ISO 11898-1:2003(E)
© ISO 2003 — All rights reserved iii
Contents Page
Foreword ............................................................................................................................................................. v
1 Scope...................................................................................................................................................... 1
2 Conformance ......................................................................................................................................... 1
3 Normative references ........................................................................................................................... 1
4 Terms and definitions........................................................................................................................... 2
5 Symbols and abbreviated terms.......................................................................................................... 3
6 Basic concepts of CAN......................................................................................................................... 5
6.1 CAN properties ...................................................................................................................................... 5
6.2 Frames.................................................................................................................................................... 5
6.3 Bus access method .............................................................................................................................. 5
6.4 Information routing ............................................................................................................................... 5
6.5 System flexibility................................................................................................................................... 5
6.6 Data consistency................................................................................................................................... 5
6.7 Remote data request............................................................................................................................. 6
6.8 Error detection ...................................................................................................................................... 6
6.9 Error signalling and recovery time...................................................................................................... 6
6.10 ACK......................................................................................................................................................... 6
6.11 Automatic retransmission.................................................................................................................... 6
6.12 Fault confinement ................................................................................................................................. 6
6.13 Error-active ............................................................................................................................................ 6
6.14 Error-passive ......................................................................................................................................... 6
6.15 Bus-off.................................................................................................................................................... 7
7 Layered architecture of CAN................................................................................................................ 7
7.1 Reference to OSI model........................................................................................................................ 7
7.2 Protocol specification........................................................................................................................... 8
7.3 Format description of services............................................................................................................ 9
7.4 LLC interface ......................................................................................................................................... 9
8 Description of LLC sublayer .............................................................................................................. 10
8.1 General ................................................................................................................................................. 10
8.2 Services of LLC sublayer ................................................................................................................... 10
8.3 Functions of LLC sublayer .............................................................................................................. 14
8.4 Structure of LLC frames................................................................................................................... 14
8.5 Limited LLC frames........................................................................................................................... 16
9 Interface between LLC and MAC ....................................................................................................... 16
9.1 Services............................................................................................................................................... 16
9.2 TTC option .......................................................................................................................................... 16
10 Description of MAC sublayer ............................................................................................................. 17
10.1 General ................................................................................................................................................. 17
10.2 Services of MAC sublayer................................................................................................................ 17
10.3 Functional model of MAC sublayer architecture......................................................................... 21
10.4 Structure of MAC frames.................................................................................................................. 24
10.5 Frame coding ..................................................................................................................................... 29
10.6 Order of bit transmission................................................................................................................. 30
10.7 Frame validation ................................................................................................................................30
10.8 Medium access method.................................................................................................................... 30
10.9 Error detection ................................................................................................................................... 32
10.10 Error signalling .................................................................................................................................. 33
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Normen-Download-Beuth-RGA Fachbuch RS Gesell. für Informations- technik GmbH & Co. KG-KdNr.6885920-LfNr.2457819001-2004-07-12 12:45
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