Road vehicles -- Diagnostic communication over Internet Protocol (DoIP)

ISO 13400-3:2016 specifies the vehicle communication interface and test equipment requirements for a physical and data link layer based on IEEE 802.3 100BASE-TX. This interface serves as the physical basis for IP-based communication between the vehicle and test equipment. This document specifies the following aspects: - requirements for signal and wiring schematics in order to ensure physical layer compatibility of the vehicle interface and Ethernet networks and test equipment communication interfaces; - discovery/identification of the in-vehicle diagnostic Ethernet interface; - activation and deactivation of the in-vehicle diagnostic Ethernet interface; - mechanical and electrical diagnostic connector requirements; - this edition has been modified to include the identification of two Ethernet pin assignments.

Véhicules routiers -- Communication de diagnostic au travers du protocole internet (DoIP)

General Information

Status
Published
Publication Date
08-Nov-2016
Current Stage
6060 - International Standard published
Start Date
23-Sep-2016
Completion Date
09-Nov-2016
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INTERNATIONAL ISO
STANDARD 13400-3
Second edition
2016-11-15
Road vehicles — Diagnostic
communication over Internet Protocol
(DoIP) —
Part 3:
Wired vehicle interface based on
IEEE 802.3
Véhicules routiers — Communication de diagnostic au travers du
protocole internet (DoIP) —
Partie 3: Interface du véhicule câblé sur la base de l’IEEE802.3
Reference number
ISO 13400-3:2016(E)
ISO 2016
---------------------- Page: 1 ----------------------
ISO 13400-3:2016(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form

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ii © ISO 2016 – All rights reserved
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ISO 13400-3:2016(E)
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 Document overview........................................................................................................................................................................................... 2

7 Ethernet physical and data link layer requirements ...................................................................................................... 3

7.1 General information ........................................................................................................................................................................... 3

7.2 Ethernet physical layer requirements ................................................................................................................................ 4

7.3 Ethernet data link layer requirements ............................................................................................................................... 4

7.4 Ethernet PHY and MAC requirements ................................................................................................................................ 5

7.5 Ethernet activation line requirements ............................................................................................................................... 5

7.5.1 Vehicle activation line requirements .............................................................................................................. 5

7.5.2 Vehicle activation line circuit example – Option 1 requirements .......................................... 8

7.5.3 Vehicle activation line circuit example – Option 2 requirements .......................................... 8

7.5.4 Principles of activation line operation .......................................................................................................... 9

7.5.5 External test equipment activation line requirements ................................................................10

7.5.6 Vehicle manufacturers activation line requirements ....................................................................10

7.6 Spice simulation of activation line options ..................................................................................................................10

7.7 Process to determine Options 1, 2 or non-ISO 13400 ........................................................................................11

7.8 Cable definitions .................................................................................................................................................................................12

Bibliography .............................................................................................................................................................................................................................14

© ISO 2016 – All rights reserved iii
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ISO 13400-3:2016(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation 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 committee. 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 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).

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 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 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 the following URL: www.iso.org/iso/foreword.html.

The committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 31, Data

communication.

This second edition cancels and replaces the first edition (ISO 13400-3:2011), which has been

technically revised.
A list of all parts in the ISO 13400 series can be found on the ISO website.
iv © ISO 2016 – All rights reserved
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ISO 13400-3:2016(E)
Introduction

Vehicle diagnostic communication has been developed starting with the introduction of the first

legislated emissions-related diagnostics and has evolved over the years, now covering various use

cases ranging from emission-related diagnostics to vehicle-manufacturer-specific applications like

calibration or electronic component software updates.

With the introduction of new in-vehicle network communication technologies, the interface between

the vehicle’s electronic control units and the test equipment has been adapted several times to address

the specific characteristics of each new network communication technology requiring optimized

data link layer definitions and transport protocol developments in order to make the new in-vehicle

networks usable for diagnostic communication.

With increasing memory size of electronic control units, the demand to update this increasing amount

of software and an increasing number of functions provided by these control units, technology of the

connecting network and buses has been driven to a level of complexity and speed similar to computer

networks. New applications (x-by-wire, infotainment) require high band-width and real-time networks

(like FlexRay, MOST), which cannot be adapted to provide the direct interface to a vehicle. This requires

gateways to route and convert messages between the in-vehicle networks and the vehicle interface to

test equipment.

The intent of ISO 13400 (all parts) is to describe a standardized vehicle interface which

— separates in-vehicle network technology from the external test equipment vehicle interface

requirements to allow for a long-term stable external vehicle communication interface,

— utilizes existing industry standards to define a long-term stable state-of-the-art communication

standard usable for legislated diagnostic communication, as well as for manufacturer-specific use

cases, and

— can easily be adapted to new physical and data link layers, including wired and wireless connections,

by using existing adaptation layers.

To achieve this, all parts of ISO 13400 are based on the Open Systems Interconnection (OSI) Basic

Reference Model specified in ISO/IEC 7498-1 and ISO/IEC 10731, which structures communication

systems into seven layers. When mapped on this model, the services specified by ISO 14229-1,

ISO 14229-2 and ISO 14229-5 are divided into

a) unified diagnostic services (layer 7), specified in ISO 14229-1, ISO 14229-5, ISO 27145-3,

b) presentation (layer 6):
1) for enhanced diagnostics, specified by the vehicle manufacturer,

2) for WWH-OBD (World-Wide Harmonized On-Board Diagnostics), specified in ISO 27145-2,

SAE J1930-DA, SAE J1939-DA (SPNs), SAE J1939-73:2010, Appendix A (FMI), SAE J1979-DA,

SAE J2012-DA,
c) session layer services (layer 5), specified in ISO 14229-2,
d) transport protocol (layer 4), specified in ISO 13400-2,
e) network layer (layer 3) services, specified in ISO 13400-2, and
f) physical and data link services (layers 1 and 2), specified in this document,
in accordance with Table 1.
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ISO 13400-3:2016(E)

Table 1 — Enhanced and legislated WWH-OBD diagnostic specifications applicable to the

OSI layers
OSI 7 layers Vehicle manufacturer enhanced WWH-OBD document reference
diagnostics
Application (layer 7) ISO 14229-1/ISO, 14229 ISO 14229-1/ISO, 27145
Presentation (layer 6) Vehicle manufacturer specific ISO 27145-2, SAE J1930-DA,
SAE J1939-DA (SPNs),
SAE J1939–73:2010, Appendix A
(FMIs), SAE J1979-DA, SAE J2012-
Session (layer 5) ISO 14229-2 ISO 14229-2
Transport (layer 4) ISO 13400-2 DoIP TCP and IP
Network (layer 3)
Data link (layer 2) ISO 13400-3 DoIP, IEEE 802.3
Physical (layer 1)
Seven layers according to ISO/IEC 7498-1 and ISO/IEC 10731.

The application layer services covered by ISO 14229-5 have been defined in compliance with diagnostic

services established in ISO 14229-1, but are not limited to use only with them.

The transport and network layer services covered by ISO 13400-2 have been defined to be independent

of the physical layer implemented.

For other application areas, this document can be used with any Ethernet physical layer.

vi © ISO 2016 – All rights reserved
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INTERNATIONAL STANDARD ISO 13400-3:2016(E)
Road vehicles — Diagnostic communication over Internet
Protocol (DoIP) —
Part 3:
Wired vehicle interface based on IEEE 802.3
1 Scope

This document specifies the vehicle communication interface and test equipment requirements for a

physical and data link layer based on IEEE 802.3 100BASE-TX.

This interface serves as the physical basis for IP-based communication between the vehicle and test

equipment. This document specifies the following aspects:

— requirements for signal and wiring schematics in order to ensure physical layer compatibility of the

vehicle interface and Ethernet networks and test equipment communication interfaces;

— discovery/identification of the in-vehicle diagnostic Ethernet interface;
— activation and deactivation of the in-vehicle diagnostic Ethernet interface;
— mechanical and electrical diagnostic connector requirements;

— this edition has been modified to include the identification of two Ethernet pin assignments.

2 Normative references

The 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 applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

IEC 60950-1, Information technology equipment — Safety — Part 1: General requirements

IEEE 802.3-2015, IEEE Standard for Ethernet
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 13400-1 and ISO 14229-1 and

the following apply.
3.1
automatic medium-dependent interface crossover
Auto-MDI(X)

device that allows the Ethernet hardware to decide whether a cross-linked cable or a one-to-one

connected (patch) cable is used for the connection between two Ethernet ports and which configures

the physical layer transceiver (PHY) according to the type of cable in order to correctly connect Tx and

Rx linesterm
© ISO 2016 – All rights reserved 1
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ISO 13400-3:2016(E)
3.2
DoIP Edge Node

host inside the vehicle, where an Ethernet activation line in accordance with this part of ISO 13400 is

terminated and where the link from the first node/host in the external network is terminated

3.3
link segment
twisted-pair link for connecting two physical layers (PHYs) for 100BASE-TX
Note 1 to entry: Adapted from IEEE 802.3:2008, 1.4.355.
4 Abbreviated terms
[1]
Cat5 category 5 cable as specified in TIA/EIA-568-B
DoIP diagnostics over Internet Protocol
DoEth diagnostics over Internet Protocol on Ethernet
FMI failure mode indicator
MAC media access control
MDI medium-dependent interface
PE protective earth conductor
PHY physical layer transceiver
Rx receive
SPN suspect parameter number
Tx transmit
5 Conventions

ISO 13400 is based on the conventions discussed in the OSI Service Conventions (ISO/IEC 10731) as

they apply to diagnostic services.
6 Document overview

ISO 13400 is applicable to vehicle diagnostic systems implemented on an IP communication network.

ISO 13400 has been established in order to define common requirements for vehicle diagnostic systems

implemented on an IP communication link.

Although primarily intended for diagnostic systems, ISO 13400 has been developed to also meet

requirements from other IP-based systems needing a transport protocol and network layer services.

Figure 1 illustrates the most applicable application implementations utilizing DoIP.

2 © ISO 2016 – All rights reserved
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ISO 13400-3:2016(E)
Figure 1 — DoIP document reference according to the OSI model
7 Ethernet physical and data link layer requirements
7.1 General information

Ethernet is a collection of several standards for different transmission technologies and speeds

contained in IEEE 802.3 and is a frame-based networking technology for wired local area networks.

Frames are defined as the format of data packets on the wire. The Internet Protocol (IPv4) theoretically

allows for a maximum IP packet length of 64 Kbytes. This size is limited by the Ethernet specification,

which defines a 16-bit-length field and requires a minimum packet length of 64 bytes, as well as allowing

for a maximum payload length of 1 500 bytes. Consequently, IP packets can have a maximum length of

only 1 500 bytes on Ethernet. However, IP allows for fragmentation of IP packets over multiple Ethernet

frames to work around this limitation. The rules for fragmentation of IP packets differ between IPv6

and IPv4 and are not specified in this document.

The Ethernet connection of a vehicle works with four transmission lines in accordance with IEEE 802.3

100BASE-TX, as well as using an additional activation line. The Ethernet controller in the DoIP Edge

Node can be switched on and off via the activation line when the test equipment is connected to, or

disconnected from, the vehicle.
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ISO 13400-3:2016(E)
There are two types of Ethernet patch cables available:

— one-to-one (1:1) connection, which is usually used to connect an end-node (e.g. a computer) with a

network hub or switch. In this case, the pins of each RJ45 connector of the patch cable or the cable to

the vehicle connector are directly connected to each other (e.g. Rx+ on the source port is connected

to Rx+ on the destination port).

— cross-linked connection, which is usually used to connect two end nodes directly with each other

(e.g. computer to computer). In this case, the Tx pins on the source
...

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