the data being carried within the DABService Component. The format for the output of the Programme/Data provider may take many different forms andshould be agreed between the Programme/Data provider and the Service Component provider.Service Component providerThe Service Component provider is producing one or more complete Service Components which may form the completeDAB service, but may not. Data from the Service Component provider will comprise three different parts:-Service Component data which is to be inserted into the DAB Main Service Channel (MSC);-Service Information related to the Service Component data which is to be inserted into the Fast InformationChannel (FIC);-Other data, not intended for transmission, including status monitoring or control.The interface between the Service Component provider and the Ensemble provider is known as the Service TransportInterface (STI) and is defined in EN 300 797 (see bibliography).Ensemble providerThe Ensemble provider receives a set of service components from one or more Service Component providers. He thenformats the FIC, and generates an unambiguous description of the full DAB Ensemble.The ensemble description is passed to the Transmission Network provider via an interface called the ETI which isdefined in ETS 300 799 (see bibliography).Transmission Network providerThe Transmission Network provider generates the DAB Ensemble and transmits it to the receiver. The output of theTransmission provider is defined by ETS 300 401 (see bibliography). The Transmission Network provider is usually thefinal recipient of the ETI and is responsible for turning it into the DAB transmission signal using an OFDM generator.In some cases, as an intermediate step, the Transmission provider may find it convenient to generate a basebandrepresentation of the signal to be transmitted. The baseband representation, known as the DIQ, is a set of digital samplesdefining the In-phase (I) and Quadrature (Q) components of the final carrier. This interface is defined in the presentdocument and provides a convenient interface between digital processing equipment and radio-frequency modulatingequipment.SIST EN 300 798:2000

EN 300 798 V1.1.1 (1998-03)6Transmission Network ProviderSTISTISTISTIETIService Component provider AProgrammeor Dataprovider A(1)Programmeor Dataprovider A(n)Service Component provider ZProgrammeor Dataprovider Z(1)Programmeor Dataprovider Z(p)From other ServiceComponent providersSTI - Service Transport InterfaceETI - Ensemble Transport InterfaceDIQ - Digital baseband I/Q interfaceTransmitter 1Transmitter METIETIDIQDIQServiceComponentproviderServiceComponentproviderEnsembleproviderBasebandprocessingRFmodulationBasebandprocessingRFmodulationDAB Ensemble toETS 300 401 [1]DAB Ensemble toETS 300 401 [1]Figure 1: DAB network outlineSIST EN 300 798:2000

EN 300 798 V1.1.1 (1998-03)71ScopeThe present document establishes a standard method for the connection of digital processing equipment (which isproducing DAB baseband I/Q signals) and Radio Frequency (RF) modulation equipment in a DAB system. It can alsobe used to provide access to baseband I/Q signals for test purposes.ETS 300 401 established a broadcasting standard for a DAB system. Broadcasters who implement DAB networksrequire standardized interfaces for the connection of different equipment in the DAB chain.The present document is applicable to DAB channel coding equipment. It describes the characteristics of a suitableinterface for the connection of the two major elements of the DAB OFDM generator; the baseband processingequipment and the RF modulator. The interface provides an interconnection between a single source (the basebandprocessor) and a single destination (the RF modulator).The present document does not cover the generation of the digital I/Q baseband signals. This is covered inETS 300 401. The digital baseband I/Q interface is unidirectional and does not cover the provision of status nor controlinformation in the reverse direction (i.e. from the modulator back to the baseband processing section of the equipment).2ReferencesReferences may be made to:a)specific versions of publications (identified by date of publication, edition number, version number, etc.), inwhich case, subsequent revisions to the referenced document do not apply; orb)all versions up to and including the identified version (identified by "up to and including" before the versionidentity); orc)all versions subsequent to and including the identified version (identified by "onwards" following the versionidentity); ord)publications without mention of a specific version, in which case the latest version applies.A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the samenumber.[1]ITU-R BT.656-2 (November 1994): "Interfaces for digital component video signals in 525-lineand 625-line television systems".3Definitions, abbreviations and symbols3.1DefinitionsFor the purposes of the present document, the definitions of ETS 300 401 (see bibliography) and the followingdefinitions apply:baseband I/Q: A representation of the DAB transmission signal using I and Q components of the carrier whichrepresent the amplitude of the in-phase and quad
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