1、BS ISO 17987-4:2016Road vehicles LocalInterconnect Network (LIN)Part 4: Electrical physical layer (EPL)specification 12 V/24 VBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 17987-4:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implemen
2、tation of ISO 17987-4:2016.The UK participation in its preparation was entrusted to TechnicalCommittee AUE/16, Data Communication (Road Vehicles).A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the nece
3、ssaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016. Published by BSI StandardsLimited 2016ISBN 978 0 580 81731 1ICS 43.040.15Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was
4、published under the authority of theStandards Policy and Strategy Committee on 30 September 2016.Amendments issued since publicationDate Text affectedBS ISO 17987-4:2016 ISO 2016Road vehicles Local Interconnect Network (LIN) Part 4: Electrical physical layer (EPL) specification 12 V/24 VVhicules rou
5、tiers Rseau Internet local (LIN) Partie 4: Spcification de la couche lectrique physique (EPL) 12V/24VINTERNATIONAL STANDARDISO17987-4First edition2016-09-01Reference numberISO 17987-4:2016(E)BS ISO 17987-4:2016ISO 17987-4:2016(E)ii ISO 2016 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2016, P
6、ublished in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Perm
7、ission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 17987-4:2016ISO 17987-4:2016(E
8、)Foreword ivIntroduction v1 Scope .12 Normative references 13 Terms, definitions, symbols and abbreviated terms .13.1 Terms and definitions . 13.2 Symbols . 23.3 Abbreviated terms . 54 Conventions .65 Electrical physical layer requirements 65.1 Bit rate deviation . 65.1.1 12 V LIN systems: Parameter
9、s . 65.1.2 24 V LIN systems: Parameters . 75.2 Timing requirements . 95.2.1 Bit timing 95.2.2 Synchronization procedure 95.2.3 Bit sample timing 95.3 Line driver/receiver 115.3.1 General configuration .115.3.2 Definition of supply voltages for the physical interface 115.3.3 Signal specification .125
10、.3.4 12 V LIN systems: Electrical parameters .135.3.5 24 V LIN systems: Electrical parameters .175.3.6 Line characteristics .205.3.7 12 V LIN systems: performance in non-operation supply voltage range .205.3.8 24 V LIN systems: performance in non-operation supply voltage range .215.3.9 Performance d
11、uring fault modes 215.3.10 ESD/EMI compliance 21Annex A (informative) LIN peripheral interface design considerations 22Bibliography .27 ISO 2016 All rights reserved iiiContents PageBS ISO 17987-4:2016ISO 17987-4:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide f
12、ederation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through 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 co
13、mmittee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document
14、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, P
15、art 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of
16、the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific te
17、rms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/TC 22, R
18、oad vehicles, Subcommittee SC 31, Data communication.A list of all parts in the ISO 17987 series can be found on the ISO website.iv ISO 2016 All rights reservedBS ISO 17987-4:2016ISO 17987-4:2016(E)IntroductionISO 17987 (all parts) specifies the use cases, the communication protocol and physical lay
19、er requirements of an in-vehicle communication network called Local Interconnect Network (LIN).The LIN protocol as proposed is an automotive focused low speed universal asynchronous receiver transmitter (UART) based network. Some of the key characteristics of the LIN protocol are signal-based commun
20、ication, schedule table based frame transfer, master/slave communication with error detection, node configuration and diagnostic service transportation.The LIN protocol is for low-cost automotive control applications, for example, door module and air condition systems. It serves as a communication i
21、nfrastructure for low-speed control applications in vehicles by providing: signal-based communication to exchange information between applications in different nodes; bit rate support from 1 kbit/s to 20 kbit/s; deterministic schedule table-based frame communication; network management that wakes up
22、 and puts the LIN cluster into sleep state in a controlled manner; status management that provides error handling and error signalling; transport layer that allows large amount of data to be transported (such as diagnostic services); specification of how to handle diagnostic services; electrical phy
23、sical layer specifications; node description language describing properties of slave nodes; network description file describing behaviour of communication; application programmers interface.ISO 17987 (all parts) is based on the open systems interconnection (OSI) Basic Reference Model as specified in
24、 ISO/IEC 7498-1 which structures communication systems into seven layers.The OSI model structures data communication into seven layers called (top down) application layer (layer 7), presentation layer, session layer, transport layer, network layer, data link layer and physical layer (layer 1). A sub
25、set of these layers is used in ISO 17987 (all parts).ISO 17987 (all parts) distinguishes between the services provided by a layer to the layer above it and the protocol used by the layer to send a message between the peer entities of that layer. The reason for this distinction is to make the service
26、s, especially the application layer services and the transport layer services, reusable also for other types of networks than LIN. In this way, the protocol is hidden from the service user and it is possible to change the protocol if special system requirements demand it.ISO 17987 (all parts) provid
27、es all documents and references required to support the implementation of the requirements related to the following. ISO 17987-1: This part provides an overview of the ISO 17987 (all parts) and structure along with the use case definitions and a common set of resources (definitions, references) for
28、use by all subsequent parts. ISO 17987-2: This part specifies the requirements related to the transport protocol and the network layer requirements to transport the PDU of a message between LIN nodes. ISO 17987-3: This part specifies the requirements for implementations of the LIN protocol on the lo
29、gical level of abstraction. Hardware-related properties are hidden in the defined constraints. ISO 2016 All rights reserved vBS ISO 17987-4:2016ISO 17987-4:2016(E) ISO 17987-4: This part specifies the requirements for implementations of active hardware components which are necessary to interconnect
30、the protocol implementation. ISO/TR 17987-5: This part specifies the LIN application programmers interface (API) and the node configuration and identification services. The node configuration and identification services are specified in the API and define how a slave node is configured and how a sla
31、ve node uses the identification service. ISO 17987-6: This part specifies tests to check the conformance of the LIN protocol implementation according to ISO 17987-2 and ISO 17987-3. This comprises tests for the data link layer, the network layer and the transport layer. ISO 17987-7: This part specif
32、ies tests to check the conformance of the LIN electrical physical layer implementation (logical level of abstraction) according to this document.vi ISO 2016 All rights reservedBS ISO 17987-4:2016INTERNATIONAL STANDARD ISO 17987-4:2016(E)Road vehicles Local Interconnect Network (LIN) Part 4: Electric
33、al physical layer (EPL) specification 12 V/24 V1 ScopeThis document specifies the 12 V and 24 V electrical physical layers (EPL) of the LIN communications system.The electrical physical layer for LIN is designed for low-cost networks with bit rates up to 20 kbit/s to connect automotive electronic co
34、ntrol units (ECUs). The medium that is used is a single wire for each receiver and transmitter with reference to ground.This document includes the definition of electrical characteristics of the transmission itself and also the documentation of basic functionality for bus driver devices.All paramete
35、rs in this document are defined for the ambient temperature range from 40 C to 125 C.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited appli
36、es. For undated references, the latest edition of the referenced document (including any amendments) applies.IEC 61000-4-2, Electromagnetic compatibility (EMC) Part 4-2: Testing and measurement techniques Electrostatic discharge immunity test3 Terms, definitions, symbols and abbreviated terms3.1 Ter
37、ms and definitionsFor the purposes of this document, the following terms and definitions apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at ht
38、tp:/www.iso.org/obp3.1.1BR_Range_20KLIN systems which operate at speeds up to 20 kbit/s3.1.2BR_Range_20K 12 V12 V LIN systems which operate at speeds up to 20 kbit/s3.1.3BR_Range_20K 24 V24 V LIN systems which operate at speeds up to 20 kbit/s ISO 2016 All rights reserved 1BS ISO 17987-4:2016ISO 179
39、87-4:2016(E)3.1.4BR_Range_10KLIN systems which operate at speeds up to 10 417 kbits/s3.1.5BR_Range_10K 12 V12 V LIN systems which operate at speeds up to 10 417 kbits/s3.1.6BR_Range_10K 24 V24 V LIN systems which operate at speeds up to 10 417 kbit/s3.2 Symbols% percentages microsecondCLINEline capa
40、citanceCBUStotal bus capacitanceCMASTERcapacitance of master nodeCRXDRXD capacitance (LIN receiver, RXD capacitive load condition)CSLAVEcapacitance of slave noded2V/dt2second derivative of voltage (Volt2per second2)di/dt instantaneous rate of current change (amps per second)Dser_intserial internal d
41、iode at transceiver ICDser_masterserial master diodeFTOL_RES_MASTERmaster bit rate deviation from nominal bit rateFTOL_RES_MASTER_Amaster bit rate deviation from nominal bit rate in BR_Range_20K systemsFTOL_RES_MASTER_Bmaster bit rate deviation from nominal bit rate in BR_Range_10K systemsFTOL_RES_S
42、LAVEslave bit rate deviation from nominal bit rateFTOL_RES_SLAVE_Aslave bit rate deviation from nominal bit rate in BR_Range_20K systemsFTOL_RES_SLAVE_Bslave bit rate deviation from nominal bit rate in BR_Range_10K systemsFTOL_RES_SLAVE_1slave node 1 bit rate deviation from nominal bit rateFTOL_RES_
43、SLAVE_2slave node 2 bit rate deviation from nominal bit rateFTOL_SLAVE_to_SLAVEslave to slave bit rate deviationFTOL_SYNCHslave node bit rate deviation from master node bit rate after synchronizationFTOL_SYNCH_Aslave node bit rate deviation from master node bit rate after synchronization in BR_Range
44、_20K systemsFTOL_SYNCH_Bslave node bit rate deviation from master node bit rate after synchronization in BR_Range_10K systems2 ISO 2016 All rights reservedBS ISO 17987-4:2016ISO 17987-4:2016(E)FTOL_SYNCH_1slave node 1 bit rate deviation from master node bit rate after synchronizationFTOL_SYNCH_2slav
45、e node 2 bit rate deviation from master node bit rate after synchronizationFTOL_UNSYNCHslave node bit rate deviation from nominal bit rate before synchronizationFTOL_UNSYNCH_Aslave node bit rate deviation from nominal bit rate before synchronization in BR_Range_20K systemsFTOL_UNSYNCH_Bslave node bi
46、t rate deviation from nominal bit rate before synchronization in BR_Range_10K systemsIBUScurrent into the ECU bus lineIBUS_LIMcurrent limitation for driver dominant state driver on VBUS= VBAT_maxinto ECU bus lineIBUS_NO_BATcurrent at ECU bus line when VBATis disconnectedIBUS_NO_GNDcurrent at ECU bus
47、 line when VGND_ECUis disconnectedIBUS_PAS_domcurrent at ECU bus line when driver off (passive) at dominant LIN bus levelIBUS_PAS_reccurrent at ECU bus line when driver off (passive) at recessive LIN bus levelGNDDeviceGND of ECUk kilo ohmkbit/s kilo bit per secondLENBUStotal length of LIN bus lineLI
48、NBusLIN networkms millisecondnF nano faradpF pico faradpF/m pico farad per meter (line capacitance)RBUStotal bus-resistor including all slave and master resistors RBUS= RMASTER|RSLAVE_1|RSLAVE_2| to |RSLAVE_NRMASTERmaster resistorRpull_uppull-up resistorRSLAVEslave resistortBFSbyte field synchroniza
49、tion timetBITbasic bit timestEBSearliest bit sample timetrx_pdpropagation delay of receiver ISO 2016 All rights reserved 3BS ISO 17987-4:2016ISO 17987-4:2016(E)trx_symsymmetry of receiver propagation delay rising edge propagation delay of receivertLBSlatest bit sample timetrx_pdf(1)propagation delay time of receiving node 1 at falling (recessive to dominant) LIN bus edgetrx_pdf(2)propagation delay time of receiving node 2 at falling (recessive to dominant) LIN bus edgetrx_pdr(1)propagation delay time of r
