SMSC MOST50 User Manual

Download

User’s Manual

MOST50 E-O Converter

Jan 2009 Page 1

MOST50 E-O Converter

Further Information

For more information on SMSC automotive products, including in tegrated circuits, software, and MOST development tools and modules, visit our web site: http://www.smsc-ais.com available at: http://www.smsc-ais.com/offices

. Direct contact information is

SMSC Europe GmbH

Bannwaldallee 48 D-76185 Karlsruhe Germany

SMSC

80 Arkay Drive Hauppauge, New York 11788 USA

Technical Support

Contact information for technical support is available at: http://www.smsc-ais.com/contact.

Legend

ant to which i t i s pr ovided, and is no t repr oduced or disc losed to o ther s with out t he pr ior wr itten c ons ent o f S MSC. T he c onfidenti al 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 los es its val idity wi th th e next edi ti on. A lthough the inf orm ation is be lieved to be accurate, no r espons ibili ty is assume d for inacc urac ies. Specifications and other documents mentioned in this document are subject to change without notice. SMSC reserves the right to ma ke changes to this document and to the pro ducts at any time w ithout notice. Ne ither the provi sion of this informati on nor the sal e of the described produ cts 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 def ects or err ors kn own as anomal ie s, incl uding but not neces sarily limit ed to any which may be identif ied 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 tradema rk, and SMSC an d MOST are r egistered trade marks of Standard Microsys tems Corporati on (“SMSC ”). Other name s 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 NO T ANY REMEDY OF BUY ER IS HELD TO H AVE FAILED OF ITS ESSENTIAL PURPOSE, AND WHETHER OR NOT SMSC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

MOST50 E-O Converter

Conventions

Within this manual, the following abbreviations and symbols are used to improve readability.

Example Description

BIT

FIELD.BIT

x…y Range from x to y, inclusive

BITS[m:n]

PIN Pin Name

msb, lsb Most significant bit, least signifi cant bit

MSB, LSB Most significant byte, least signi fi cant byte

zzzzb Binary number (val ue zzzz) 0xzzz Hexadecimal num ber (value zzz)

zzh Hexadecimal number (value zz)

rsvd Reserved memory location. Must write 0, read value indeterminat e

code Instruction code, or API function or parameter

Multi Word Name

Section Name Section or Document name.

VAL

x Don’t care

<Parameter> <> indicate a Parameter is optional or is only used under some conditions

{,Parameter} Braces indicate Parameter(s) that repeat one or more times.

[Parameter]

Name of a single bit within a field Name of a single bit (BIT) in FIEL D

Groups of bits from m to n, inclusive

Used for multiple words that are considered a single unit, such as:

Resource Allocate

Over-bar indicates active low pin or register bit

Brackets ind icate a nested Parameter. This Parameter is not real and actually decodes into one or more real parameters.

message, or

Connection Label

, or

Decrement Stack Pointer

instruction.

Page 3

MOST50 E-O Converter

TABLE OF CONTENTS

1 PREFACE .................................................................................................................... 5

1.1 Intended Use ................................................................................... ....... ....... ....... ............................5

1.2 Deliverab les ............ ......... .......... ................... ......... ................... ......... ................... ............................5

2 INTRODUCTION ......................................................................................................... 6

3 SYSTEM EXAMPLE .................................................................................................... 8

4 BOARD DETAILS ..................................................................................................... 10

4.1 Batter y Oper a tion ...................... ......... .......... ................... ......... ................... ......... ..........................11

4.2 Physical Layer Conversion .............................................................................................................12

4.3 Status LEDs ........................... ................... .......... ................... ......... ................... ............................13

4.3.1 Power .....................................................................................................................................13

4.3.2 Charge ................................................................................................................................... 13

4.3.3 Optical Error ...........................................................................................................................13

4.3.4 ePHY Error .............................................................................................................................13

5 TEST CONFIGURATIONS ........................................................................................ 14

5.1 Radiated Emi ssions ............................ ................... .......... .................. .......... ................... ................14

5.2 Bulk Current In jection ........... ................... ......... ................... .......... ................... ......... .....................16

5.3 Transverse Electromagnetic Cell ............................................... ....... .......... ....... ....... ....... ..............18

5.4 Electrostatic Discharge ....................... .......... ................... ......... ................... ................... ................ 21

APPENDIX A: SPECIFICATIONS ................................................................................ 22

APPENDIX B: TROUBLESHOOTING ......................................................................... 23

APPENDIX C: INITIAL CHARGE INSTRUCTIONS ..................................................... 24

MOST50 E-O Converter

1 Preface

1.1 Intended Use

SMSC’s MOST50 E-O Converter is intended for use during development, test, and analysis of MOST50 Electrical Physical Layer (ePHY) network devices. Operation of the MOST50 E-O Converter is supported only when used in conjunction with the components provide by SMSC, which are included in the product deliverables (see Section 1.2). The original state of the produ ct should not be altered; otherwise produc t functionality and performance cannot be guaranteed, and user safety may be at risk.

This user’s manual shou ld be read in its entirety prior to operating the M OST50 E -O Converter, with special consideration given to Initial Charge Instructions (Appendi x C). Any reference to E -O Convert er in this document implies MOST50 E-O Converter.

1.2 Deliverables

The MOST50 E-O Converter is designed for use with the components that accom pany the device in the MOST50 E-O Converter Kit. A complete MOST50 E-O Converter Kit includes the following items:



MOST50 E-O Converter (qty: 2)



12 V Power Supply (qty: 2)



Unshielded Twisted Pair (UTP) ePHY Cable - 0.5 m (qty: 2)



Duplex Optical Fiber Cable - 3 m (qty: 1)



Duplex Optical Fiber Cable - 40 m (qty: 1)



ePHY Connector Housing (qty: 2)



Female Contacts (qty: 8)



MOST50 E-O Converter User’s Manual (qty: 1)

Page 5

MOST50 E-O Converter

2 Introduction

In order to validate electomagnetic compatibility (EMC) and operational electrostatic discharge (ESD) tests, it is necessary to isolate the device under test (DUT) from other nodes w ithin the MOST50 ePHY network (see Figure 2-1). Isolation involves eliminating the influence of the other nodes as well as external environmental factors from the DUT. In the case of EMC testing, environmental isolation is achieved through the use of a n anech oic chamber, which is a s hielded room that is des igned to a ttenuate env ironmental noise sources. For operational ESD testing, the transient voltages induced on the ePHY network need to be confined to the DUT. This is accomplished by electrically isolating the DUT ePHY network from the other MOST50 devices.

MOST50

Network

Device

MOST50

ePHY

Network

MOST50

Network

Device

(DUT)

EMC/ESD measurements fo the DUT must be performe while the device is operatin in an active sys tem. Electrica isolation is required t minimize the influence of othe network devices and variou environmental factors.

MOST50

Network

Device

Figure 2-1: MOST50 Network Implementation

The MOST50 E-O Converter assists in isolating the DUT durin g a fun ctional network test by converting a MOST50 ePHY network into an optical physical layer network interface. Figure 2-2 shows how this is achieved by using two E-O Converter devices. One E-O Converter is connected electrically to the MOST50 network devices outside of the test environment while the other E-O Converter is connected electrically to the MOST50 DUT inside of the test environment. The MOST50 net work is completed wh en an optical connection is made between the two E-O Converters.

MOST50

Network

Device

MOST50 E-O Converter

Isolated EMC/ESD

Test Environment

MOST50

ePHY

Network

MOST50

Network

Device

Figure 2-2: MOST50 Network Impl eme ntation with DUT Isolation

MOST50

E-O

Converter

(#1)

Optical Physical

Laye r Netwo rk

MOST50

E-O

Converter

(#2)

MOST50

ePHY

Network

The major features of the MOST50 E-O Converter include:



Conversion between MOST50 ePHY network signals and optical physical layer network signals



Minimal influence on MOST50 ePHY network messages



Protection of stimulus equipment from harsh test environments



Optical interface operable at lengths up to 50 m



Aluminum enclosure with battery power supply to reduce emissions and improve immunity



On-board battery charger circuit



Simultaneous battery charging and powering the device



Low battery indicator



Remote monitoring of ePHY errors through a Versatile Link optical transmitter

MOST50

Network

Device

(DUT)

The MOST50 E-O Converter has been tested under the following conditions:



CISPR 25:2002 – Radiated and Conducted Emissions: Class 5, narrowband



ISO 11452-3:2001(E) – 225 V/m, 1 - 400 MHz



ISO 11452-4:2001 – 200 mA, no network unlocks or coding errors – 300 mA, no physical damage



ISO 10605:2001 – Handling: ±8 kV contact discharge – Operational: ±15 kV air discharge

Page 7

MOST50 E-O Converter

3 System Example

Instructions on setting up a sample test system are pro vided in this section. The test system, shown in Figure 3-1, utilizes two MOST50 E-O Converters to electrically isolate an OS81082 Evaluation Board, which is the DUT in this sample system. The test environment in this example is represented by the anechoic chamber. The OptoLyzer G2 3050e serves as the MOST50 netwo rk master and is used to monitor and inject network traffic through either OptoLyzer transceiver or MOST RapidControl.

Anechoic Chamber

UTP cable

(1.0 m) (1.0 m)

Optolyzer

3050e

(Master)

Devices used in the test system example (Figure 3-1) are connected using the following steps. Cable connections between devices are shown in Figure 3-2.

1. Connect the OS81082 Evaluation Board (DUT) to the E-O Converter (#2) with two UTP ePHY cables.

2. Connect the duplex optical fiber cable to each of the E-O Converters, ensuring that the SC connectors are inserted correctly.

3. Connect the OptoLyzer G2 3050e (Master) to the E-O Converter (#1) using two more UTP ePHY cables.

4. Turn on all of the devices. The ePHY and optical error LEDs on the E-O Converters will turn off once the network is locked.

5. The system is now ready for testing.

MOST50

ePHY

Network

UTP cable

(1.0 m)

Duplex optical

fiber cable

(40 m)

MOST50

E-O

Converter

(#1)

Figure 3-1: MOST50 Test System Example

Optical Physical

Layer N etwork

MOST50

E-O

Converter

(#2)

UTP cable

MOST50

ePHY

Network

UTP cable

(1.0 m)

OS81082

Evaluation

Board (DUT)

In this example, the Optolyzer G2 3050e is able to exercise the DUT without adding any noise interference. The test can also include any number of MOST50 network devices within the anechoic chamber.

MOST50 E-O Converter

Stimulus Equipment

Can be powered

by DC supply.

Front Panel Back Panel

MOST50

ePHY

MOST50 E-O Converter

Front Panel Back Panel

MOST50

ePHY

MOST50 E-O Converter

OptoLyzer

12 - 16 V

2.5 A

OFF

E-O Conv erter

Chamber Wall

12 - 16 V

2.5 A

OFF

Battery

Powered

Trigger

OL3050e

R M L

MOST50

ePHY

Error

Line

IN OUT

Optical

Power

ePHY

Error

Optical

E-O Conv erter

OS81082 Evaluation Board

Reset

INIC

Debug Port

MOST50

ePhy

Power

9 - 16 V

OFF

DUT

Anechoic Chamber

Figure 3-2: Connection Diagr am

Page 9

MOST50 E-O Converter

4 Board Details

An overview of the MOST50 E-O Converter PCB is shown in Figure 4-1. The E-O Converter provides a single power jack for supplying power (12 V, 2.5 A typical) to the entire E-O Converter. This jack supports a power plug such as Binder 99-3400-100-03 (or equivalent). Alternatively, the E-O Converter power can be supplied by an internal battery . Power from the battery or external power supply, can be completely dis-

connected from the functional circuitry by the power switch. The power switch must be in the order for the E-O Converter to function.

Power

Charge

Optical Error

ePHY Error

ePHY

Error

Versatile Link

Transmitter

Board Power Supply

OS81082

Charger Circuit

Battery

Connector

position in

Up - On

Power

Switch

Down - Off

Power

Jack

Optical Connector

ePHY Front End

OS81082

Figure 4-1: E-O Converter PCB Block Diagram

ePHY

Connector

MOST50 E-O Converter

4.1 Battery Operation

An on-board charger c ircuit is provided, which al lows the battery to charge when a DC power supply is present at the power jack. The charger circuit autom atically turns on when a DC power supply is insert ed into the power jack, independent of the po wer switch. When the fast -charge conditions are m et, the char-

Charge

ger circuit begins to fast-charge the battery. Fast-charge is active when the battery reaches a temperature greater than 50 °C the charger circuit exits the fast-charge cycle. The fastcharge cycle typically lasts three to four hours when the battery is completely discharged. The end of the

Charge

fast-charge cycle is indicated by the

LED turning o ff. Anytime t hat the power supply is connected to the E-O Converter, the charger circuit trickle-charges the battery. Tricklecharge mode helps to maintain a full charge on the battery without over-charging it.

Inserting a DC power supply into an E-O Converter with a full charge on its battery results in a short fa stcharge cycle. A temperature monitor ensures that the charge r circuit does not enter fast-charge un til the

Charge

battery temperature is less t han 40 °C. The

Charge

fast-charge mode. The

LED stops flashing once the battery temperature falls below 40 °C.

LED will flash to indicate that the battery cannot enter

If the battery is severely depleted of charge and the DC power supply is plugged into the E-O Converter, a pre-charge will occur to condition the b attery f or a fas t-charge cycle. This pre-charge condition is also sig-

Charge

nified by the

LED flashing. Once the battery reaches a minimum voltage, the charger will commence

with the fast-charge cycle.

The E-O Converter uses a nickel-metal hydride rechargeable bat tery, therefore it is not necessary to fully discharge the battery before it can be recharged.

LED (blue) is on. If the

Charge

LED is off and the DC

When the power switch is in the

position and the DC power supply is connected to the power jack, the DC power supply powers the board supplies (3.3 V and 2.5 V) for the functional circuitry (data conversion). Operation of the E -O Converter while the battery is charging can be a useful feature during compliance testing. The E-O Converter ensures that its battery maintains a full charge. When the battery of the E-O Con verter environment is low, indicated by the

outside of the test environment can be powered by a DC power supply, which

inside of the test

Power

LED (yellow) on, the inside and outside E-O Converters can be switched to allow the empty battery to charge while testing continues. Switching the E-O Converters in this manner results in minimal down time, and can easily be done between tests.

Once the DC power supply is disconnected, the charger circuit shuts down. If the power switch is

when this occurs, the board power supplies will continue to be powered by the battery. A full battery charge typically provides 10 hours of power for MOST50 E-O Converter operation. After approximately eight hou rs,

Power

the low battery indicator

LED (yellow) turns on. This ind icates that there are less than two hours of

battery life remaining and that the battery should be recharged.

To conserve battery charge, the power switch should be turned

OFF

whenever tests are not

being conducted.

Page 11

MOST50 E-O Converter

4.2 Physical Layer Conversion

The primary function of the MOST50 E-O Converter is network signal conversion between electrical and optical physical layers. The E-O Converter incorporates two OS81082 (INICs) to achieve this conversion. The network frame rate of both ePHY and optical physical layer networks is 48 kHz. One INIC receives the incom ing ePHY network signal and retransmits it as the outgoi ng optical physical layer network s ignal; the other INIC receives the incoming optical physical layer network signal and retransmits it as the outgoing ePHY network signal. This ePHY to optical physical layer conversion is accomplished by re-clocking the MOST50 network signal while maintaining data integrity.

Intelligent Network Interface Contr oll ers

The optical physical layer signal is a pseudo M OST50 interface tha t is based on

Logic

(PECL). Since the optical physical layer network produces no emissions and is isolated electrically, it can be routed t hrough the EMC chamber wall and connec ted to another E -O Converter, where it is converted back to an ePHY network signal. The optical physical layer interface consists of a 1300 nm wavelength optical physical layer transceiver with a SC duplex receptacle. This allows the signal to be transmitted over multi-mode, 62.5/125 MOST50 E-O Converters can be integrated into larger chambers without adding any significant de lay to the network.

The incoming ePHY and optical physical layer n etwo rk signals are c heck ed for coding errors and net work unlocks. Any time an ePHY network error occurs, the physical layer network error occurs, the

ePHY Error

LED ( pulse length greater than 150 ms. ePHY network errors are also conveyed f rom the transmitter (see Figure 4-2). A can be used to capture eP HY network errors that oc cur during testing. This is especially useful for automated and 5.3. The pulse lengths of the ePHY network errors transmitted from the are the same as ePHY network errors on the

Bulk Current Injection (BCI) and Transverse Electromagnetic (TEM) cell testing, outlined in Sections 5.2

Optical Error

) pulse length greater than 50 ms, while a network unlock event produces a

Versatile Li nk optical rece iver, along with a plastic optical fiber (POF) cable

μm glass optical fiber cable for distances up to 50 m. The

Optical Error

ePHY Error

LED (red) is pulsed on. A coding error is indicated by an

ePHY Error

LED.

ePHY

Error

LED (red) is pulsed on. Any time an optical

Versatile Li nk optical transmitter

Optical

Versatile Link transmitter

Positive Emitter Coupled

Versatile Link optical

Figure 4-2: Versatile Link Transmitter (ePHY Error)

4.3 Status LEDs

MOST50 E-O Converter

The E-O Converter provides four status LEDs:

ePHY Error

Versatile Li nk transmitter are shown in Figure 4-3.

Versatile Link transmitter provides status similar to the

Power, Charge, Optical Error

ePHY Error

, and

ePHY Error

LED. The status LEDs and

. In addition, the

ePHY

Figure 4-3: LED Layout

Error

4.3.1 Power

The

Power

LED provides four states that convey the following status information:



Off - The E-O Converter is not powered (power switch is



Green - The E-O Converter is powered via the battery or the power jack (power switch is



Yellow - The battery has less than two hours of charge remaining. Use the DC power supply to charge

the battery.



Flashing Green/Yellow - The battery is disconnected or defective (DC power supply is present).

OFF

or battery charge is depleted).

4.3.2 Charge

The

Charge

LED is relevant only when the DC power s upply is connected to t he power jack. The three states

Charge

of the



Off - The battery is in trickle-charge mode. This indicates that the fast charge cycle has com pleted and



Blue - The charger circuit is in fast-charge mode.



Flashing Blue - The battery cannot enter fast-charge mode becaus e the temperat ure is too high or the

LED include:

the battery is fully charged.

battery is severely discharged. In this mode, the battery is being trickle charged.

4.3.3 Optical Error

The

Optical Error

for the

Optical Error



Off - There are no coding errors or network unlocks from the incoming optical network.



Red - A coding error or network unlock event occurred on the incoming optical network. The pulse

width of the on cycle is greater than 50 ms fo r coding errors and greater than 150 ms for network

unlock events. The

LED is onl y valid whi le the E- O Converter is powered (

LED include:

Optical Error

LED is constantly on while the error condition persists.

Power

LED is green). T he two states

4.3.4 ePHY Error

The

ePHY Error

LED is green). The two states for the



Off - There are no coding errors or network unlocks from the incoming ePHY network.



Red - A coding error or network unlock event occurred on the incoming ePHY network. The pulse width

of the on cycle is greater than 50 ms for coding errors and greater than 150 ms for network unlock

events. The

persists.

LED and Versatile Link trans mitter are only valid when the E-O Converter is powe red (

ePHY Error

LED and Versatile Link transmitter are constantly on while the error condition

LED and Versatile Link transmitter include:

Power

Page 13

MOST50 E-O Converter

5 Test Configurations

The MOST50 E-O Converter can be used in a variety of tests. This chapter provides four test configuration examples, each using a pair of E-O Converters to electrically isolate the device under test from the other network components. The test configurations provided can be used for:



Radiated Emissions



Bulk Current Injection (BCI)



Transverse Electromagnetic (TEM) Cell



Operational Electrostatic Discharge (ESD)

5.1 Radiated Emissions

Figure 5-1 shows a sample CISPR 25:2002 s tyle test configuration for radiated em issions testing. Two E-O Converters are used in the configuration. One is connected electrically to the DUT inside of the anechoic chamber; t he othe r is co nnected to t he stimul us equ ipment outside o f the ane choic cham ber. A glass optical fiber cable connects the E-O Converters together, isolating any radiated noise from the stimulus equipment. The E-O Converter is grounded to the ground plane to minimize unwanted emissions. Figure 5-1 shows that copper tape was used to ground the E-O Converter to the ground plane inside of the chamber. A picture of the E-O Converter is shown to further clarify how it is connected inside the chamber. Outside the chamber, the stimulus equipment, including all other nodes that are a part of the actual application, are connected to the MOST50 network. An OptoLyzer G2 3050e may also be us ed outside the chamber to monitor all MOST50 traffic.

Master

Figure 5-1: Radiated Emission s Test Setup

MOST50 E-O Converter

Insert Pictur e

Slave

E-O

1. DUT

2. ePHY Cable

9. Stimul us Equipment (Including E-O Converter)

3. MOST50 E-O Converter 10. 12 V Batter y

4. Glass Optical Fiber (SC Duple x) 1 1. Feedthru

5. Ground Plane 12. Antenna

6. Insulating Support 13. LISN

7. DUT Power Cable 14. Test Receiver

8. Copper Tape (to ground plane)

Page 15

MOST50 E-O Converter

5.2 Bulk Current Injection

Figure 5-2 shows a sample ISO 11452-4:2001 tes t configuration for BCI testing. For immunity tests, the E-O Converter inside the anechoic chamber is isolated from the ground plane by floating it on an insulating support. This ensures that RF energy is di ssi pated by the DUT a nd not the E-O Con verter. For automated BCI testing, the E-O Converter’s

Versatile Li nk connectors to a Versatile Link receiver outside of the chamber. Both network coding errors and

unlock events are indicated on the receiver.

Refer to Appendix A for Versatile Link receiver and POF cable specifications.

ePHY Error

Versatile Link transmitter output is connected by a POF cable with

ePHY Error

output and can be monitored and recorded at the Versatile Link

MOST50 E-O Converter

Figure 5-2: BCI Test Setup

Master

Slave

E-O

1. DUT 10. 12 V Batter y

2. ePHY Cable 1 1. Feedthru

3. MOST50 E-O Converter 12. Current Injection Probe

4. Glass Optical Fiber (SC Duple x) 13. Current Monitoring Probe

5. Ground Plane 14. LISN

6. Insulating Support 15.

ePHY Error

Monitoring Receiver

7. DUT Power Cable 16. RF Source

8. Plastic Optical Fiber 17. Test Receiver

9. Stimul us Equipment (Including E-O Converter)

Page 17

MOST50 E-O Converter

5.3 Transverse Electromagnetic Cell

Figure 5-3 shows the top and side views for a sample test configuration of an ISO 11452-3:2001(E) style TEM cell test. T he glass opt ical fiber isol ates and protects the sti mulus equ ipment from the ele ctrical disturbances produced during testing. The E-O Converter inside of the TEM cell is grounded to the metal floor using copper tape. For automated T E M C ell testing, the E-O Co nverter’s output is connected by a POF cable with TEM cell. Both network coding errors and u nlock events are ind icated on the monitored and recorded at the test configuration.

Versatile Link receiver. Figure 5-4 shows a photograph of a typical TEM cell

Versatile Link connectors to a Versatile Link receiver outside of the

ePHY Error

Versatile Link transmitter

ePHY Error

output and can be

Top View

Figure 5-3: TEM Cell Test Setup

MOST50 E-O Converter

Floor

Master

Slave

Master

Slave

E-O

Side View

Floor

Septum

1. DUT

2. ePHY Cable

3. MOST50 E-O Converter 10. 12 V Battery

4. Glass Optical Fiber (SC Duplex) 1 1. Feed t hru

5. Field Probe 12. Plastic Optical Fiber

6. Insulating Support 13.

7. DUT Power Cable 14. RF Source

8. Copper Tape (to TEM Cell Floor) 15. 50

9. Stimulus Equi pm ent (Including E-O Converter)

ePHY Error

Monitoring Receiver

Ω Load

Page 19

MOST50 E-O Converter

Figure 5-4: Typical E-O Converter TEM Cell Setup

MOST50 E-O Converter

Figure 5-5: Operational ESD Test Setup

5.4 Electrostatic Discharge

Figure 5-5 shows a sample test configuration for an ISO 10605:2001 operational ESD test. The glass optical fiber isolates the stimulus equipment from the high-voltage transients that are induced on the DUT . The E-O Converter Grounding only the DUT, wi th copper tape, ensures that the ESD events induced on the ePHY network are dissipated solely through the DUT.

inside the test environment is isolated from the ground plane using an insulating support.

Master

E-O

Slave

103

1. DUT

2. ePHY Cable

9. Stimulus Equi pm ent (Including E-O Converter)

3. MOST50 E-O Converter 10.12 V Battery

4. Glass Optical Fiber (SC Duplex) 11. ESD Simulator

5. Ground Plane 12. ESD Gun

6. Insulating Support 13. Building Ground

7. DUT Power Cable 14. Ground Strap

8. Copper Tape (to Ground Plane)

Page 21

MOST50 E-O Converter

Appendix A: Specifications

Description Min Typ Max Units Conditions

MOST50 E-O Converter:

Input Volt age 12 16 V (DC)

Input Current 2.5 A (DC) Operating Temperature 0 50

Fast Charge Cycle:

Input Current 2.0 A (DC) power switch off Charge Time 150 200 min. Temperature Cut-of f 50

Trickle Charge Cycle:

Input Current 2.0 A (DC) power switch off, during pulse Period 1.17 s Pulse Width 73 ms

Battery Pack (7 Cells, 4/3 A in Series):

Output Voltage 8.4 10.5 V(DC) Capacity 3.7 3.75 Ah Temperature Fuse 60

Optical Transceiver (Duplex, SC Receptacle):

Output Optical Power -14 dBm avg. 62.5/125 μm fiber Data Rate 50 Mb/s Wavelength 1300 nm Transmissi on Length 50 m

ePHY Error (Versatile Link Transmitter):

Pulse Length 50 ms Output Optic a l Power -15 dBm Wavelength 660 nm

Versatil e Link Optical Receiver (Avago HFBR-25X3Z or Equivalent) (Not Included) :

Supply V olt age 3.3 V (DC) Input Optical Power -39 dBm LED on Data Rate DC 1.0 kHz Wavelength 660 nm

Versatil e Link Plastic Optical Fiber Cable (Avago Connectors: HFBR-4531Z or equivalent) (Not Included):

Fiber Diameter 1.0 Fiber Attenuation 0. 2 dB/m Cable Length 50 m

12 V DC Power Supply:

Input Volt age 100 240 V (AC) 50 - 60 Hz Input Current 1.5 A (AC) Output Vol tage 12 V (DC) Output Current 3.75 A (DC)

Table A-1: Specificat ions

°C

=12V(DC)

core and cladding

MOST50 E-O Converter

Appendix B: Troubleshooting

Problem Solution

- Plug in the DC power supply and check if the E-OConverter powers up.

- If it no w works , the

E-O Converter does not power on

Network does not lock

Charge

LED is flashing

Power

LED is flashing green and yel low The battery is malfunctioning or has become disco nnect ed.

ePHY Error

not working

Battery charge doe s not last more than eight hours, or the low bat tery indicator turns on prematurely

Something is rattling inside of the enclosure

Versatile Link transmitter is

(blue) will turn on or flash.

Charge

- If the

- If neither of these works, the power supply might not be operati ng correctly. Check that the green LED is on for the 12 V power supply.

- Check the

- If the hooked up correctly and the conne ction s are sec urely in place.

- If the correctly and the connections are securely in place.

- If neither of these works, make sure that the network has a tim i ng-mas ter.

- The battery is sev erely deplete d of charge and a pre-charg e is need ed. The charger will begin a fast-charge cycle when a minimum voltage is reached.

- The battery has recently been charged and is outside of the temperature range to enter another fast-charge cycle. The unit is ready to be used.

- The

ePHY Error

- If they both turn on, make sure that the plastic fib er optical cable is connected correct ly and that the specifications listed in Append ix A.

- If the on, then the transmitter is malfunct ionin g.

- The battery is faulty and should be replaced.

- The LED lightpipe is loose by design. Check to see that the rattling is not caused by the LED lightpipe by holdin g a finger on the lightpipe and gent l y shaking the enclosur e.

- If it is not the lightpipe, then something else is loose inside the enclosu re and could cause a short to the battery. Do not operate the E-O Converter.

Table 5-1: Troubleshooting

LED does not turn on or flash, the battery is defective.

Optical Error

ePHY Error

Versatile Link transmitter should be lit at the same time as the

LED.

Versatile Link transmitter does not turn on whil e the

Power

LED (green) will turn on. Also, the

and

ePHY Error

LED is on, make sure that the glass optical fiber cabl e is

LED is on, make sure that the ePHY cable is hooked up

LEDs on the E-O Converters.

Versatile Link receiver meet s the

Charge

ePHY Error

LED

LED is

Page 23

MOST50 E-O Converter

Appendix C: Initial Charge Instructions

Before using the MOST50 E-O Converter, a full charge cycle must be completed as follows:

OFF

1. Turn

2. Connect the 12 V power supply to the power jack. The charge cycle is in progress.

3. Wait until the

Once the initial charge is complete the E-O Converter is ready to use.

the power switch.

Charge

LED (blue) will turn on, indicating a fast-

Charge

LED turns off. The initial charge may take three to four hours to complete.

To ensure maximum battery life, do not disconn ect the 12 V power supply until the fastcharge cycle is complete.

NOTES:

MOST50 E-O Converter

Page 25

MOST50 E-O Converter

SMSC MOST50 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1 Preface

1.1 Intended Use

1.2 Deliverables

2 Introduction

3 System Example

4 Board Details

4.1 Battery Operation

4.2 Physical Layer Conversion

4.3 Status LEDs

4.3.1 Power

4.3.2 Charge

4.3.3 Optical Error

4.3.4 ePHY Error

5 Test Configurations

5.1 Radiated Emissions

5.2 Bulk Current Injection

5.3 Transverse Electromagnetic Cell

5.4 Electrostatic Discharge

Appendix A: Specifications

Appendix B: Troubleshooting

Appendix C: Initial Charge Instructions