SAE J2284-1-2002 High Speed CAN (HSC) for Vehicle Applications at 125 Kbps.pdf
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1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefr
2、om, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. TO PLACE A DOCUMENT ORDER: +1 (724) 776-4970 FAX: +1 (724) 776-0790 SAE WEB ADDRESS h
3、ttp:/www.sae.org Copyright 2002 Society of Automotive Engineers, Inc. All rights reserved.Printed in U.S.A. SURFACE VEHICLE 400 Commonwealth Drive, Warrendale, PA 15096-0001 RECOMMENDED PRACTICE SAE J2284-1 ISSUED MAR2002 Issued2002-03 High Speed CAN (HSC) for Vehicle Applications at 125 Kbps Forewo
4、rdThe objective of SAE J2284-1 is to define a level of standardization in the implementation of a 125 Kbps vehicle communication network using the Controller Area Network (CAN) protocol. The goal is to achieve a standard Electronic Control Unit (ECU) Physical Layer, Data Link Layer and media design
5、criteria which will allow ECU and tool manufacturers to satisfy the needs of multiple end users with minimum modification to a basic design. Likewise, end users will benefit in lower ECU cost achieved from the high volumes of the basic design. TABLE OF CONTENTS 1.Scope. 3 2.References. 3 2.1Applicab
6、le Publications 3 2.2Related Publications. 4 3.Definitions.4 4.Acronyms .5 5.System Level Attributes of the Network 5 5.1Message Format 5 5.2125 Kbps Communication Rate5 5.3Communication Among 32 ECUs.5 5.4Topology and Termination 5 5.5Unshielded Media. 5 5.6Communication/Survivability Under Faulted
7、 Conditions.6 5.7EMC Criteria. 6 6.ECU Requirements. 6 6.1Absolute Maximum Ratings 6 6.1.1Direct Voltage Connection 6 6.1.2Unpowered Storage Temperature 6 6.2DC Operating Parameters 7 6.2.1DC Parameters - Recessive Bus State - Bus Disconnected7 6.2.2DC Parameters - Dominant Bus State - Bus Disconnec
8、ted . 7 6.2.3DC Parameters - Recessive Bus State - Bus Connected. 7 6.2.4DC Parameters - Dominant Bus State - Bus Connected 8 SAE SAE J2284-1 Issued MAR2002 -2- 6.3ECU Internal Capacitance 8 6.4Physical Media Parameters 8 6.5Termination.8 6.6Connector Parameters8 6.7Topology Requirements9 6.7.1Multi
9、ple On-Board ECU Configuration9 6.7.2Single On-Board ECU Configuration10 6.8Off-Board Tool Requirements.10 6.8.1Off-Board Tool Capacitive Load .11 6.8.2Off-Board Tool Propagation Delay12 6.9Off-Board Tool Cable Requirements 12 6.9.1Cable Length 12 6.9.2Cable Propagation Delay 12 6.9.3Cable Configura
10、tion 12 6.10Bit Timing Requirements 13 6.10.1Nominal Bit Time (tBIT)13 6.10.2Time Quantum (tQ) .13 6.10.3Synchronization Segment (tSYNC_SEG).13 6.10.4TSEG1 (tSEG1)13 6.10.5TSEG2 (tSEG2)13 6.10.6Synchronization Jump Width (tSJW)13 6.10.7Data Sample Point (tSAMPLE)13 6.10.8Data Sample Mode .13 6.10.9M
11、edia Delay (tBUS)14 6.10.10ECU Delay (tECU)14 6.10.11Propagation Delay (tPROP)14 6.10.12Bit Timing Requirements 14 6.11ElectroMagnetic Compatibility (EMC).15 Table 1Fault Behavior.6 Table 2Absolute Maximum Bus Wire Voltage 6 Table 3DC Parameters - Recessive Bus State - Bus Disconnected 7 Table 4DC P
12、arameters - Dominant Bus State - Bus Connected7 Table 5DC Parameters - Recessive Bus State - Bus Connected.7 Table 6DC Parameters - Dominant Bus State - Bus Connected8 Table 7Internal Capacitance - ECU Disconnected 8 Table 8Physical Media Parameters for Unshielded Twisted Pair .8 Table 9Termination
13、Characteristics 8 Table 10Connector Characteristics 8 Table 11Multiple On-Board ECU Topology Requirements .9 Table 12Single On-Board ECU Topology Requirements10 Table 13Off-Board Tool Capacitive Load (without Cable Load).11 Table 14Off-Board Tool Propagation Delay (Loop Delay without Cable Delay) .1
14、2 Table 15Off-Board Tool Cable Length12 Table 16Off-Board Tool Cable Propagation Delay (One-Way Delay without Off-Board Tool Delay) .12 Table 17CAN Bit Timing - Min/Max .14 Table 18CAN Register Settings for Standard Time Quanta .15 Table 19ECU Parameters Related to Emissions16 Figure 1Multiple On-Bo
15、ard ECU Configuration9 Figure 2Single On-Board ECU Configuration10 Figure 3Off-Board Tool Parameters.11 SAE SAE J2284-1 Issued MAR2002 -3- 1.ScopeThis document will define the Physical Layer and portions of the Data Link Layer of the ISO model for a 125 Kbps High Speed CAN (HSC) protocol implementat
16、ion. Both ECU and media design requirements for networks will be specified. Requirements will primarily address the CAN physical layer implementation. Requirements will focus on a minimum standard level of performance from the High Speed CAN (HSC) implementation. All ECUs and media shall be designed
17、 to meet certain component level requirements in order to ensure the HSC implementation system level performance at 125 Kbps. The minimum performance level shall be specified by system level performance requirements or characteristics described in detail in Section 6 of this document. This document
18、is designed such that if the Electronic Control Unit requirements defined in Section 6 are met, then the system level attributes should be obtainable. This document will address only requirements which may be tested at the ECU and media level. No requirements which apply to the testing of the HSC im
19、plementation as integrated into a vehicle are contained in this document. However, compliance with all ECU and media requirements will increase the possibility of communication compatibility between separately procured components and will greatly simplify the task of successfully integrating a HSC c
20、ommunication system in a vehicle. 2.ReferencesThis specification takes precedence over all conflicts in the documents cited in this section. 2.1Applicable PublicationsThe following publications form a part of the specification to the extent specified herein. Unless otherwise indicated, the latest re
21、vision of SAE publications shall apply. 2.1.1SAE PUBLICATIONSAvailable from SAE, 400 Commonwealth Drive, Warrendale, Pa. 15096-0001 SAE J551-4Test Limits and Methods of Measurement of Radio Disturbance Characteristics of Vehicles and Devices, Broadband and Narrowband, 150 kHz to 1000 MHz SAE J551-11
22、Vehicle Electromagnetic ImmunityOff-Vehicle Source SAE J551-15 Vehicle Electromagnetic ImmunityElectrostatic Discharge (ESD) SAE J1113-13Electromagnetic Compatibility Measurement Procedure for Vehicle ComponentsPart 13: Immunity to Electrostatic Discharge SAE J11113-21Electromagnetic Compatibility M
23、easurement Procedure for Vehicle ComponentsPart 21: Immunity to Electromagnetic Fields, 10 kHz to 18 GHz, Absorber-Lined Chamber SAE J1113-41Limits and Methods of Measurement of Radio Disturbance Characteristics of Components and Modules for the Protection of Receivers used On Board Vehicles SAE J12
24、13-1Glossary of Vehicle Networks for Multiplexing and Data Communications 2.1.2ISO PUBLICATIONSAvailable from ANSI, 25 West 43rd Street, New York, NY 10036-8002. ISO 11898:1993/Amd.1:1995(E)Road Vehicles, Interchange of Digital Information, Controller Area Network (CAN) or High Speed Communication 2
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