ISO 11898-1:2015

Road vehicles — Controller area network (CAN) — Part 1: Data link layer and physical signalling

ISO 11898-1:2015 specifies the characteristics of setting up an interchange of digital information between modules implementing the CAN data link layer. Controller area network is a serial communication protocol, which supports distributed real-time control and multiplexing for use within road vehicles and other control applications. ISO 11898-1:2015 specifies the Classical CAN frame format and the newly introduced CAN Flexible Data Rate Frame format. The Classical CAN frame format allows bit rates up to 1 Mbit/s and payloads up to 8 byte per frame. The Flexible Data Rate frame format allows bit rates higher than 1 Mbit/s and payloads longer than 8 byte per frame. ISO 11898-1:2015 describes the general architecture of CAN in terms of hierarchical layers according to the ISO reference model for open systems interconnection (OSI) according to ISO/IEC 7498‑1. The CAN data link layer is specified according to ISO/IEC 8802‑2 and ISO/IEC 8802‑3. ISO 11898-1:2015 contains detailed specifications of the following: logical link control sub-layer; medium access control sub-layer; and physical coding sub-layer. There are three implementation options. They are the following: support of the Classical CAN frame format only, not tolerating the Flexible Data Rate frame format; support of the Classical CAN frame format and tolerating the Flexible Data Rate frame format; and support of the Classical CAN frame format and the Flexible Data Rate frame format. The last option is recommended to be implemented for new designs.

Véhicules routiers — Gestionnaire de réseau de communication (CAN) — Partie 1: Couche liaison de données et signalisation physique

General Information

• Status: Withdrawn
• Publication Date: 13-Dec-2015
• ICS: 43.040.15 - Car informatics. On board computer systems
• Technical Committee: ISO/TC 22/SC 31 - Data communication
• Drafting Committee: ISO/TC 22/SC 31/WG 3 - In-vehicle networks
• Current Stage: 9599 - Withdrawal of International Standard
• Start Date: 24-May-2024
• Completion Date: 19-Apr-2025

Relations

• Revised: ISO 11898-1:2024 - Road vehicles — Controller area network (CAN) — Part 1: Data link layer and physical coding sublayer
• Effective Date: 28-Jan-2023
• Revises: ISO 11898-1:2003 - Road vehicles — Controller area network (CAN) — Part 1: Data link layer and physical signalling
• Effective Date: 02-Mar-2013

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 11898-1
Second edition
2015-12-15
Road vehicles — Controller area
network (CAN) —
Part 1:
Data link layer and physical signalling
Véhicules routiers — Gestionnaire de réseau de communication
(CAN) —
Partie 1: Couche liaison de données et signalisation physique
Reference number
©
ISO 2015
© ISO 2015, 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 2015 – All rights reserved

Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Conformance . 1
3 Normative references . 2
4 Terms and definitions . 2
5 Symbols and abbreviated terms . 5
6 Basic concepts of CAN . 7
6.1 CAN properties . 7
6.2 Frames . 8
6.3 Bus access method . 8
6.4 Information routing . 8
6.5 Network flexibility . 8
6.6 Data consistency . 8
6.7 Remote data request . 8
6.8 Error detection . 9
6.9 Error signalling and recovery time . 9
6.10 ACK . 9
6.11 Automatic retransmission . 9
6.12 Fault confinement. 9
6.13 Error-active . 9
6.14 Error-passive . 9
6.15 Bus-off .10
7 Layered architecture of CAN .10
7.1 Reference to OSI model .10
7.2 Protocol specification .11
7.3 Format description of services .11
7.3.1 Format description of service primitives .11
7.3.2 Types of service primitives .12
7.4 LLC interface .12
8 Description of LLC sub-layer .12
8.1 General .12
8.2 Services of LLC sub-layer .13
8.2.1 Types of connectionless-mode transmission services .13
8.2.2 Service primitive specification .13
8.3 Functions of LLC sub-layer .18
8.3.1 General.18
8.3.2 Frame acceptance filtering .18
8.3.3 Overload notification .18
8.3.4 Recovery management .19
8.4 Structure of LLC frames .19
8.4.1 General.19
8.4.2 Specification of LLC DF .19
8.4.3 Specification of LLC RF .20
8.5 Limited LLC frames .21
9 Interface between LLC and MAC .21
9.1 Services .21
9.2 Time and time triggering .21
9.2.1 Description . . .21
9.2.2 Time base .21
9.2.3 Time reference point .21
9.2.4 Event generation .22
9.3 Disabling automatic retransmission .22
9.3.1 Retransmission of frames.22
9.4 Message time stamping .22
10 Description of MAC sub-layer .22
10.1 General .22
10.2 Services of MAC sub-layer .22
10.2.1 Service description .22
10.2.2 Service primitives specification .23
10.3 Functional model of MAC sub-layer architecture .27
10.3.1 Capability .27
10.3.2 Frame transmission . .27
10.3.3 Frame reception .28
10.4 Structure of MAC frames.29
10.4.1 Description . . .29
10.4.2 Specification of MAC DF .29
10.4.3 Specification of MAC RF .34
10.4.4 Specification of EF .34
10.4.5 Specification of OF .35
10.4.6 Specification of inter-frame space .36
10.5 Frame coding .
...