JasPar Activity for CAN-FD...Japan . Automotive . Software . Platform . and . Architecture . JasPar Activity for CAN-FD . February 16th 2017 . WG Chief Takashi MATSUMOTO : Nissan JASPAR

Japan Automotive Software Platform and Architecture

JasPar Activity for CAN-FD

February 16th 2017

WG Chief Takashi MATSUMOTO : Nissan

JASPAR In-Vehicle LAN WG


2

Abbreviation; Japan Automotive Software Platform and Architecture

Establish; September 16, 2004

1. What is JASPAR ?


JASPAR was established to pursue increasing development efficiency and ensuring reliability by standardization and common use of electronic control

system and in-vehicle network which are advancing and complexing.

Mission Improvements in development productivity and significantly contribute to the

advancement of the world’s technology through standardization activity. Establish of the fair basis for competition of the whole automobile industry.

Achievements Represent a collective voice of the Japanese companies at the international

standardization bodies. Contribute to development of global standards.

1-1. What is JASPAR ?


Car Manufactures

Tier1 Suppliers

Software/Tool developers

Semiconductor/ Components manufactures

Carrier/ Trading/ Others

12

41

65

26

20

164 companies (and 27 Group companies / 9 academic members)

Board members *Managing organization: 3M\/year

5

Regular members *Participating WGs: 1M\/year

77

Associate Members *Utilizing WG outcomes: 0.3M\/year

82

JASPAR Membership

7

https://www.jaspar.jp/english/feedback_e.php

https://www.jaspar.jp/english/feedback_e.php


OEM’s Suppliers Software/Tool Semiconductor/Component Others

12 41 65 26 20 [Board]

5 *Toyota *Nissan *Honda R&D

*Denso *Toyota Tsusho Electronics

[Regular]

77

*Suzuki *NSK *Alps *Showa *Stability *CATS *IBM *NXP *TDK *KDDI *Isuzu *Alpine *Jtekt *Yazaki *Fuji Soft *OTSL *FTL *Microchip *Toshiba *Toyota Cenral

R&D Labs *Mazda *Ricoh *Keihin *Advics *Omron AE *Systena *NEC *MegaChips *FHI(Subaru) *Panasonic *Clarion *Aisin Seiki *Hitachi ICS *ADaC *KPIT *Marvel Japan *Deroite

Tomatsu Risk Service

*Tokai Rika *Jatoko *Pioneer *Toyo Technica *ETAS *eSOL *Tyco Electronics *Fujitsu Ten *Bosch *Aisin AW *Vector Japan *Cadence *SCSK *Cypress *Hitachi AMS *Nissin Kogyo *MIC WARE *WITZ * Aubas *Renesas *DNP Co., *Nidec elesys *Nippon Seiki *Sunny Giken *Mentor Graphics *Murata

*Calsonic Kansei *Sumitomo Electric *Fujitsu BSC *Fujitsu *Hirose Electric *Akebono Brake *Mitsubishi Electric *Toshiba Information Systems *Toyota Industries *Furukawa Electric *Change Vision *Synopsys *Continental Automotive *Trend Micro

[Associate]

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*Hyundai *KYB *Gaio *dSPACE *Eager *Infineon *Biz3 *Hino *Delphi *Ubiquitous *Mito Soft *AXE *Altera *Hosiden *Okaya *MMC *Fujikura *Mamezou *AI Corp. *USE *Hi-Lex *NTN *Ryosan *UD Trucks *Mitsuba *Elektrobit *ATS *Eiwa *Harman *Ryoden *Daihatsu *Transtron *Ixia *Xilinx *Ixia *Hitachi USLI *Sanshin

*Valeo Japan *NTT DATA MSE *ANRITSU *DIT *Lineer Technology *Hagiwara *Yamaha Motor *Fujitsu Systems West *ACCEL *ARM *Kyoei Sangyo

*NGK Spark Plug *Aisin Comcruise *Takasaki Kyodo *Analog Devices *TOMEN Eｌｅｃ. *Toyoda Gosei *Digital Contents *Tata Consultancy *Texas Instruments *Shinko Shoji *Toyo Denso *National Software *TTTech *Brison *THine Electronics *MACNICA *Magna International *Canon Software *Hitachi Hi-Tec *Sanden Automotive *Renesas

Easton *NEC Solution Innovators *HI CORP., *Yokoo *Yokogawa Meters & Instruments *Shin Dengen *NTT Docomo *Tokyo Electron Device *A&D *Alion *Secom *SHARP Business Software *Argus *Toppan

Copyright © 2017 JASPAR All rights reserved. 8

1-2. JASPAR Member List as of January, 2017


Executive Board Toyota, Nissan, Honda,

Toyota Tsusho Electronics

Steering Committee Board Members.

WG Chief

Functional Safety WG

Intellectual Property

WG

AUTOSAR Standardization

WG

Multimedia Architecture

WG

Mobile Device

Interface WG

Board Members Toyota, Nissan, Honda, Denso,

Toyota Tsusho Electronics

Administrator Toyota Tsusho Electronics

Auditor Toyota

Bluetooth Conformance

WG

Next Generation Hi-Speed

Network WG

In-vehicle LAN WG

Cyber Security

Technical WG

Cyber Security

Promotion WG

1-3. JASPAR Organization as of January, 2017

WG Leader：Nissan Sub Leader：Toyota


Technical Expert Meeting

Technical Expert Meeting(：JasPar 16 person / FRC 14 person） @2006

1-4. In-Vehicle LAN WG on Phase 1 (2006 – 2010)

The activity for FlexRay


2. In-Vehicle LAN WG on Phase 2 (2014 – 2015)

The activity for CAN-FD CAD FD Recommended Application Definitions Document This document defines network parameters, physical layers and the recommended

requirements for each application of CAN FD use case.

CAD FD Recommended Circuit Specifications This document formulates the recommended circuit specifications of the

communication circuit within the ECU that is connected to the CAN FD bus.

CAD FD Routing Evaluation Standards This document defines the evaluation standards used to determine routing

specifications of CAN FD network

CAD FD Recommended Routing Design Standard This document stipulates the recommended routing design standard of CAN FD

network system.


2-1. Recommended Application Definitions

Requirements of network Requirements of network parameters • Bit rate: Arbitration Phase: 500kbps / Data Phase: 2Mbps

• SP(N)=80%.

• SSP Offset=SP(D)=70%.

• SJW: Maximum configurable value.

• TDC (Time Delay Compensation) / TDM (Time Delay Measurement) : enabled

• Payload: Maximum 64 bytes

• Communication cycle: Minimum 10ms, maximum 1s

• Bus load: Maximum 50%

• Oscillator accuracy: 0.3%

Requirements for topology • Topology : linear bus, star bus (2 passives or more), Daisy and multi bus

• Number of Node : 5 nodes, 8 nodes, 12 nodes


2-2. Recommended Circuit Specifications

Requirements of Circuit configurations • The description range of this document is indicated with dotted lines (---).

• The electric cable characteristics are equivalent to the JASPAR CAN FD

recommended routing design standards.


2-3. Recommended Routing Standard

Routing Evaluation Standards The Phase Margin 1 (reflection) • The communication waveform asymmetry delay time, which is the cause

of waveform distortion when the Data Phase (2Mbps) changes from

dominant to recessive.



Routing Evaluation Standards The Phase Margin 1 (delay) • The routing delay time required for normal transmission and reception

between two nodes in the Arbitration Phase (500kbps).



Routing Evaluation Standards The Phase Margin 2 • The communication waveform asymmetry delay time, which is the cause of

waveform distortion when the Data Phase (2Mbps) changes from recessive to

dominant.



Recommended Routing Design Standard Bus-type routing design standard • Each bus-type network form’s recommended routing design standard

with the 5,8,12-nodes.


3. In-Vehicle LAN WG on Phase 2.5 (2016)

Improvement of topology flexibility for CAN-FD

WG Leader：Nissan Sub Leader：Toyota RSC routing design criteria Task Force

TF Leader：Denso

W/H Distortion Suppression Routing Design Standards Task Force

TF Leader：Yazaki

Members

Honda、Mazda、Hitachi AMS、Fujitsu Ten、Toukai Rika、Furukawa Electric、

Sumitomo Electoric、Murata、TDK

(2016 New Members)

Japan Automotive Software Platform and Architecture 16

3-1. RSC Routing Design Criteria Task Force Activities Purpose

To define the application process for the vehicle network of the RSC CAN-FD transceiver which is specified in CiA601-4.

Deliverables RSC CAN-FD transceiver introduction process definition document

RSC Routing Design Activities Definition of ringing time and ringing suppression requirements ・The definition of the measuring method for the ringing convergence time ・Defined by the general formula ringing allowed time in reference to the 2015 routing TF artifacts Definition of the application process for the RSC CAN-FD transceiver ・Share the information for RSC operation and effect ・Investigate the RSC application process flow Evaluation of the application effect for the RSC CAN-FD transceiver ・Examine the vehicle network topology to be evaluated ・Prior confirmation of the effect by the simulation ・Effect confirmation in the real topology


3-3.RSC Routing Design Activities Definition of ringing time and ringing suppression requirements


3-2. Information for RSC Technology

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The Principle

The main standard enactment item R; Matching impedance T; Control period (start, end)

Vdiff （CANH-CANL） 0V

2V

-2V

Impedance control OFF ON（120Ω）

ECU

Ringing generated by signal reflections repeat Reflection cause：Impedance mismatch in propagation path (Maximum reflection coefficient at the time of recessive)

Circuit Configuration

R T

Ringing waveform

CAN-H

CAN-L

State change

detection circuit

Switch control circuit

CAN-FD Transceiver ISO11898-2

Ringing suppression circuit

Impe dance

（ Dominant → recessive ）

Configuration as an optional feature (yellow part) to be added to the ISO11898-2 corresponding transceiver

Suppress the ringing to match the line-to-line impedance at the time of recessive change in the transceiver unit to prevent signal reflection

Suppress the reflected wave

Ideal waveform


Process flow

Definition of the application process for the RSC CAN-FD transceiver

3-3.RSC Routing Design Activities


Prior confirmation of the effect by the simulation Effect confirmation in the real topology

Evaluation of the application effect for the RSC CAN-FD transceiver

3-3.RSC Routing Design Activities


May 13 1st Kick-off, each company needs collecting, roles

June 3 2nd Deliberation of the definition ringing convergence time and ringing allowed time

July 1 3rd Sharing of inhibitory effect by RSC operation content and RSC Deliberation of the definition of the RSC application process (process flow)

Aug 5 4th Deliberation of the definition of the RSC application process (process flow) Deliberation of the application effect verification contents of the RSC equipped with transceivers (simulation)

Sep 2 5th Deliberation of the definition of the RSC application process (process flow) Deliberation of the simulation conditions of the RSC application examples

Oct 7 6th Definition document contents of deliberation , share simulation results of the RSC application examples

Nov 4 7th Definition document contents of deliberation, Actual evaluation result share of RSC application examples Dec 2 8th

Jan 13 9th

Feb 3 10th Review of defining document

Mar 3 11th Agreement of definition document

3-4. Work plan

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Tx Rx

2.5m 2.5m

Rx

Purpose The purpose of this activity is to expand the routing flexibility of the CAN-FD by attaching a distortion suppression circuit to the W/H branch part. This is based on the results of the routing TF conducted on term 2015.

Deliverables CAN FD recommended routing design standards Ver.2.0（Updated)

Activity Contents （１）Consideration on the routing system requirements and the routing evaluation conditions. （２）Implementing the evaluation on the routing feasibility by taking in consideration the component tolerance of the distortion suppression circuit.

；Termination Circuit

；Distortion Suppression

Circuit

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４. W/H Distortion Suppression Routing Design Standards Task Force Activities.

Phase Margin1（Reflection） Judgement Result

Unattached 434ns（NG） Attached 107ns（OK）

CANH

CANL

Attached Unattached


４-1. Consideration on The Routing System Requirements and The Routing Evaluation Conditions.

Simulation Evaluation Conditions The evaluation conditions are the same as the routing TF conducted on term 2015. Judgement Criteria；Phase Margin1（reflection）

（CAN-FD Routing Evaluation Standards compliant） Routing flexibility priority/Communication margin priority Transceiver Characteristics；typical/worst

Hardware Requirements.

ECU circuit components；worst value （CAN-FD Recommended Circuit Specifications compliant） Wires；worst value

Items Typical Worst

Differential Voltage 2.20V 3.00V

Rise Time（10-90%） 30.5ns 17.0ns

Fall Time（10-90%） 35.0ns 24.0ns

Measurement Circuit of Transceiver

Characteristics

Items Specified Value Characteristic Impedance 95～140Ω＠1MHz

Propagation Delay 5.5ns/m以下＠1MHz Conductor Resistance 25～2１0mΩ/m＠DC

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May 13 1st Discussion (required items for routing system and evaluation conditions etc.)

June 3 2nd Consideration on the routing system requirements and the routing evaluation conditions. ⇒ Review of inspection result for distortion suppression circuit element value for each number of stub for the star branch.

July 1 3rd Consideration on the routing system requirements and the routing evaluation conditions. ⇒ Phase Margin1（reflection) Worst form review used for evaluation.

Aug 5 4th Consideration on the routing system requirements and the routing evaluation conditions. ⇒ Phase Margin1（reflection）Evaluation results review.

Sep 2 5th Consideration on the routing system requirements and the routing evaluation conditions. ⇒ Discussion to reconsider the simulation evaluation conditions. ⇒Agreement completed.

Oct 7 6th Implementing the evaluation on the routing feasibility by taking in consideration the component tolerance of the distortion suppression circuit

Nov 4 7th

Dec 2 8th

Jan 13 9th

Feb 3 10th CAN FD Recommended Routing Design Standards Ver.2.0 Review

Mar 3 11th CAN FD Recommended Routing Design Standards Ver.2.0 Agreement

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4-2. work plan


Thank you

Documents

JasPar Activity for CAN-FD...Japan . Automotive . Software . Platform . and . Architecture . JasPar Activity for CAN-FD . February 16th 2017 . WG Chief Takashi MATSUMOTO : Nissan JASPAR