SAE SURFACE VEHICLE J2716TM APR2016 INTERNATIONAL INFORMATIONREPORT Issued 2007-04 Revised 2016-04 Superseding J2716 JAN2010 (R) SENT - Single Edge Nibble Transmission for Automotive Applications RATIONALE 1. Clarified clock variation refers to variation in clock tick time. 2. New appendix for High Speed 12 bit Sensors. 3. Changes for initialization and non-usage of serial message. 5. information. 6. Clarification to EMC Susceptibility testing guidelines for Erroneous SENT frames which remain undetected by the SENT CRC 7. Added Appendix A.6 Temperature Sensor requirements 8.Added APPENDIX E 9. Added APPENDIX G for recommended connector 10. Created APPENDIX H (SENT Data Frame Formats) and moved generic sensor requirements from APPENDIX A to APPENDIX H 11. Changes to support higher current sensors 12. Added E.3 Error Messages and Signals 13.Added A.7Position Sensors and Combined Position Temperature Sensors 14. Added Overview of SENT standard structure (3.2) SAE Technical Standards Board Rules provide that: "This reportis 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 therefrom, is the sole responsibility of the user SAE reviews each technical report at least every five years at which time it may be revised, reafirmed, stabilized, or cancelled. SAE invites your writen comments and suggestions Copyright @2015 SAE International All rights reserved. No part of this publication may be reproduc stored in a retriey or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACEADOCUMENTORDER: Tel: 877-606-7323 (inside USA and Canada) SAE values your input. To provide feedback Tel: +1 724-776-4970 (outside USA) on this Technical Report, please visit Fax: 724-776-0790 [email protected] http:/www.sae.org/technical/standards/J2716201604 Email: SAE WEB ADDRESS: http://www.sae.org Page 2 of 120 SAE INTERNATIONAL J2716TMAPR2016 TABLE OF CONTENTS 1. SCOPE 1.1 Overview 2. REFERENCES.. 6 2.1 Applicable Documents 2.1.1 SAE Publications.. 2.1.2 Other Publications.. 6 3. DEFINITION OF TERMS .. 6 3.1 Glossary. 6 3.2 Overview of SENT standard structure . 4. ACRONYMS, ABBREVIATIONS, AND SYMBOLS 10 5. SENT SYSTEM REQUIREMENTS.. 5.1 General Requirements... 10 5.2 11 5.2.1 Transmission Sequence.... 11 5.2.2 Transmission Properties of Calibration/Synchronization Pulse 12 5.2.3 Transmission Properties of Nibble Pulse ... 12 5.2.4 Status and Communication Nibble.... 13 5.2.5 Checksum Nibble. 17 5.2.6 Pause Pulse (Optional).... 17 5.3 Transmission and Reception of Message.. 18 5.3.1 Transmission of Message ... .18 5.3.2 Adjustment of Received Message Nibble Lengths 18 5.3.3 Received Message Diagnostics.... 19 5.3.4 Reset....... 21 5.4 ChecksumNibbleDetails.... 21 5.4.1 ErrorsDetectedandNotDetectedbyChecksum. 21 5.4.2 CRC Implementation.... .24 6. SENT PHYSICAL LAYER OPERATION..... .25 6.1 NormalCommunicationModeandTransmissionRate .25 6.2 Clock Tolerance . .26 6.2.1 Transmitter-Receiver Communications... 26 6.3 Electrical Interface Requirements .... 27 6.3.1 Transmitter Driver Requirements... .27 6.3.2 Receiver Input Requirements.... 33 6.3.3 Bus Wiring Harness and ECU Connectors ... 35 6.4 ESD Immunity .. 6.5 EMC Testing Requirements.. 6.6 Fault Protection Modes ... 36 7. CONFIGURATION SHORTHAND 36 7.1 Shorthand Definition... .36 8. NOTES 37 8.1 Revision Indicator.... 37 J2716TMAPR2016 SAE INTERNATIONAL Page 3 of 120 AppendixA Recommended application specific protocols 38 Appendix B Checksum examples. 51 Appendix C Testing guidelines.. Appendix D SerialchannelmessageIDS .58 AppendixE Common sensor definitions .... .76 AppendixF Fast channel multiplexing .. 93 Appendix G SENT connectors . 101 Appendix H SENT data frame formats.... 103 Appendix I Alternative receiver circuit