um mostrepeater v02 00 xx-2

MOST ®

Media Oriented Systems Transport

Multimedia and Control Networking Technology

MOST Repeater

V2.0.1 User Manual

Document Information:

Version: V02_00_01-2 Release Date: 2006-03-16

*X11606* © Copyright 2006 SMSC

User Manual © Copyright 2006 SMSC

MOST Repeater Ring Extender (Mini Hub) and Loss-Free Optical Splitter

Document Version: Error! Reference source not found. Date: Error! Reference source not found.

Legend © Copyright 2001 – 2006 SMSC . or its subsidiaries. All rights reserved. Please make sure that all information within a document marked as ‘Confidential’ or ‘Restricted Access’ is handled solely in accordance with the agreement pursuant to which it is provided, and is not reproduced or disclosed to others without the prior written consent of SMSC. The confidential ranking of a document can be found in the footer of every page. This document supersedes and replaces all information previously supplied. The technical information in this document loses its validity with the next edition. Although the information is believed to be accurate, no responsibility is assumed for inaccuracies. Specifications and other documents mentioned in this document are subject to change without notice. SMSC reserves the right to make changes to this document and to the products at any time without notice. Neither the provision of this information nor the sale of the described products conveys any licenses under any patent rights or other intellectual property rights of SMSC or others. There are a number of patents and patents pending on the MOST technology and other technologies. No rights under these patents are conveyed without any specific agreement between the users and the patent owners. The products may contain design defects or errors known as anomalies, including but not necessarily limited to any which may be identified in this document, which may cause the product to deviate from published descriptions. Anomalies are described in errata sheets available upon request. SMSC products are not designed, intended, authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an officer of SMSC will be fully at your own risk. MediaLB is a trademark, and SMSC and MOST are registered trademarks of Standard Microsystems Corporation (“SMSC”) or its subsidiaries. Other names mentioned may be trademarks of their respective holders.

SMSC disclaims and excludes any and all warranties, including without limitation any and all implied warranties of merchantability, fitness for a particular purpose, title, and against infringement and the like, and any and all warranties arising from any course of dealing or usage of trade. In no event shall SMSC be liable for any direct, incidental, indirect, special, punitive, or consequential damages; or for lost data, profits, savings or revenues of any kind; regardless of the form of action, whether based on contract; tort; negligence of SMSC or others; strict liability; breach of warranty; or otherwise; whether or not any remedy of buyer is held to have failed of its essential purpose, and whether or not SMSC has been advised of the possibility of such damages.

Further Information For more information on SMSC products, including integrated circuits, software, and MOST development tools and modules, contact one of our offices below, or visit our web site: SMSC Europe GmbH Bannwaldallee 48 D-76185 Karlsruhe

GERMANY Phone: +49 721 62537-0 Fax: +49 721 62537-119 Email: [email protected] SMSC NA Automotive LLC 1120 South Capital of Texas Highway Building 2, Suite 100 Austin, Texas 78746

USA Phone: +1 512 306-8450 Fax: +1 512 306-8442 Email: [email protected] SMSC NA Automotive LLC 38600 Van Dyke Avenue, Suite 220 Sterling Heights Michigan 48312-1172

USA Phone: +1 586 795-0545 Fax: +1 586 795-8950 Email: [email protected]

SMSC Japan KK 20th Floor

Osaki New City Building #4 1-6-4 Osaki, Shinagawa-ku Tokyo, 141-0032 JAPAN

Phone: +81 3 5487-0502 Fax: +81 3 5487-0490 Email: [email protected]

SMSC Sweden AB Amerikahuset Barlastgatan 2 S-414 63 Göteborg

SWEDEN Phone: +46 31 70460-30 Fax: +46 31 70460-31 Email: [email protected] Technical Support Europe: [email protected] Japan: [email protected] America: [email protected] http://www.smsc-ais.com


© Copyright 2001 – 2006 SMSC All rights reserved

MOST is a registered trademark

User Manual © Copyright 2001 – 2006 SMSC MOST Repeater V2.0.1 User Manual

Document Version: V02_00_01-2 Release Date: 2006-03-16


Document History Version Date Section Comment on changes 2.0-00 2001.10.09 - First version 2.0-01 2001.11.09 5 Drawing: Mechanical outline: Cable colors added

2 Section “Connecting the MOST Repeater” inserted 3 Section “Application Examples”: Drawings modified 3.4 Section “Application with a MOST Datalogger” added 5 Section “Optical and Electrical Characteristics”:

Receivable optical power range for data recovery changed

V02_00_01-1 2004.02.11

6 Section “ Mechanical Design and Connectors”: Cable lengths and pin list for MOST Datalogger connector added.

1 Link to web page added. 2.3 Status LEDs, description extended.

V2.0.1-2 2005-03-16

7 New section added.




Table Of Contents

1 INTRODUCTION...............................................................................................................................6

2 CONNECTING THE MOST REPEATER..........................................................................................7 2.1 Optical Fiber Connection to the Main Ring....................................................................................7 2.2 Optical Fiber Connection to the Ring Extension............................................................................8 2.3 Status LEDs...................................................................................................................................9 2.4 Electrical Connection.....................................................................................................................9

2.4.1 Version with Open Cable Ends ..............................................................................................9 2.4.2 Version with 12V Automotive Connector................................................................................9 2.4.3 Version for MOST Datalogger ................................................................................................9

3 APPLICATION EXAMPLES .......................................................................................................... 10 3.1 Network Extension...................................................................................................................... 10 3.2 Single Data Recovery and Two Active Splitter Outputs ............................................................. 11 3.3 Device Replacement................................................................................................................... 12 3.4 Application with a MOST Datalogger.......................................................................................... 13 4 BLOCK DIAGRAM ........................................................................................................................ 14

5 OPTICAL AND ELECTRICAL CHARACTERISTICS ................................................................... 15

6 MECHANICAL DESIGN AND CONNECTORS............................................................................. 16 6.1 Connectors for MOST Datalogger Application ........................................................................... 17 7 TROUBLE SHOOTING.................................................................................................................. 18

8 APPENDIX A: LIST OF FIGURES ................................................................................................ 19

9 APPENDIX B: LIST OF TABLES.................................................................................................. 19




1 Introduction For other language versions please visit this web site: http://www.smsc-ais.com/most_repeater_docs

Eine deutsche Version dieser Anleitung finden Sie unter: http://www.smsc-ais.com/most_repeater_docs

When examining MOST Network environments, connecting to the network without changing the network’s structure is an important requirement. The MOST Repeater is a versatile device that helps to cope with many of the tasks that arise during the development cycle of a MOST System. According to the major application field of MOST, the MOST Repeater is compliant to the requirements of an automotive environment, with respect to voltage and temperature ranges. Applications for the MOST Repeater cover tasks from simple data recovery, up to flexibly extending a MOST Network with any MOST Device, plus allowing an OptoLyzer4MOST Interface Box (Monitoring Control Message traffic) to be attached loss-free to an extra output at the same time. The MOST Repeater‘s electronic circuitry provides Data Recovery for the MOST bus signal without changing the number of active nodes in the ring. Its inputs OECs (Optic-Electric Converters) and outputs EOCs (Electric-Optic Converters) are compliant to the MOST Physical Layer specification, including the 3dB attenuation of optical power (for Ring Extension side only). An extra “activity output” helps to trigger e.g. external measurement equipment in case of the occurrence of light at either one of both optical inputs. So tracing system startups is no problem. “Activity output” can be used to power an external device completely, if the current stays below the maximum current as specified in chapter 5 on page 15. The basic applications for the MOST Repeater are:

• Replacement of an existing (defective) device in a MOST ring

• Single and duplex data recovery in a MOST ring for very long transmission lines

• MOST Network Extension (Simple1 -> 2 -HUB function)

• Active Splitter (Always available, due to an additional HP type EOC)

The Active Splitter function provides the capability to connect an OptoLyzer4MOST Interface Box in SPY mode (Control Message monitoring) to the main ring, without the need of any adapters or passive splitters. The power supply follows the automotive requirements (filtering, load dump protection, etcetera). If there is no activity on the bus, the MOST Repeater falls into sleep mode. Therefore, no additional cables are required except UBATT (Battery Power) and GND.



http://www.smsc-ais.com/most_repeater_docs


2 Connecting the MOST Repeater

2.1 Optical Fiber Connection to the Main Ring

Figure 2-1: Connection to the Main Ring




2.2 Optical Fiber Connection to the Ring Extension

Figure 2-2: Connection to the Ring Extension. Left: Network Extension, Right: to MOST Datalogger




2.3 Status LEDs Note: If the MOST Repeater is powered on (plugged in) no LED is illuminated yet.

• Activity

LED lights up, if light is detected at the input of the Main Ring (Rx) or at the input of the Ring Extension (Rx).

• Lock Main LED lights up, if a correct MOST signal is detected at the input of the Main Ring (Rx).

• Lock Extension LED lights up, if a correct MOST signal is detected at the input of the Ring Extension (Rx).

2.4 Electrical Connection

2.4.1 Version with Open Cable Ends

Cable length: 300 mm Connect red cable to +12V Connect black cable to GND/0V Connect blue cable for activity signal

2.4.2 Version with 12V Automotive Connector

Cable length: 1300 mm Plug into cigarette lighter

2.4.3 Version for MOST Datalogger

Cable length: 460 mm Connect to plug “Activity” of the MOST Datalogger




3 Application Examples

3.1 Network Extension

Figure 3-1: Duplex Data Recovery Application

The MOST Repeater can be inserted into an optical wire harness interface (e.g. in the center area of the car) in order to refresh MOST data in both directions. For monitoring, the additional Monitor Output is available for HP connectors.




3.2 Single Data Recovery and Two Active Splitter Outputs

Figure 3-2: Single Data Recovery and Two Active Splitters Application

The single data recovery is useful, if a defective device needs to be removed from the MOST Network. The MOST Repeater fills the gap until a new (or repaired) device becomes available. In addition, two optical outputs are available for monitoring (one is based on a HP EOC).




3.3 Device Replacement

Figure 3-3: MOST Ring Extender/ Mini Hub Application

As long as no valid MOST data is received on the Ring Extension side, the MOST Repeater works in the same way as shown in section 3.2 above. Whenever MOST data is received on the Ring Extension side (LOCK is stable for 200 ms min.), the changeover switch will extend the ring. This means, the device connected to the Ring Extension side will be part of the main ring. In case an unlock situation is detected at the Ring Extension side, the extended ring will be excluded again, while the main ring will continue operation. This feature smoothes insertion of external devices, by filtering most of the unlock pulses. The reason for the unlock at the Ring Extension side does not matter. In case a device in the extended branch of the network generates unlocks, this will also lead to a separation of the two sides.




3.4 Application with a MOST Datalogger The MOST Repeater enables connecting and disconnecting of a MOST Datalogger without disturbing a MOST Network. The MOST Repeater is integrated into the main ring. The connection to the MOST Datalogger is made between the MOST Repeater’s connector “ring extension” and the MOST Datalogger’s “OptoLyzer” connector.

Figure 3-4: The MOST Repeater Connected to a MOST Datalogger

The MOST Repeater has an activity output that provides the ability to activate the MOST Datalogger when an optical signal is received.




4 Block Diagram As shown in Figure 4-1 (below), Ring Extension side and Main Ring side are equal with respect to the extension functionality (Repeater function). Nevertheless, there are two differences: 1. The Monitor Out function (HP EOC based) is available for the Main Ring side only. This Output is

useable for debugging purposes, e.g. for connecting OptoLyzer4MOST Interface Boxes in Spy mode.

2. 3dB attenuation, is applicable for the Ring Extension side only.

*) The Activity output is not available for the 12 V automotive connector version

Figure 4-1: Block Diagram of MOST Repeater




5 Optical and Electrical Characteristics Symbol Condition Min. Typ. Max. Unit Peak Wavelength λ2 630 650 685 nm FWHM Δλ2 - - 30 nm Optical output power (left/right) Popt2 1), 2) -10 -8 -6 dBmOptical output power (HP) Popt2 1), 2) -15 -12.5 -11 dBmOptical output power “Light off” POFF2 2), 3) - - -50 dBmExtinction ratio (left/right) re2 4) 10 - - dB Rise time (20%-80%) (left/right) tr2 - - 5 ns Fall time (80%-20%) (left/right) tf2 - - 5,5 ns Pulse Width Variation (left/right) t2pwv 5) 21 - 23 ns Average Pulse Width Distortion (left/right) t2apwd 5) -0,5 - +0,5 ns Positive Overshot within 2/3UI (left/right) -20 - +25 % Negative Overshot within 2/3UI (left/right) -10 - +20 % High Level Signal Ripple between 2/3UI and 3/4UI (left/right)

-10 - +10 %

Receivable optical power range for data recovery

Popt3 1), 2), 3) -24 - -3.5 dBm

Receivable optical power range for switching to ”Light off state”

POFF3 1),2), 3) -40 - -24 dBm

Input Power UBATT 6) 7 14.5 16.5 V Current Consumption (Active Mode) Iactive UBATT=14.4V - 75 100 mA Current Consumption (Sleep Mode) Isleep UBATT=14.4V - 50 65 µA Output Voltage High (Activity) UAct-H IAct < 1A UBATT-1V - - V Output Voltage Low (Activity) UAct-L IAct < 10mA - - 1 V Output current (Activity) IAcc - - 1.2 A Note:

- All values are guaranteed under automotive worst case temperature conditions: Ta = –40°C ... +85°C)

- All the timing values correspond to a sample rate of 44.1kHz 1) Average values 2) Power within a far field angle of 30° (NA = 0.5) 3) Average value, when MOST network off 4) re2=10*log(b1/b0) average see EN/IEC 61280-2-2 5) Values at 50% of signal amplitude 6) UBATT may be up to 25V for less than 2 minutes

Table 5-1: Electrical / Optical Characteristics




6 Mechanical Design and Connectors U BATT (Red)

GND (Black)

Activity OUT (Blue)

30cm

90mm

50m

m

Thickness: 24mm

Optical Signal from M ain Ring toMonitor - Hardware

HP - Connector

Lock ExtensionActivity

MOST Repeater

®

-3dB Switch

MechanicalDesign_20011109

Figure 6-1: Mechanical Outline

Version with open cable ends. Cable length: 300 mm

Version with 12V automotive connector. Cable length: 1300 mm This version has no activity output.




6.1 Connectors for MOST Datalogger Application Repeater for MOST Datalogger application: Cable length: 460 mm

SubD connector

Pin Function Comment

1 +Vcc +BAT.Out – for MOST Repeater2 GND -BAT.Out – for MOST Repeater34 Activity MOST Repeater activity signal5 +Vcc +12 VDC (nominal +13.8 VDC)6 +Vcc +BAT.Out – for MOST Repeater7 GND -BAT.Out – for MOST Repeater89

5 1

9 6

Table 6-2: SubD connector




7 Trouble Shooting If you should have questions about the operation and correct function please contact us via email: [email protected] or via phone at: +49 721 625 37 220.



mailto:[email protected]


8 Appendix A: List of Figures Figure 2-1: Connection to the Main Ring................................................................................................. 7 Figure 2-2: Connection to the Ring Extension. Left: Network Extension, Right: to MOST Datalogger... 8 Figure 3-1: Duplex Data Recovery Application ..................................................................................... 10 Figure 3-2: Single Data Recovery and Two Active Splitters Application............................................... 11 Figure 3-3: MOST Ring Extender/ Mini Hub Application....................................................................... 12 Figure 4-1: Block Diagram of MOST Repeater ..................................................................................... 14 Figure 6-1: Mechanical Outline ............................................................................................................. 16

9 Appendix B: List of Tables Table 5-1: Electrical / Optical Characteristics........................................................................................ 15



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