International ISO Standard IS0 17987-1 Road vehicles Local Interconnect Second edition Network (LIN) - 2025-05 Part 1: General information and use case definition Vehicules routiers - Reéseau Internet local (LIN) - Partie 1: Information génerale et definition des cas d'usage Reference number IS0 17987-1:2025(en) @ ISO 2025 IS0 17987-1:2025(en) COPYRIGHTPROTECTEDDOCUMENT IS02025 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may the internet or an intranet, without prior written permission. Permission can be requested from either IsO at the address below or ISo's member body in the country of the requester. ISO copyright office CP 401: Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Email: [email protected] Website: www.iso.org Published in Switzerland @ IS0 2025 - All rights reserved ii IS0 17987-1:2025(en) Contents Page Foreword .iv Introduction V 1 Scope. .1 2 Normative references .1 3 Terms and definitions .1 4 Abbreviated terms .2 5 Conventions .2 6 Use case overview and principles .3 6.1 Basic principles for use case definition .3 6.2 Use case clusters. ..3 7 LIN communications system use case definition .3 7.1 UC 1 Commander task cluster. ..3 7.1.1 UC 1.1 Generate LIN frame header .3 7.2 UC 2 Responder task cluster. ..4 7.2.1 Uc 2.1 Break/sync byte field sequence detector .4 7.2.2 UC 2.2 LIN frame processor. ..4 7.2.3 UC 2.3 Responder node configuration .4 7.2.4 UC 2.4 Responder error status reporting .5 7.2.5 Uc 2.5 Diagnostic responder node capabilities .5 7.3 Uc 3 LIN communication protocol cluster .6 7.3.1 UC 3.1 Synchronization.. ..6 7.3.2 UC 3.2 Checksum.. .6 7.3.3 UC 3.3 Responder bit rate detection ..6 7.4 UC 4 LIN physical layer cluster. .7 7.4.1 UC 4.1 Performance in non-operation supply voltage range ..7 7.4.2 UC 4.2 Loss of supply voltage.. .7 7.5 UC 5 LIN network management. .7 7.5.1 UC 5.1 LIN cluster network management. 7 Bibliography .8 @ IS0 2025 - All rights reserved iii IS0 17987-1:2025(en) Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards bodies(isoOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthrough IsO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the Iso/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of IsO documents should be noted. This document was drafted in accordance with the editorial rules of the ISo/IEC Directives, Part 2 (see www.iso.org/directives). Iso draws attention to the possibility that the implementation of this document may involve the use of (a) patent(s). Iso takes no position concerning the evidence, validity or applicability of any claimed patent rights in respect thereof. As of the date of publication of this document, Iso had received notice of (a) patent(s) which may be required to implement this document. However, implementers are cautioned that this may not represent the latest information, which may be obtained from the patent database available at www.iso.org/patents. IsO shall not be held responsible for identifying any or all such patent rights. Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation of the voluntary nature of standards, the meaning of Iso specific terms and expressions related to conformity assessment, as well as information about IsO's adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso