Specification of CAN Network Management
AUTOSAR CP R22-11
5 of 118 Document ID 13: AUTOSAR_SWS_CANNetworkManagement
Table of Contents
1 Introduction and Functional Overview ................................................................... 8
2 Acronyms and abbreviations.................................................................................. 9
3 Related documentation ........................................................................................ 10
3.1 Input documents ................................................................................................. 10
3.2 Related standards and norms ............................................................................ 10
3.3 Related specification ........................................................................................... 10
4 Constraints and assumptions ............................................................................... 12
4.1 Limitations ........................................................................................................... 12
4.2 Applicability to car domains ................................................................................ 12
5 Dependencies to other modules .......................................................................... 13
5.1 File Structure ....................................................................................................... 14
5.1.1 Code File Structure .................................................................................. 14
5.1.2 Header File Structure ............................................................................... 14
6 Requirements traceability .................................................................................... 15
7 Functional specification ........................................................................................ 23
7.1 Coordination algorithm ........................................................................................ 23
7.2 Operational Modes ............................................................................................. 24
7.2.1 Network Mode .......................................................................................... 24
7.2.2 Prepare Bus-Sleep Mode ......................................................................... 27
7.2.3 Bus-Sleep Mode ....................................................................................... 29
7.3 Network states .................................................................................................... 30
7.4 Initialization ......................................................................................................... 30
7.5 Execution ............................................................................................................ 31
7.5.1 Processor architecture ............................................................................. 31
7.5.2 Timing parameters ................................................................................... 31
7.6 Network Management PDU Structure ................................................................ 32
7.7 Communication Scheduling ................................................................................ 34
7.7.1 Transmission ............................................................................................ 34
7.7.2 Reception ................................................................................................. 37
7.8 Bus Load Reduction Mechanism ........................................................................ 37
7.9 Additional features .............................................................................................. 38
7.9.1 Detection of Remote Sleep Indication ...................................................... 38
7.9.2 User Data ................................................................................................. 39
7.9.3 Passive Mode ........................................................................................... 40
7.9.4 Network Management PDU Rx Indication ............................................... 41
7.9.5 State change notification .......................................................................... 41
7.9.6 Communication Control ............................................................................ 41
7.9.7 Coordinator Synchronization Support ...................................................... 42
7.10 Car Wakeup ........................................................................................................ 42
7.10.1 Rx Path ..................................................................................................... 42
7.10.2 Tx Path ..................................................................................................... 43
7.11 Partial Networking ............................................................................................... 43
7.11.1 Rx Handling of NM PDUs ......................................................................... 43
7.11.2 Tx Handling of NM PDUs ......................................................................... 45
