实例介绍
【实例截图】
【核心代码】
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
Copyright International Organization for Standardization
Provided by IHS under license with ISO Sold to:IHS Standards Store Purchase, 348409
Not for Resale,05/17/2006 11:48:43 MDT No reproduction or networking permitted without license from IHS
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ISO 11898-1:2003(E)
iv © ISO 2003 — All rights reserved
10.11 Overload signalling ...........................................................................................................................33
10.12 Bus monitoring ...................................................................................................................................33
11 LLC and MAC sublayer conformance ...............................................................................................33
12 Physical layer ...................................................................................................................................33
12.1 General .................................................................................................................................................33
12.2 Functional model ...............................................................................................................................33
12.3 Services of PL .....................................................................................................................................34
12.4 PLS sublayer specification ..............................................................................................................35
12.5 PLS-PMA interface specification ....................................................................................................39
13 Description of supervisor...................................................................................................................39
13.1 Fault confinement................................................................................................................................39
13.2 Bus failure management ...................................................................................................................44
Bibliography......................................................................................................................................................45
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