2011 MOST-Informative Screen

MOST Informative

MOST Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Heading for rollout, MOST150 will soon be on the road. Besides looking at ongoing activities, the latest MOST experiences, research results and future visions are introduced. MOST Technology solutions and in-depth information will be provided at conferences and public trade exhibits.

MOST Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Various aspects of communication over MOST are discussed by MOST experts:

MOST150 Switch Matrix for Testing Various Telematic System •ConfigurationsComprehensive Look into the Integration of Driver Assistance Systems •into the Gross Network Vehicle

MOST News . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Recent news of member companies such as Avago, Goepel, Hamamatsu, Melexis, Renesas, Ruetz System Solutions, SMSC, Telemotive, and Vector contributing to and using MOST Technology.

MOST Cooperation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 The MOST Cooperation welcomes new member companies. MOST Technology is now implemented as part of the infotainment systems in over 110 car models.

MOST Outlook . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Upcoming MOST conferences and trade shows worldwide with the MOST Cooperation presenting highlights and achievements.

// Issue 7

MOST-Informative-7_2011_2.indd 1 29.09.2011 11:41:55 Uhr

2 // MOST Informative // October 2011 // Issue 7

Baden-Baden, Germany. In November,

the Asian automotive world is

invited to attend the 12th MOST

Interconnectivity Conference Asia in

Tokyo, Japan. Concurrent with the

14th All Members Meeting in 2012,

the fourth MOST Forum invites

automotive professionals to the one-

day conference and exhibition in

March 2012. We look forward to

meeting you at one of our public

appearances in the near future.

Please enjoy the news and highlights

by the MOST Cooperation and our

member companies. We welcome

your feedback and contributions for

future editions of this newsletter.

Dr. Christian Thiel Administrator of the MOST Cooperation

partners, representing a broad spectrum

of MOST know-how. Starting out with

an introduction to the MOST standard

and Cooperation, the book describes

the general communication architecture

of an automobile using MOST. The

subsequent chapter provides an

insight into MOST Technology. Two

completely new chapters explaining

MOST150 have been added. Followed

by manufacturing and processing of

MOST components, the book concludes

with the introduction of gateways and

various MOST applications.

www .mostcooperation .com

Dear Readers,

The MOST Cooperation is approaching

a major milestone with the third MOST

generation MOST150 based on the

MOST Specifications Rev. 3.0 heading

towards implementation. The newest

MOST generation is about to hit the

road and we are proud that our core

partner members Audi and Daimler will

be the first carmakers to integrate

MOST150 into series production

vehicles following the new revision of

the MOST Specifications. This reflects

our path of success, with fast-growing

acceptance of this de-facto automotive

network standard by key carmakers

worldwide. The number of vehicle

models relying on the MOST

infotainment backbone already totals

over 110 vehicle models on the road

today. A look into the MOST future has

been offered at this year's MOST

Forum. Several papers presented

research results and visions for

possible future scenarios and

applications, including gigabit

transmission over POF.

The MOST Cooperation will be in

dialog with the public at several

upcoming events. In mid-October, we

will exhibit at the VDI Congress

"Electronic Systems for Vehicles" in

MOST Highlights

This second edition of the

comprehensive and easy to understand

standard work is titled "The Automotive

Multimedia Network - From MOST25 to

MOST150". "The MOST Cooperation

has assigned this expanded and

updated issue of the MOST Book to

provide the latest status by including

MOST150 – the third generation

of MOST, which is close to rollout,"

stated editor Prof. Dr.-Ing. Andreas

Grzemba. "Providing access to all three

technology generations, this qualified

compendium addresses electronics

development professionals to obtain an

overview and make MOST Technology

easy to understand and apply. But

project managers and executives who

are concerned with the transmission

of multimedia data will also receive

an excellent insight." The authors are

a team of numerous specialists from

member companies and competence

Second Edition of MOST BookUpdated and Expanded MOST Book Includes MOST150


http://www.mostcooperation.com

Issue 7 // October 2011 // MOST Informative // 3

MOST150 Includes Coaxial Cable Transmission

MOST Highlights

The MOST Cooperation has released

the MOST150 Electrical Physical Layer

Sub-Specification Rev. 1.0 based on

coaxial cable. "This MOST150 coax

physical standard complements the

existing MOST150 optical physical

layer in the infotainment domain,

especially for OEMs who have

stringent preferences in the electrical

physical layer," stated Dr. Wolfgang

Bott, Technical Coordinator of the

MOST Cooperation.

This specification was derived in

a straightforward process from

the MOST Physical Layer Basic

Specification. Its principal structure

is similar to the existing MOST150

optical physical layer specification.

Both physical layers are interoperable:

MOST150 supports various physical

layers and enables various topology

options.

Future-proof and Cost-efficient

Network

Additionally, the well known

advantages of the MOST150 optical

physical layer are kept. MOST150 is

a multi-channel network (control data,

synchronous and packet channel)

which allows the parallel usage of

all these services through one

network. It provides an isochronous

channel for video data transmission,

among others. It also enables IP

data communication, providing the

automotive-ready Ethernet channel

according to IEEE 802.3. with freely

configurable bandwidth from 0 to

nearly 150 Mbit/s. MOST150 supports

the safety layer concept to enable

fail-safe application up to SIL level 3

according to IEC 61508 and ASIL C

according to ISO 26262. Meeting

these requirements, and due to its

inherent synchronicity, the MOST

standard provides an effective and

cost-efficient network solution that is

resilient and future-proof.


Schematic of a coax transmission line, indicating the compensation of the cable attenuation by an equalizer

(Source: MOST Book, 2011)

MOST Cooperation Releases MOST150 Electrical Physical Layer Specification




MOST Highlights

The third MOST Forum on April 5, 2011

in Frankfurt has been directed by the

theme 'MOST150 – Next Step: Rollout'.

The broad international audience

comprised over 165 professionals from

the automotive electronics industry

and academia. In addition to this

applicatory approach to MOST

Technology demonstrated by Audi and

Daimler, further topics at this

international infotainment conference

included MOST150 testing and visions

for possible future scenarios. Speakers

from the automotive industry and

academia presented experience

reports, research results and future

outlooks.

In the well-attended exhibition area,

numerous companies presented

their innovative MOST solutions

and applications. Amongst the

exhibitors was the MOST

Cooperation, with a demonstrator

showing the seamless integration

capabilities of applications with

MOST that use Ethernet stacks. The

central MOST hub device showed

how different physical layer and

topology options may be used

depending on application

requirements. Audi, BMW and

Daimler brought in some of their

latest car models to demonstrate

MOST applications, such as rear

seat entertainment and Internet

access. Avago Technologies,

Continental, Elektrobit, GADV,

Goepel electronic, Hamamatsu

Photonics, K2L, LeCroy, Melexis,

Ontorix, Ruetz System Solutions,

SMSC, Telemotive, TTTech

Automotive, Vector Informatik, and

Yazaki also exhibited their latest

products and services.

MOST150 – Next Step: Rollout

MOST Technology is close to the

major milestone of moving onto the

roads with its third generation: Audi

and Daimler will be the first

carmakers to integrate MOST150

into series production vehicles. Just

recently, the number of vehicle

models relying on the first two MOST

generations, MOST25 and MOST50,

has hit the one hundred mark. Soon

the next generation MOST150 will

be on the road, offering unique

advantages: a speed upgrade

because of its further development

of existing transmission technology;

and extensive support of digital

video transmission and Ethernet/IP

applications. With the new Ethernet

compatible packet channel,

MOST150 enables the seamless

integration of consumer electronics

systems, Internet-based services,

and established standards from the

IT industry. In addition, the MOST

community is taking one step

beyond, starting to look further into

the future towards a new generation

of MOST by considering various

MOST150 Taking Off

technology directions. Aspects

under discussion include possible

and reasonable bandwidth increases

as well as upcoming driver assist

and infotainment applications.

Daimler Confirms Go for MOST150

In his keynote speech, Peter

Häußermann, Head of Telematics

Electrics/Electronics at Daimler,

provided a summary of more than 10

years' experience in MOST

development and gave insight into the

ongoing MOST150 integration

procedure. The requirements he listed

for the next infotainment systems

include enhanced video transmission,

Internet based services, further

integration of consumer electronics

devices, premium sound solutions,

multi-seat capabilities and split view,

as well as harmonized communication

links. At Daimler, all necessary

measures for validating MOST150

have been taken: MOST150 pre-

projects with tier1 suppliers have been

conducted. Mechanical integration,

including soldering and environmental

testing, has been tested with tier1

suppliers. In cooperation with external

partners, Daimler set up evaluation

platforms. In addition, an independent

validation of INIC firmware, NetServices

and INIC interfaces (e.g. MediaLB)

has been performed. Further tests

incorporated the bandwidth analysis of

the MOST Ethernet channel. Tool

Flying over the latest MOST Experiences, Research Results, and Future Outlook Presented at the MOST Forum in April



MOST Highlights

manufacturers have been involved

since early in the validation process.

As a result, Daimler attested that

MOST150 has successfully passed

comprehensive evaluation and is

ready for mass production. Peter

Häußermann concluded with the

outlook that Daimler will introduce

MOST150 in Mercedes-Benz S-Class

vehicles in 2013.

Audi Will Start MOST150 Rollout

into the High Volume Market

Audi presented details on the

introduction of MOST150 into series

projects. Martin Jakob, responsible

for MOST diagnostics and MOST data

definition at Audi, reported that after

successful technology verification,

MOST150 has been forwarded into

series development to be used as the

network technology for the ‘Modular

Infotainment System’ (MIB) platform.

Hardware tools are available in

production quality and are fully

integrated into the car maker’s tool

chain. MOST150 series development

at Audi will take place in two phases:

step one will be the first introduction

of MOST150 in infotainment systems

with a standard feature set. This

rollout into the high volume market will

start with Audi A3 vehicles in 2012

followed by further cars in the

Volkswagen group. In phase two,

more sophisticated applications

needed by cars of higher classes will

be added as, for example, cluster

instruments, online services, rear seat

entertainment, and video over MOST.

Following this, the technology will roll

out successively through a wide range

of cars in the Volkswagen group. Audi

is confident that MOST150 will

become the technical standard for

premium infotainment networking.

MOST150 on the Test Bench

For car buyers, a failure-free operation

of the vehicle is mandatory. Therefore,

carmakers insist on high reliability and

quality for all electronic control units

(ECU) and systems in the vehicle. For

safety reasons, carmakers and their

device- and sub-suppliers have

installed test processes along the

complete supply chain. Measures for

safeguarding devices and systems

are considered during the creation of

specifications, via design and

implementation, and up to validation,



MOST Highlights

verification, and integration of devices

into the systems.

SMSC demonstrated how to test and

validate the new isochronous and IP/

Ethernet features of MOST150. All

new features and capabilities can be

experienced easily with existing

MOST150 tool solutions. Ideas,

concepts and experiences with a

benchmark of MOST components

were introduced by Relnetyx in order

to compare products with functionality

for the best performance based on the

requirements of the automotive

application. Goepel electronics shared

their experience in end-of-line testing

for quality assurance. Ring break

diagnosis or other diagnosis through

the electronic control line (ECL) has

been considered by Elektrobit.

As Daimler and FZI (Forschungs-

zentrum Informatik, Karlsruhe)

demonstrated, the efforts of a real

hardware prototype and automated

analysis of multiple communication

scenarios can be reduced by using a

virtual prototype. With a virtual model,

it is possible to evaluate the per-

formance characteristics of different

system configurations at an early stage

of development. Furthermore, in order

to allow the verification of distributed

software in early design phases, a

flexible and efficient virtual prototyping

approach to perform module and

integration tests for protocol or

application software has been

proposed by FZI. The results illustrate

that it is possible to reuse test cases

from the virtual prototype to test the

software on the real hardware without

any modifications.

MOST Road into the Future

As always, even before one technology

generation is close to its peak, the

question arises: “What comes next?”

asked Harald Schoepp of SMSC.

In-vehicle infotainment is about to

saturate in terms of new and useful

functions and features. Connectivity

outside the car such as LTE or car-to-x

communication is becoming much

more important than pure

entertainment. More and more

IP-based applications will arise,

making extensive use of the MOST

Ethernet Packet channel (MEP). Here,

any standard protocol stack can be

used on top of MOST, providing both

the advantages of a synchronous

network and a powerful data pipe for

IP/Ethernet data. Equally important is

an appropriate high-speed interface

connecting the network to equally

high-speed processing devices,

making use of the full network

bandwidth without loss. Payload

efficiency and network considerations

for MOST and Ethernet have been

discussed by Continental, resulting in

ideas for the coexistence of these two

network technologies.

MOST Speeding up

For future in-car infotainment systems,

high-speed communications networks

such as MOST150 are necessary.

However, with increasing information

data, even higher data rates in the

gigabit per second range might

become of interest. Alpine, together

with Stuttgart University, presented

an investigation and simulation of

high-speed gigabit transmission for

POF-based MOST networks. Several

solutions for meeting this challenge

are possible, proving that gigabit per

second transmission over plastic

optical fiber (POF) can be achieved. In

addition, the new working group

412.7.1 inside the DKE (Deutsche

Kommission Elektrotechnik Elektronik

Informationstechnik) as well as

KDPOF presented proposals to reach

a data rate of 1 Gbit/s or more. Yazaki

introduced small MOST optical

connectors that can be used for high-

speed solutions over 150 Mbit/s in the

future.

MOST150's New Features in a

Series Project

The bandwidth provided by MOST150

enables Daimler to realize new

features, such as access to Internet

services, as well as increased

requirements for connectivity to

consumer devices. While in the next

system Daimler has begun to transmit



MOST Highlights

certain video streams over the

MOST150 network, a future goal is to

extend this to video streams from

slave devices (e.g., a TV tuner). Thus

the number of connections will be

further reduced and a more consistent

system architecture will be achieved.

Besides supporting IP for Internet

access, IP-based protocols and

mechanisms have been successfully

used for other use cases. Using

further proven standards from the IT

world will help to introduce new

features earlier and easier.

Carmaker's Perspective:

Challenges MOST Will Have to Face

In addition to the ongoing imple-

mentation, Audi also presented an

outlook on upcoming challenges.

Regarding future use cases, several

requirements have to be looked at. The

first focus is on performance and

innovation of the migration of features

from consumer electronics such as

Internet radio and video, UPnP

(Universal Plug-n-Play), online

connectivity, and WiFi/UMTS/LTE

connectivity. Secondly, continuity and

costs have to be considered. Legacy

features have to be kept and

performance has to be improved. Last

but not least, the connectivity of

advanced driver assistance systems

(ADAS) will be a major topic, with focus

on performance and architecture. In

terms of interconnecting ADAS and

infotainment, the divergence of safety

requirements and alternative topology

are factors to be further worked on.

The flexibility of the MOST network

technology has already been

demonstrated by showing star, daisy-

chain, tree, and other topologies as

well as different physical layers: POF,

coax based electrical physical layer,

and shielded and unshielded twisted

pair (STP/UTP) copper wires.

The Way Ahead

The development of new functions

and features, speed grades and

physical layers has always been

driven by the MOST Cooperation,

collecting the real market requirements

of a broad community. Concerning

the absolute speed grade for the

future, technically, the range of 1 to 5

Gbit/s has been investigated already.

But the important questions are: What

does the automotive market really

need? And, even more essential, what

is the overall system cost, including

an automotive-grade network

interface controller, physical medium

and connector system? Some

boundary conditions are clear already:

the bit-rate will be beyond 1 Gbit/s,

both the optical and electrical physical

layer will be available, and of course,

MOST will stay a synchronous

network providing a payload efficiency

of nearly 100 percent, with the ability

to seamlessly transport IP packet

data.





MOST Highlights

The MOST Cooperation will exhibit the

latest highlights at the 15th International

VDI Congress "Electronic Systems for

Vehicles" on October 12-13, 2011 in

Baden-Baden (Germany). On October

12, 2011 at 5:45 PM, Stephan Esch,

AUDI AG, and Stefan Wachter, Daimler

AG, will present "MOST150 –

Technology Validation and Series-

Production Readiness". After reporting

on evaluation and results of common

activities by Audi and Daimler, the

presenters will speak about know-how

and lessons learned from running

MOST150 serial development. They

will conclude with their perspective on

possible future MOST applications.

With MOST150 being one step before

rollout, MOSTCO demos at stand 75 will

focus on the seamless integration

capabilities of Ethernet based devices

with MOST. In addition to transporting

high-definition audio and video within

the car, MOST150 provides an

automotive-ready physical layer for

Ethernet. This way, MOST is open to a

broad variety of IP-based applications

such as connected services and Internet

access. Further included will be various

aspects and application features based

on MOST150. Looking at the expanding

areas of automotive use cases, one

aspect will be on meeting the demand

of the growing variety of consumer

electronic devices in the car.

The demo setup will cover typical

Ethernet based applications: An

Ethernet gateway will lift Ethernet

Packets from a 100BaseT Network to

a MOST Network and vice versa. A

web server will provide web content to

other participants in the MOST

network. A Network Attached Storage

(NAS) will provide a file system to other

participants in the MOST network. A

UPnP server / client architecture can

be directly applied to the MOST system

to stream audio / video data from

UPnP server to the iPad. The central

MOST Hub device shows how the

different physical layer and topology

options may be applied according to

the application requirements.


MOST Exhibit at 15th International VDI Congress "Electronic Systems for Vehicles"Audi and Daimler Will Present "MOST150 – Technology Validation and Series-Production Readiness"

Seamless Integration Capabilities of Ethernet based Devices with MOST




MOST Highlights

On November 17, 2011, the MOST

Cooperation will host the 12th MOST

Interconnectivity Conference Asia. In

Tokyo, Japan, representatives of the

MOST Cooperation will present an

update on technology highlights of the

organization and the MOST

standardization roadmap to Asian

carmakers and their suppliers. During

the morning session, members of the

Steering Committee will give an

overview which will be expanded by

various member presentations in the

afternoon, as well as by various

technical demonstrations. "This year's

MOST Conference in Asia will focus

on the third generation of MOST

Technology - MOST150 - already

heading towards rollout," stated Dr.

Christian Thiel, MOST Cooperation

Administrator. "We very much

acknowledge this major effort and

invited speakers from the automotive

electronics industry to contribute to

the conference program. Several

professionals involved with MOST

Technology will present the latest

MOST designs, solutions, experiences,

research results, and future outlooks."

Program highlights will include

MOST150 implementation update and

experiences including evaluation and

results of carmakers' activities, as well

as know-how and lessons learned

from running MOST150 serial

development. Further presentations

will introduce latest MOST devices

and systems including optical

12th MOST Interconnectivity Conference Asia

MOST Forum 2012

MOST Cooperation Announces Conference Program

Automotive Professionals Will Meet for Latest MOST Technology Highlights and Future Outlook

The fourth MOST Forum will take place

on March 20, 2012 in Stuttgart /

Esslingen (Germany). Concurrent with

the MOST Cooperation’s All Members

Meeting, this one-day industry event

on automotive infotainment technology

will again present latest and future

technologies and application highlights

based on MOST. The upcoming MOST

Forum will provide an ideal venue to

share ideas and experiences, and to

discuss the latest news on this

de-facto automotive networking

standard. This international conference

and exhibition will bring together top

professionals from the automotive

electronics industry and academia to

exchange information and results of

their recent work on the leading

infotainment networking technology.

The broad international audience will

be composed of researchers,

designers, engineers, system

developers, as well as purchasers and

journalists, up to managers of the

industries involved. The conference

program will be announced in

November 2011.


connectors, test solutions and ongoing

specification activities such as High-

bandwidth Digital Content Protection

(HDCP) on MOST, for example. An

outlook into the MOST future together

with a perspective on possible future

MOST Technology aspects and

applications will round off this high

quality conference program.






MOST Technology

MOST150 Switch Matrix for Testing Various Telematic System Configurations

Mercedes-Benz’s MOST Technology

based telematic systems consist of

various control devices and sub-

components, depending on the

features selected and existing market

conditions. These include market

specific applications such as satellite

radio in the USA or HDTV in Japan, as

well as customer selectable options

such as high-end sound or rear seat

entertainment. The MOST150 devices

are connected together in a ring

topology, whereby the respective

position of the individual device

depends on the vehicle series. The

resulting number of possible

MOST150 telematic configurations

corresponds to a multiple of the

number of necessary test runs to

cover all possible connection

combinations. Mercedes-Benz’s

quality requirements call for extensive

testing in various development stages

before the actual start of production.

Test engineers should use their

capabilities for the planning,

development and analysis of the tests

and not have to deal with changes in

test configurations. For a stable

telematic configuration, many

different, very important tests must be

carried out. Ring start-up behavior,

ring break, or switching to a new radio

station while simultaneously accepting

an external call are just a few of the

realistic internal test cases.

In close cooperation with the

Steinbeis-Transferzentrum Micro-

electronics and Automation Ulm

(Germany), Daimler engineers

developed a MOST150 switch matrix

that simplifies testing of the telematic

network. The switch matrix is built in a

1 HE 19-inch metal case like a cross

switch with 8 inputs and 8 outputs. It

is controlled by means of software

that can be easily embedded in the

system configuration test software. A

further option of the switch matrix is a

so-called burst mode with which a

precisely defined number of ring

breaks can be switched at set times.

16 electrical output signals (8 receiver

status outputs, 8 receiver output

signals) can be used to trigger the

measurement signals.

The MOST150 switch matrix enables

construction of a test bench for testing

various configurations. This leads to

automatic test runs without manual

intermediate steps with a duration of

up to 5 days. Another use case is, for

example, to change the ring position

of a MOST logging or stress tool,

which means an advantage in

thorough error analysis. Experiences

with MOST25 have shown that the

use of automatic test configurations

can prevent making additional errors

during test setup.

Tilo Nothacker (Daimler AG)

Stefan Poferl (Daimler AG)

MOST150 8x8 switch matrix



MOST Technology

Safer Driving with Driver Assist SystemsComprehensive Look into the Integration of Driver Assistance Systems into the Gross Network Vehicle

Driver assistance systems are about to

conquer the market. The latest studies

predict a growth from 9 to 62 million

units per year throughout the years 2005

to 2012. Driver assistance systems are

on their way to becoming an integral

part of the vehicle – with interfaces to

many different clusters of electric/elec-

tronic systems in the car. Comparable

to the human body, numerous functions

have to be implemented and networked:

sensors – like for example radar, camer-

as or ultra sonic – processing units and

actuators like steering, brakes, ESP and

airbag. Taking into account the com-

plexity of the use cases and the different

vehicle areas that have to exchange

information, it is obvious that an ade-

quate network infrastructure is of essen-

tial importance for the efficiency of the

system. From a functional point of view

driver assist systems have started to

enlarge the functional range of classical

infotainment systems.

With the increasing spread of driver

assistance systems, more and more

questions come to the fore on the techni-

cal and commercial optimization poten-

tial of the complete system architecture.

Infotainment and driver assistance have

an equal need for cost efficient gross

building blocks from which subsets can

be derived for different vehicle classes,

expansion stages and special edition

packages. In doing so, the layout of the

functional packages, the partitioning of

the functional packages in respect to the

system components, and the networking

of the components have to be examined.

Comparing the needs of driver assis-

tance to those of the infotainment world

about 10 to 15 years ago, one can find

amazing analogies. The infotainment

system components were then made up

of radio and first TV receivers, amplifiers,

telephones, navigation processors and

voice control systems. The challenge lay

in a suddenly strongly expanded func-

tionality with equally undefined interfac-

es. The overall system was fragmented

indeed, but at first it was arbitrarily diffi-

cult to connect the system components

due to a lack of both an appropriate

transport medium and standardized

interfaces (APIs). This was the hour of

birth of the infotainment networking via

MOST.

Considering the classical domains of

electric/electronic architectures in vehi-

cles it easily becomes clear that with the

introduction of driver assist systems, a

new, to date non-existent domain has

to be created. And instantly the ques-

tion arises, which network technology

might be suited for that new domain.

Does one of today’s existing technolo-

gies - CAN, FlexRay, LIN or MOST –

have the potential to accomplish the

task at hand? Or does it require another

show of strength to introduce a technol-

ogy not yet established in the car envi-

ronment?

As already mentioned, the analogies in

the assignment of tasks for infotainment

and driver assistance are enormous. This

is particularly true on the networking



MOST Technology

level. The MOST network currently has

three speed grades, 25, 50 and 150

Mbit/s and optical as well as electrical

physical layers. For the field of assis-

tance, adaptations in details are neces-

sary, but these will only be expansions to

a proven and tested network. The basic

principle fits completely: sufficient high

bandwidth at justifiable cost, excellent

robustness in vehicles – proven in more

than 110 car models with MOST within

ten years of field experience – and an

extremely stable basic structure for the

standardization of application interfaces.

An adequate functional system model

like MOST offers a method of handling

the complete driver assistance system.

Special attention here applies to the con-

sistency of the procedure down to hard-

ware realization. To allow for information

exchange amongst functional blocks,

the functions – analog to the infotain-

ment world – will be realized on control

devices and control devices are con-

nected by MOST. Without breach the

functional system model will be realized

on the communication level, and in doing

so the relevant technical features for the

driver assistance system will be

addressed.

The latest generation MOST150 already

fulfils the requirements to the greatest

possible extent. And like in an infotain-

ment system, the functional system

model can be used for internal device

communication so that for the applica-

tion it does not matter whether the com-

munication partner is sitting in the same

control unit or connected across the

network. The flexibility of the MOST

network has already been proven: dif-

fering topologies such as star, chain

and tree are equally possible, as are

diverse physical layers: polymer optical

fiber (POF), coax based electric physi-

cal layers as well as shielded or

unshielded, twisted copper cables

(STP/UTP). The MOST150 Specifica-

tion Rev. 1.0 for the electric physical

layer for MOST150 via coax cable has

recently been released. Both physical

layers are fully compatible. Depending

on the grade of safety relevance, an

adequate safety software layer that was

not needed in the infotainment domain

has to be added to one or the other

application. The feasibility has already

been proven by corresponding studies

in cooperation with the German TÜV.

Harald Schoepp (SMSC)



MOST News

Renesas Electronics announced the

availability of six new 4th-generation

(X4 generation) V850-based S-series

microcontrollers (MCUs), ideally suit-

ed to car infotainment systems and

networking. The new products include

two MCUs from the V850E2/SG4-H

group with 100 pins, two MCUs from

the V850E2/SJ4-H group with 144

pins and two MCUs from the V850E2/

SK4-H group with 176 pins. The evo-

lution in car infotainment systems and

networking within the car requires the

introduction of protocols such as

Ethernet and MOST to support high

bandwidths and reliable data transfer.

This is in addition to the well-estab-

lished automotive networks such as

CAN and IEBus (Inter Equipment Bus)

also supported by Renesas Electron-

ics’ V850E2/Sx4-H family of MCUs.

Key features of the V850E2/Sx4-H

MCUs include enhanced networking

functionality by adding an Ethernet

PHY and MOST network interface

controller to the V850/E2/Sx4-H

The MOST infotainment bus is best

suited to meet future in-car infotain-

ment system requirements. At least

this is the result of a survey among

readers of EE Times Europe automo-

tive. The survey was conducted in the

time June through August on the EE

Times Europe automotive website.

The participants were asked to

express their preference for the next-

gen infotainment bus system. They

could chose among four alternatives:

MOST, Ethernet, IEEE 1394 (also

known as FireWire) and "Other". The

results show a clear lead for MOST. 59

percent of the 379 participants gave

their vote to the technology developed

by the MOST Cooperation. Ethernet

ranked second, with 29 percent of the

respondent. IEEE 1394 ranked a dis-

tant third place with only 7 percent of

the votes. The remaining 7 percent

(rounding effects disregarded) voted

for "others". which could include serial

point-to-point connections such as

the Serializer-Deserializer (SerDes)

approach. (Christoph Hammerschmidt)

www .automotive-eetimes .com

New 32-bit Microcontrollers Support MOST Networks

MCUs. High performance for network-

ing and system control in parallel is

possible because of the incorporated

32-bit V850E2M CPU core, which has

an excellent performance ratio of 2.5

DMIPS/MHz (Dhrystone MIPS [million

instructions per second] per mega-

hertz). Furthermore, it offers a wide-

range lineup for several applications

and a rich development environment.

www .renesas .eu

Poll by EE Times Europe Attests: Infotainment Designers prefer MOST


http://www.automotive-eetimes.com

http://www.renesas.eu


MOST News

GOEPEL electronic provides PXI 6161,

an all-new communication controller

supporting MOST150 based on the

highly powerful Series 61. Using this

new hardware platform, users are able

to individually and flexibly configure

the controller according to their

individual needs. Using PowerPC

architecture, the host PC is relieved

and valuable bandwidth for additional

application is obtained, enabling

complex and CPU-intensive processes

to be executed on the 6161 card.

Based on the latest MOST150

integrated circuit INIC OS81110 and

the corresponding SpyNIC, the PXI

6161 is fully capably of stimulating and

streaming MOST content. A number of

additional functions are fully integrated

Avago Technologies is proud to

announce the release of the world's

first reflow-capable MOST25 fiber

optic transceivers (FOTs) for optical

MOST networks. The reflow soldering

capability is in accordance with JEDEC

standard J-STD-020D and leverages

pin-in-paste technology to enable

assembly of the devices on reflow

soldering manufacturing lines without

the usual wave soldering process.

Thus, this capability can result in

significant reductions in PCB assembly

costs. Avago designed the reflow

MOST25 FOTs to be more robust than

standard parts by using a special mold

compound and by optimizing the

geometry of the devices. The new

components use the same robust ICs,

LEDs and photodiodes as Avago's

into the firmware, for example ring

break diagnosis (RBD), several trigger

inputs and outputs and the functionality

for creating a parallel CAN/LIN network

are also fully implemented. One

module is able to be a master, a slave

or a spy. By using several modules in a

PXI system, the results are various

unique and simultaneous MOST

networks. The modular hardware

architecture enforces efficient software

design for organising all application

tasks. The controllers’ parameterisation

is via GOEPEL electronics’ Windows

standard API; users may install and

execute (supported by an on-board

API) self-generated program codes on

the module for the first time. Also,

GOEPEL electronics’ test sequencer

well-proven, non-reflow MOST25

FOTs. The devices operate at supply

voltages of 3.3V and 5V. Having

successfully completed extensive

qualification tests, the reflow MOST25

FOTs have received the final

recommendation for release from

includes various communications and

verifying routines, and automated

quality inspections can be defined.

www .goepel .com

RELNETyX, as well as from the MOST

Compliance Listing. Production

quantities of the components with part

numbers AFBR-1013 and AFBR-2013

are available now.

www .avagotech .com

New Communication Controller for MOST150

First Reflow MOST25 FOTs Released


http://www.goepel.com

http://www.avagotech.com


MOST News

Melexis has developed a new fiber

optical transceiver (FOT) for MOST25

in a surface mount device (SMD)

package, named MLX75608.

MLX75608 has received MOST25 full

compliance. The Melexis FOTs were

evaluated positively by one OEM and

two tier1 suppliers. Compared to its

through-hole mount (THM)

counterparts, this novel device will

drastically reduce cost of ownership

as it can be used in today’s automated

pick and place equipment and lead-

free reflow soldering processes. In

addition, MOST25 in the SMD

package should significantly improve

electro-magnetic interference (EMI)

performance. The new Melexis

MOST25 FOT MLX75608 has a SOIC

24-pin footprint, and is identical to the

Melexis MOST150 FOT in SMD.

Standardization of the SMD package

for MOST25 is underway in the MOST

physical layer working group.

MLX75608 includes several salient

new features, such as a two step

wake-up process, and a status pin for

the receiver. This pin is only put on

“low” when the following two

conditions are met at the same time:

the modulated light is received and

the received data rate is within the

operation frequency range. Melexis

expects to achieve full qualification

around the end of this year.

www .melexis .com

Serial production of the first car

including MOST150 is coming closer

and Hamamatsu Photonics has

delivered MOST150 fiber optical

transceivers for the D-sample phase

to its customers already. In this pre-

series production the semiconductor

and assembly processes were further

improved, testing and packaging

issues were discussed and fixed, and

other APQP tasks were finished, such

as ppm target verification and process

and machine capability evaluation.

The fully automated serial assembly

lines for the MOST150 transceivers

are installed into a newly bought

production building and the

production staff is educated. While

everything is being prepared for start

of production, some remaining

technical challenges are solved step

by step. New developments and

technologies always contain the risk

of finding technical phenomena which

were not known yet, but with its long

experience with and deep knowledge

of the semiconductor and assembly

processes, Hamamatsu Photonics

has approached, analyzed and solved

such issues continuously in

cooperation with its customers. Both

FOT packages that are described in

the MOST specification will go into

serial production: the SMD package

and the THM package. Both versions

provide easy automated handling and

support reflow soldering processes.

www .hamamatsu .de

Compliance for New MOST25 FOT in SMD Package

Preparation for Serial Production of MOST150 FOTs



MOST News

Besides the interface for MOST50,

the now shippable blue PiraT

50M5C1SW2L offers the ability to

record the Electronic Control Line

(ECL). This speeds up the detection of

ring-breaks, allows improved

diagnostics and therefore saves time

during the development phase. As a

second point, the Telemotive MOST50

data logger has an interface for single-

wire CAN; this makes the MOST50

data logger very interesting for

carmakers that are using vehicle bus

systems on a single-wire base.

Furthermore, 5 CAN, 4 serial ports, 2

LIN and 1 Ethernet interface(s) can also

be logged. The included client software

enables easy operation and

conversion/export into various data

formats. The blue PiraT is also available

with MOST25 and MOST150 interfaces

and therefore offers solutions for all

MOST standards. In addition, there are

variants of the blue PiraT available with

up to 10 CAN, 4 LIN, 2 FlexRay, 4 serial

and 4 Ethernet interfaces. All models

of blue PiraT have the automotive

qualification, paired with the well-

established power management, ease-

of-use operation, compact product

size, and license extension among

others.

For supporting customers as well as

partners and for training purposes,

Telemotive provides a technical

MOST150 poster.

www .telemotive .de

New MOST50 Data Logger

The new version 7.6 of CANoe.MOST

offers developers and system

integrators significantly improved filter

options in projects with MOST150. Use

of the VN2640, the new Vector Interface

for MOST150, enables precise time

stamps as well as direct access to the

Electrical Control Line (ECL). CANoe.

MOST 7.6 – the simulation and test tool

from Vector – offers MOST users

significant efficiency gains in their

everyday work. The new version’s

revised Trace Window has a nearly

unlimited event buffer. Users can now

set up filters directly in the Trace

Window by drag & drop; these filters

quickly reduce the flood of data in the

display, limiting it to just specific

messages of interest. In addition, the

VN2640 – the new MOST150 interface

from Vector – provides ideal bus

access. Precise time stamps for all

events and low latency times enable

accurate time representation of events

on all channels. In gateway applica-

tions, e.g. with CAN, the time stamps

of CAN and MOST messages are

synchronized, permitting exact

measurement of routing

times. It is also possible to

access the Electrical Control

Line (ECL) using CANoe.

MOST and the VN2640.

Synchronous display of the

ECL signal, together with

other MOST messages,

provides valuable information

for detailed analyses. Free

programmability of ECL access lets

users stimulate ECUs and evaluate ECU

responses, eliminating the need for

costly additional hardware solutions.

www .vector .com/most/

MOST150 Interface Offers Direct ECL Access

tions, e.g. with CAN, the time stamps

of CAN and MOST messages are

synchronized, permitting exact



MOST News

Outsourcing test and system integration

tasks is a well-established solution in the

IT industry. Ruetz System Solutions now

provides the complete testing of car

infotainment devices and systems to the

automotive industry.

This service is performed

by the in-house test lab-

oratory of the engineer-

ing service provider.

Control devices and

systems are tested in

the areas of physical

layer, network, system

behavior and applica-

tion. The tests are based

on MOST Cooperation

specifications and the

specific requirements of

carmakers. A completely

equipped test laboratory and the Ruetz

System Solutions test solutions, with all

the possibilities for automation, are

available for the testing of all MOST

speed grades. The ensuing cost savings

MOST Test Laboratory as a Service

are not merely a result of outsourced

test costs. They are rather due to the

benefits produced in the shortest possi-

ble period of time by Ruetz System

Solutions' extensive customer experi-

ence, and test processes and methods

which have been improved and stand-

ardized over many years. By contracting

Ruetz System Solutions, an experienced

test partner with proven specialist

knowledge and well-structured proc-

esses, leading project managers in the

car industry or supply industry will have

all the benefits of the clear view of an

independent test house, and this will

enable an objective assessment of the

maturity of a particular development.

www .ruetz-system-solutions .com

SMSC´s MOST Evaluation Boards

represent complete MOST devices

utilizing the INIC (Intelligent Network

Interface Controller) from SMSC for

the respective MOST speed grades.

The OS81110 Evaluation Board now

completes the MOST Evaluation

Board family, supporting the new

MOST150 Technology. It offers the

ideal solution for simulating MOST150

devices such as amplifiers, audio sinks

etc., since the standard code load on

the board incorporates FBlock Amp,

FBlock Auxin and FBlock enhanced

testability. Thus it can be used for test-

ing and verification as well as for appli-

cation development. The developer

can program customized applications,

or might modify the existing applica-

tion running on the EHC in order to

develop new functions and features.

The OS81110 Evaluation Board is

available in two versions, with and

New Evaluation Board Simulates MOST150 Devices

without DTCP cipher engine. On the

evaluation boards, the INICs talk to a

commercial microcontroller (EHC)

holding the application code load,

accomplishing certain application

capabilities. Further features are

MOST compliant power management

and audio exchange capabilities with

the MOST network. Through the vari-

ous interfaces of the IO Companion

(I2C, I2S, TSI, SPI, HBI), the boards

offer connectivity to all the following

hardware ports: USB, Ethernet, stereo

audio, expanded audio up to 8 stereo

channels, supporting 7.1 surround

sound, and TSI Interface for video

support.

www .smsc-ais .com


http://www.ruetz-system-solutions.com

http://www.smsc-ais.com


MOST Cooperation

Intrepid Control Systems (ICS)

is a privately held company located in

Detroit, Michigan (United States). ICS

focuses on providing high technology

computer software and hardware

services and products and has been a

provider of innovative vehicle network

and embedded tools for over 15

years.

www .intrepidcs .com

Magneti Marelli

has been operating in the field of

telematics and satellite navigation

since the early 1990s. The enterprise

offers a complete and scalable range

of telematic products. Magneti Marelli

Electronic Systems supplies telematic

components to the Fiat Group (Fiat,

Alfa Romeo, Lancia, Maserati), to the

PSA group (Peugeot and Citroen) and

to the Chinese car manufacturers

SAIC and DPCA.

www .magnetimarelli .com

Tektronix

For more than sixty years, engineers

have turned to Tektronix for test,

measurement and monitoring solu-

tions to solve design challenges,

improve productivity and dramatically

reduce time to market. Tektronix is a

supplier of test instrumentation for

engineers focused on electronic

design, manufacturing, and advanced

technology development.

www .tektronix .com

Ubiquitous Corporation

derived the company name from the

concepts of “ubiquitous computing”

and a “ubiquitous network". Opti-

mized for embedded systems, Ubiq-

uitous products provide compact,

light, and high-speed network solu-

tions. Their target is to combine soft-

ware with appropriate hardware and

propose well-honed system solutions

that maximize the performance of

semiconductors.

www .ubiquitous .co .jp

The MOST Cooperation Welcomes New Members

Partners

Associated Partners: Carmakers

Associated Partners: Suppliers

Visteon, X2E, Xilinx, Yazaki.

Ubiquitous, Vector,

TTTech Automotive,

TOYODA GOSEI,

Telemotive,

Tektronix,

TE Connectivity,

Tata Consultancy

Services,

STMicroelectronics,

Softing,

RUETZ SYSTEM

SOLUTIONS,

Renesas Electronics,

RELNETyX,

paragon, Pioneer,

Panasonic

Automotive Systems,

Nippon Seiki, Ontorix,

NAV-TV,

Alpine, ALPS Electric,

Analog Devices, ASK Industries,

Avago Technologies, AWTCE, Bang & Olufsen, Bosch, Bose, Clarion,

Continental Automotive Systems,

D&M PSS,

Delphi,

Dension Audio,

DENSO,

Elektrobit Automotive,

FiberDyne Systems,

Fujitsu TEN,

Furukawa,

GÖPEL electronic,

Hamamatsu,

Hirschmann Car

Communication,

Hosiden,

HYUNDAI MOBIS,

Intrepid Control

Systems, Iriso,

Johnson Controls,

K2L, KETI, Lear,

LeCroy, LG Electronics,

Magneti Marelli, Melexis, Mitsubishi Electric,

Mitsubishi Rayon, Molex,

Movimento,


http://www.intrepidcs.com

http://www.magnetimarelli.com

http://www.tektronix.com

http://www.ubiquitous.co.jp


MOST Cooperation

MOST InsideNew Car Models Running with MOST Infotainment Networks

The MOST Cooperation (MOSTCO) is the organization through which MOST Technology is standardized and refined

so that it continues to stay abreast of the latest industry requirements. Today it consists of 16 international carmakers

and more than 60 key component suppliers. They have joined together to work with MOST Technology and to

contribute to its innovation. The MOST Cooperation is prepared to embrace efforts to further develop and standardize

the technology for other industries and to establish the corresponding work structures. The MOST Cooperation was

founded in 1998 to standardize MOST Technology as a global standard for multimedia networking. Audi, BMW,

Daimler, HARMAN and SMSC as core partners form its Steering Committee.

About MOST Cooperation

Mercedes-Benz B-Class

Mercedes-Benz C-Class Mercedes-Benz M-Class MINI Coupé

BMW 1 seriesAudi Q3



Upcoming EventsInternational VDI Congress

"Electronic Systems for Vehicles"

in Baden-Baden, Germany

on October 12-13, 2011

Stephan Esch, AUDI AG, and Stefan

Wachter, Daimler AG, will present

"MOST150 – Technology Validation

and Series-Production Readiness". At

stand 75, MOST Cooperation will

exhibit the seamless integration capa-

bilities of Ethernet based devices with

MOST.

12th MOST Interconnectivity

Conference Asia in Tokyo, Japan,

on November 17, 2011

At the Laforet Hotel in Tokyo, repre-

sentatives of the MOST Cooperation

will present an update on recent

achievements of the organization and

the MOST standardization roadmap

to numerous attendees of Asian car-

makers and their suppliers. The Con-

ference is open to the public.

14th All Members Meeting

in Stuttgart, Germany,

on March 20, 2012

The members of the MOST Coopera-

tion will meet for their annual All Mem-

bers Meeting to review the latest

achievements and outline the road-

map for 2012.

MOST Forum 2012

in Stuttgart, Germany,

on March 20, 2012

The 4th MOST Forum invites automo-

tive professionals to the international

conference and exhibition on MOST

Technology. Participating again as a

knowledge partner, the MOST Coop-

eration is looking forward to a very

interesting, high-quality conference

program with a keynote speech by a

carmaker. Member companies are

welcome to present their MOST high-

lights in the exhibition area.

The MOST Cooperation is not responsible for the members’ contributions in this newsletter and distances itself expressly from the contents of all third parties’ websites. Neither the MOST Cooperation nor any of its members shall be held responsible or liable for any of the contents in the links to non-MOST Cooperation web pages.

PublisherMOST Cooperation Bannwaldallee 48 76185 Karlsruhe Germany Phone +49 721 966 50 00 [email protected] http://www.mostcooperation.com

Conception and Editorial Office ahlendorf hueggenberg gbr Maximilianstraße 8 82319 Starnberg Germany Mandy Ahlendorf Phone +49 8151 555009 11 [email protected]

Design and Layout Saleaway Marketing & Design GmbHBürgerstraße 64020 LinzAustria

Phone +43 732 [email protected]://www.saleaway.at

MOST Outlook


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2011 MOST-Informative Screen

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