Sierra Wireless MC8775 Multi-Mode & Multi-Band Wireless Network MiniCard User Manual FCC submission HW Integration Guide

Sierra Wireless Inc. Multi-Mode & Multi-Band Wireless Network MiniCard FCC submission HW Integration Guide

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MC8775 User Manual HTML Version

User Manual

2130114

Rev 1.3

MC5720, MC5725, MC8755, MC8765,

MC8775 MiniCard

Hardware Integration Guide

Proprietary and Confidential

Preface

Rev 1.3 Jul.06 1

Limitation of

Liability

Theinformationinthismanualissubjecttochangewithout

noticeanddoesnotrepresentacommitmentonthepartof

SierraWireless.SIERRAWIRELESSANDITSAFFILIATES

SPECIFICALLYDISCLAIMLIABILITYFORANYANDALL

DIRECT,INDIRECT,SPECIAL,GENERAL,INCIDENTAL,

CONSEQUENTIAL,PUNITIVEOREXEMPLARYDAMAGES

INCLUDING,BUTNOTLIMITEDTO,LOSSOFPROFITSOR

REVENUEORANTICIPATEDPROFITSORREVENUE

ARISINGOUTOFTHEUSEORINABILITYTOUSEANY

SIERRAWIRELESSPRODUCT,EVENIFSIERRAWIRELESS

AND/ORITSAFFILIATESHASBEENADVISEDOFTHE

POSSIBILITYOFSUCHDAMAGESORTHEYARE

FORESEEABLEORFORCLAIMSBYANYTHIRDPARTY.

Notwithstandingtheforegoing,innoeventshallSierra

Wirelessand/oritsaffiliatesaggregateliabilityarisingunderor

inconnectionwiththeSierraWirelessproduct,regardlessof

thenumberofevents,occurrences,orclaimsgivingriseto

liability,beinexcessofthepricepaidbythepurchaserforthe

SierraWirelessproduct.

Patents Portionsofthisproductmaybecoveredbysomeorallofthe

followingUSpatents:

5,515,013 5,629,960 5,845,216 5,847,553 5,878,234

5,890,057 5,929,815 6,169,884 6,191,741 6,199,168

6,339,405 6,359,591 6,400,336 6,516,204 6,561,851

6,643,501 6,653,979 6,697,030 6,785,830 6,845,249

6,847,830 6,876,697 6,879,585 6,886,049 6,968,171

6,985,757 7,023,878 D442,170 D459,303

andotherpatentspending.

Thisproductincludes

technologylicensedfrom:

LicensedbyQUALCOMMIncorporatedunderoneormoreof

thefollowingUnitedStatespatentsand/ortheircounterparts

inothernations:

4,901,307 5,056,109 5,101,501 5,109,390 5,228,054

5,267,261 5,267,262 5,337,338 5,414,796 5,416,797

5,490,165 5,504,773 5,506,865 5,511,073 5,535,239

5,544,196 5,568,483 5,600,754 5,657,420 5,659,569

5,710,784 5,778,338

ManufacturedorsoldbySierraWirelessoritslicenseesunder

oneormorepatentslicensedfromInterDigitalGroup.

MC5720/5725/8755/8765/8775 Hardware Integration Guide

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Trademarks AirCardand“HeartoftheWirelessMachine”areregistered

trademarksofSierraWireless.

SierraWireless,theSierraWirelesslogo,theredwavedesign,

thered‐tippedantenna,andWatcheraretrademarksofSierra

Wireless.

Windows®isaregisteredtrademarkofMicrosoftCorporation.

Qualcomm®isaregisteredtrademarkofQualcommIncorpo‐

rated.

Othertrademarksarethepropertyoftherespectiveowners.

Contact

Information

Consultourwebsiteforup‐to‐dateproductdescriptions,

documentation,applicationnotes,firmwareupgrades,trouble‐

shootingtips,andpressreleases:

www.sierrawireless.com

Sales Desk: Phone: 1-604-232-1488

Hours: 8:00 AM to 5:00 PM Pacific Time

E-mail: sales@sierrawireless.com

Post: Sierra Wireless

13811 Wireless Way

Richmond, BC

Canada V6V 3A4

Fax: 1-604-231-1109

Web: www.sierrawireless.com

Rev 1.3 Jul.06 3

Table of Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

The Universal Development Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Required connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Guide organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Related documents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Power Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Overview of operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Power signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Electrostatic discharge (ESD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Module power states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Disconnected state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Off state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Normal state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Low power mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Usage models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

RF Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

RF connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Ground connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Shielding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Antenna and cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Interference and sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Power supply noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Interference from other wireless devices . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Device-generated RF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

MC5720/5725/8755/8765/8775 Hardware Integration Guide

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Host/Module Communication Interface . . . . . . . . . . . . . . . . . . . . . 19

LED output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Important notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Safety and hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Important compliance information for North American users . . . . . . . . . . . 22

Acronyms and Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Index 27

Rev 1.3 Jul.06 5

1: Introduction

SierraWireless’MiniCardmodulesformtheradiocomponent

fortheproductsinwhichtheyareembedded.MiniCardsare

availableforuseonCDMAandGSMnetworks,including:

•MC5720andMC5725—operatesonCDMAnetworksusing

theIS‐95AandCDMA1X,and1xEV‐DO(IS‐866)network

standards

•MC8755,MC8765,andMC8775—operatesonGSM

networksusingtheGSM/GPRS/EDGE/UMTS/HSDPA

networkstandards

Purpose of this guide

ThisguideaddressesissuesthataffecttheintegrationofSierra

Wirelessmodulesintohostproducts,andincludesdesign

recommendationsforthehostproducts.

Note: An understanding of network technology and experience in

integrating hardware components into electronic equipment is

assumed.

The Universal Development Kit

SierraWirelessmanufacturesaUniversalDevelopmentKit

(UDK)thatfacilitatesallphasesoftheintegrationprocess.

Thiskitisahardwaredevelopmentplatformthatisdesigned

tosupportmultiplemembersoftheWirelessEmbedded

Moduleproductfamily.Itcontainsthehardwarecomponents

thataretypicallynecessaryforevaluatinganddevelopingwith

themodule,including:

•Developmentboard

•Cables

•Antennas

•Otheraccessories

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Required connectors

Note: Contact vendors before

choosing your connectors — the

numbers included here are for

reference only. Choose

connectors that are appropriate

to your design.

Whenintegratingthesemodulesintoyourhostdevice,you

needthefollowingconnectortypes:

•RFcablethatmateswithHiroseU.FLconnector(model

U.FL#CL331‐0471‐0‐10)

•Industry‐standardmatingconnectorfor52‐pinEDGE:

SomemanufacturersincludeTyco,Foxconn,andMolex.For

example,theconnectorusedontheMC5720/MC5725/

MC8755/MC8765/MC8775UniversalDevelopmentKit

boardisaMolex67910‐0001.

•Industry‐standardUSIM/RUIMconnector:Theactual

connectoryouusedependsonhowyourdeviceexposesthe

USIM/RUIMsocket.Forexample,theUSIM/RUIM

connectorusedontheMC5720/MC5725/MC8755/MC8765/

MC8775UniversalDevelopmentKitisanITTCCM03‐3518.

Guide organization

Thisguideincludesthefollowingsections:

1. Introduction(thissection)

2. Power Interface(p.9)

Describespowercontrolsignalsusedbythemoduleand

discussesdesignissuesrelatedtopowersupply

integration.

3. RF Integration(p.13)

Describesantennaconnectionmethodsandgroundingissues,

RFinterferenceanddesenseissues.

4. Host/Module Communication Interface(p.19)

DescribestheUSBinterfaceforhost/modulecommunication,

andtheUSIM/RUIMinterfaceforhost/moduleintegration.

5. Acronyms and Definitions(p.25)

Listsacronymsanddefinitionsusedthroughoutthisguide.

6. Regulatory Information(p.21)

Describesregulatoryapprovalsandregulatoryinformation

requirements.

Note: The term "host" always refers to the host device.

Related documents

Thisguidedealsspecificallywithhardwareintegrationissues

thatareuniquetotheMC5720/5725andMC8755/8765/8775

modules.

Introduction

Rev 1.3 Jul.06 7

Table1‐1listsotherdocumentsreferencedinthisguide.

Table 1-1: Related documentation

Document title Description

AT Command Set for User

Equipment (UE) (Release 6) This 3GPP technical specification describes standard AT

commands for GSM/UMTS devices.

The document (3GPP TS 27.007) can be downloaded

from www.3gpp.org.

CDMA 1X Standard This standard describes the technical requirements for

CDMA systems, including details on sleep cycle index

(SCI) values.

The document, CDMA 2000 Series Release A (2000)

(document # TIA/EIA/IS-2000 Series, Release A) can be

ordered from www.tiaonline.org.

EM5625/MC5720 CnS

Reference (Document

2130643)

This document describes the CnS (Control and Status)

messages that are available for use with the MC5720 and

the MC5725.

EMXXXX Embedded Modem

Extended AT Command

Reference (Document

2130395)

This document describes proprietary AT commands for the

MC5720. For MC8755/MC8765/MC8775-specific

commands, see MC87xx Modem Extended AT Command

Reference (Document 2130616)

FCC Regulations - Part 15 -

Radio Frequency Devices This section of the FCC Code of Federal Regulations, Title

47 deals with radio frequency devices, including EM

shielding requirements.

The regulation can be downloaded from

http://wireless.fcc.gov.

IEC-61000-4-2 level 3 This document describes techniques for testing and

measuring electrostatic discharge (ESD) immunity.

The document can be ordered from www.iec.ch.

MC5720 MiniCard Product

Specification (Document

2130599)

This document describes the mechanical and electrical

specifications, and standards compliance of the MC5720.

MC5725 MiniCard Product

Specification (Document

2130TBD)

This document describes the mechanical and electrical

specifications, and standards compliance of the MC5725.

MC8755/8765 PCI Express

MiniCard Product

Specification (Document

2130637)

This document describes the mechanical and electrical

specifications, and standards compliance of the MC8755/

MC8765.

MC8775 PCI Express MiniCard

Product Specification

(Document 2130697)

This document describes the mechanical and electrical

specifications, and standards compliance of the MC8775.

MC5720/5725/8755/8765/8775 Hardware Integration Guide

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MC87xx Modem CnS Reference

(Document 2130602) This document describes the CnS (Control and Status)

messages that are available for use with the MC8755/

MC8765/MC8775.

MC87xx Modem Extended AT

Command Reference

(Document 2130616)

This document describes proprietary AT commands for the

MC8755/MC8765/MC8775. For MC5720-specific

commands, see the EMXXXX Embedded Modem

Extended AT Command Reference (Document 2130395)

Mobile Station (MS)

Conformance Specification;

Part 4: Subscriber Interface

Module

This 3GPP technical specification describes SIM testing

methods.

The document (3GPP TS 11.10-4) can be downloaded

from www.3gpp.org.

PCI Express Mini Card

Electromechanical

Specification Revision 1.1

The document can be downloaded from www.pcisig.com.

Universal Serial Bus

Specification, Rev 2.0 The specification can be downloaded from www.usb.org.

Table 1-1: Related documentation (Continued)

Document title Description

Rev 1.3 Jul.06 9

2: Power Interface

Overview of operation

Note: This chapter contains information for both the CDMA (MC5720/

5725) and GSM (MC8755/8765/8775) modules.

Information that is unique to one module type is clearly identified.

Themoduleisdesignedtousea3.3V(nominal)powersupply,

providedbythehost.Itisthehost’sresponsibilitytoprovide

safeandcontinuouspowertothemoduleatalltimes;the

moduledoesNOThaveanindependentpowersupply,or

protectioncircuitstoguardagainstelectricalissues.

Themodule’spowerstateiscontrolledbythehost’sassertion/

de‐assertionoftheW_Disable#signal.Themodulealso

monitorsitssupplyvoltageandrequestsshutdownifthe

supplyisinsufficient.

Power signals

Themodulemustbeconnectedtoa3.3Vpowersupply(as

indicatedinPCIExpressMiniCardElectromechanicalSpecifi‐

cationRevision1.1).

TheMC8755/8765/8775hasmorepowerpinsthantheMC5720/

5725duetohigherpeakcurrentrequirementsforGSM

devices.

Fordetailedpinoutandvoltage/currentrequirementsofthese

modules,seetheProductSpecificationdocumentforyour

MiniCard.

Electrostatic discharge (ESD)

Youareresponsibleforensuringthatthehosthasadequate

ESDprotectionondigitalcircuitsandantennaports:

•(Operational)RFport(antennalaunchandRFconnector):

IEC‐61000‐4‐2—Level(ElectrostaticDischargeImmunityTest)

•(Non‐operational)Hostconnectorinterface:

JESD22‐A114‐B+/‐1kVHumanBodyModeland

JESD22‐C101+/‐125VChargedDeviceModel

Specificrecommendationsareprovidedwhereneededinthis

guide,however,thelevelofprotectionrequireddependson

yourapplication.

MC5720/5725/8755/8765/8775 Hardware Integration Guide

10 2130114

Note: ESD protection is highly recommended for the SIM connector

at the point where the contacts are exposed, and any other signals

from the host interface that would be subjected to ESD by the user of

the end product.

Module power states

Note: The module unit defaults

to the Normal state when

VCC3.3 is first applied in the

absence of W_Disable# control.

Atanytime,themodulewillbeinoneoffourpowerstates:

•Disconnected

Nopowertothemodule.

•Off

Powertothemodule,butthemoduleispoweredoff.

•Normal

Themoduleisactive.Severalmodesarepossible(Receive,

Transmit,Sleep,Shutdown).

•Low power (“airplane mode”)

Themoduleisactive,butRFisdisabled.

Statemachinesareimplementedinthemoduletomonitorthe

powersupplyandoperatingtemperature.

Disconnected state

Note: The difference between

the Disconnected and Off states

is that in the Off state, the

module is still connected to the

power source and draws minimal

current.

Thisstateoccurswhenthereisnopowertothemodule—the

hostpowersourceisdisconnectedfromthemoduleandall

voltagesassociatedwiththemoduleareat0V.

Whetherthehostdeviceisalsopoweredoffdependsonthe

powerraildesign.Iftheconnectionbetweenthepowerrail

andthemoduleiscontrolledbythehost,thehostcanstay

poweredonandcutthepowertoputthemodemintothe

disconnectedstate.Ifthepowerrailissharedbetweenthehost

deviceandthemodule,thehostispoweredoffwhenthe

moduleispoweredoff.

Off state

Inthisstate,thehostispoweredupandthemoduleis

powereddown(butstillconnectedtothepowersource).

Thehostkeepsthemodulepoweredoffbyasserting(driving

low)theW_Disable#signal.Inthisstate,themoduledraws

minimalcurrent.

Power Interface

Rev 1.3 Jul.06 11

Normal state

Note: This is the default state

when VCC3.3 is first applied in

the absence of W_Disable#

control.

Thisistheactivestateofthemodule.Whileinthisstate:

•Themoduleisfullypowered.

•Themoduleiscapableofplacing/receivingcallsorestab‐

lishingdataconnectionsonthewirelessnetwork.

•TheUSBinterfaceisfullyactive.

Low power mode

Inthispowerstate,RF(bothRxandTx)isdisabledinthe

module,buttheUSBinterfaceisstillactive.Thislowpower

mode(ʺairplanemodeʺ)iscontrolledbyasoftwarecommand

throughthehostinterface.

Forinstructionsonusingappropriatecommands,refertoAT

CommandSetforUserEquipment(UE)(Release6)(+CFUN=0

command),EM5625/MC5720CnSReference(Document2130643)

(CNS_RADIO_POWER[0x1075]),orMC87xxModemCnS

Reference(Document2130602)(DisableModem).

Usage models

Usagemodelscanbeusedtocalculateexpectedcurrent

consumption.AsampleusagemodelisprovidedinTable2‐1

Table 2-1: Power consumption of a sample application

Used by a field

worker (data only) Used for remote

data logging

Upload

(module Tx) 1000 kB/day 40 kB/h

Download

(module Rx) 500 kB/day 100 kB/day

Coverage /

data rate 1X / 80 kbps IS-95 / 14.4 kbps

Hours of

operation 8 / day (off 16 hrs/day) 24 / day

Total power

consumed

over 24

hours

60 mAh 200 mAh

MC5720/5725/8755/8765/8775 Hardware Integration Guide

12 2130114

Thisexamplemodelappliestoabattery‐operateddevice.In

practice,becausethemodulewillbeisolatedfromthebattery

(thehostdevicemanagesthepowersource),themAhratings

willdependonthedevice’ssupplyefficiency.

Themoduleautomaticallyentersslottedsleepmodewhen

thereisnotransmissionorreceptionoccurring(SCI=2).

Transmitpowerisassumedtobe+3dBm.

Rev 1.3 Jul.06 13

3: RF Integration

TheMC8755/8765/8775operatesonthefrequenciesdetailed

inTable3‐1.

RF connection

Considerthefollowingwhenattachinganantennatothe

module:

Note: To disconnect the

antenna, make sure you use the

Hirose U.FL connector removal

tool (P/N UFL-LP-N-2(01) to

prevent damage to the module

or coaxial cable assembly.

•UseaHiroseU.FLconnector(model

U.FL#CL331‐0471‐0‐10)toattachanantennatoa

connectionpointonthemodule,asshowninFigure3‐1

(ThemainRFconnectoronthetopside;thediversityRF

connectoronthebottomside).

•Matchcoaxialconnectionsbetweenthemoduleandthe

antennato50Ω.

•MinimizeRFcablelossestotheantenna;therecommended

maximumcablelossforantennacablingis0.5dB.

Table 3-1: MC8755/8765/8775 — Supported frequencies

Product Band Frequencies

(MHz)

MC8755 /

MC8765 /

MC8775

GSM 850 Tx: 824–849

Rx: 869-894

EGSM 900 Tx: 880-915

Rx: 925-960

DCS 1800 Tx: 1710-1785

Rx: 1805-1880

PCS 1900 Tx: 1850-1910

Rx: 1930-1990

MC8755 /

MC8775 Band I

UMTS 2100 Tx: 1920–1980

Rx: 2110–2170

MC8765 /

MC8775 Band II

UMTS 1900 Tx: 1850–1910

Rx: 1930–1990

Band V

UMTS 850 Tx: 824–849

Rx: 869–894

MC5720/5725/8755/8765/8775 Hardware Integration Guide

14 2130114

Figure 3-1: Antenna connection points and mounting

Ground connection

Whenconnectingthemoduletosystemground:

•Preventnoiseleakagebyestablishingaverygoodground

connectiontothemodulethroughthehostconnector.

•Connecttosystemgroundusingthetwomountingholesat

thetopofthemodule(asshowninFigure3‐1).

•MinimizegroundnoiseleakageintotheRF.

Dependingonthehostboarddesign,noisecouldpotentially

becoupledtothemodulefromthehostboard.Thisis

mainlyanissueforhostdesignsthathavesignalstraveling

alongthelengthofthemodule,orcircuitryoperatingat

bothendsofthemoduleinterconnects.

RF Integration

Rev 1.3 Jul.06 15

Shielding

ThemoduleisfullyshieldedtoprotectagainstEMIandto

ensurecompliancewithFCCPart15‐“RadioFrequency

Devices”(orequivalentregulationsinotherjurisdictions).

Note: The module shields must NOT be removed.

Antenna and cabling

Whenselectingtheantennaandcable,itiscriticaltoRFperfor‐

mancetomatchantennagainandcableloss.

Choosing the correct antenna and cabling

Considerthefollowingpointsforpropermatchingofantennas

andcabling:

•Theantenna(andassociatedcircuitry)shouldhavea

nominalimpedanceof50Ωwithareturnloss≤ 10dB

acrosseachfrequencybandofoperation.

•Thesystemgainvalueaffectsbothradiatedpowerand

regulatory(FCC,IC,CE,etc.)testresults.

Developing custom antennas

Considerthefollowingpointswhendevelopingcustom‐

designedantennas:

•AskilledRFengineershoulddothedevelopmenttoensure

thattheRFperformanceismaintained.

•Identifythebandsthatneedtobesupported,particularly

whenboththeMC5720/5725andMC8755/8765/8775willbe

installedinthesameplatform.Inthiscase,youmaywantto

developseparateantennasformaximumperformance.

Determining the antenna’s location

Considerthefollowingpointswhendecidingwheretoputthe

antenna:

•AntennalocationmayaffectRFperformance.Althoughthe

moduleisshieldedtopreventinterferenceinmostapplica‐

tions,theplacementoftheantennaisstillveryimportant—

ifthehostdeviceisinsufficientlyshielded,highlevelsof

broadbandorspuriousnoisecandegradethemodule’s

performance.

•Connectingcablesbetweenthemoduleandtheantenna

musthave50Ωimpedance.Iftheimpedanceofthemodule

ismismatched,RFperformanceisreducedsignificantly.

•Antennacablesshouldberouted,ifpossible,awayfrom

noisesources(switchingpowersupplies,LCDassemblies,

MC5720/5725/8755/8765/8775 Hardware Integration Guide

16 2130114

etc.).Ifthecablesarenearthenoisesources,thenoisemay

becoupledintotheRFcableandintotheantenna.

Disabling the diversity antenna (MC5720/5725)

IfyourhostdeviceisnotdesignedtousetheMC5720/5725’s

diversityantenna,terminatetheinterfacewithano‐connect.

Interference and sensitivity

Note: These modules are based

on ZIF (Zero Intermediate

Frequency) technologies; when

performing EMC

(Electromagnetic Compatibility)

tests, there are no IF

(Intermediate Frequency)

components from the module to

consider.

SeveralsourcesofinterferencecanaffecttheRFperformance

ofthemodule(RFdesense).Commonsourcesincludepower

supplynoiseanddevice‐generatedRF.

RFdesensecanbeaddressedthroughacombinationof

mitigationtechniquesandradiatedsensitivitymeasurement.

Power supply noise

NoiseinthepowersupplycanleadtonoiseintheRFsignal.

Thepowersupplyripplelimitforthemoduleisnomorethan

200mVp‐p1Hzto100kHz.Thislimitincludesvoltageripple

duetotransmitterburstactivity

Interference from other wireless devices

Differentwirelessdevicesoperatinginsidethehostdevicecan

causeinterferencethataffectsthemodule.

Todeterminethemostsuitablelocationsforeachantennaon

yourhostdevice,evaluateeachwirelessdevice’sradiosystem,

consideringthefollowing:

•Anyharmonics,sub‐harmonics,orcross‐productsofsignals

generatedbywirelessdevicesthatfallinthemodule’sRx

rangemaycausespuriousresponseresultingindecreased

Rxperformance.

•TheTxpowerandcorrespondingbroadbandnoiseofother

wirelessdevicesmayoverloadorincreasethenoisefloorof

themodule’sreceiver,resultinginRxdesense.

Theseverityofthisinterferencedependsontheclosenessof

theotherantennastothemodule’santenna.Todetermine

suitablelocationsforeachwirelessdevice’santenna,

thoroughlyevaluateyourhostdevice’sdesign.

RF Integration

Rev 1.3 Jul.06 17

Device-generated RF

Note: The module can cause

interference with other devices

such as hearing aids and on-

board speakers.

Wireless devices such as the

MiniCard transmit in bursts

(pulse transients), for set

durations (RF burst frequencies).

Hearing aids and speakers

convert these burst frequencies

into audible frequencies,

resulting in audible noise.

AllelectroniccomputingdevicesgenerateRFinterferencethat

cannegativelyaffectthereceivesensitivityofthemodule

(RFdesense).

Theproximityofhostelectronicstotheantennainwireless

devicescancontributetoRFdesense.Componentsthatare

mostlikelytocauseRFdesenseinclude:

•Microprocessorandmemory

•Displaypanelanddisplaydrivers

•Switching‐modepowersupplies

These,andotherhigh‐speeddevices(inparticular,the

processor)cancauseRFdesensebecausetheyrunat

frequenciesoftensofMHz.Therapidriseandfallofthese

clocksignalsgenerateshigher‐orderharmonicsthatoftenfall

withintheoperatingfrequencybandofthemodule,causing

RFdesense.

Example

Onasub‐systemrunningat40MHz,the22ndharmonicfalls

at880MHz,whichiswithinthecellularreceivefrequency

band.

Note: In practice, there are usually numerous interfering frequencies

and harmonics. The net effect can be a series of desensitized receive

channels.

MC5720/5725/8755/8765/8775 Hardware Integration Guide

18 2130114

Rev 1.3 Jul.06 19

4: Host/Module Communication

Interface

ThischapterprovidesinformationabouttheHost‐Module

communicationinterface(USBinterface)andlistsofextended

ATcommandsthatmaybeusefulforhardwareintegration

testing.

Note: On any given interface (USB, USIM/RUIM, etc.), leave unused

inputs and outputs as no-connects.

LED output

ThemoduledrivestheLEDoutputaccordingtothePCI‐

ExpressMiniCardspecification(summarizedinTable4‐1,

below).

Table 4-1: LED States

State Indicates Characteristics

OFF Module is not

powered. Light is turned off.

ON Module is powered

and connected, but

not transmitting or

receiving.

Light is turned on.

Slow Blink Module is powered

and searching for a

connection.

LED is flashing at a steady,

slow rate.

•250 ms ± 25% ON period

•0.2 Hz ± 25% blink rate

Intermittent

Blink Module is transmitting

or receiving. LED is flashing

intermittently, proportional to

activity on the interface.

•50% duty cycle

•3 Hz minimum blink rate

•20 Hz maximum blink

rate

MC5720/5725/8755/8765/8775 Hardware Integration Guide

20 2130114

Figure 4-1: Example LED

Current limiting Resistor

LED

VCC 3.3V

MIO

MiniCard

Rev 1.3 Jul.06 21

5: Regulatory Information

Important notice

Becauseofthenatureofwirelesscommunications,trans‐

missionandreceptionofdatacanneverbeguaranteed.Data

maybedelayed,corrupted(i.e.,haveerrors)orbetotallylost.

Althoughsignificantdelaysorlossesofdataarerarewhen

wirelessdevicessuchastheSierraWirelessmodemareusedin

anormalmannerwithawell‐constructednetwork,theSierra

Wirelessmodemshouldnotbeusedinsituationswherefailure

totransmitorreceivedatacouldresultindamageofanykind

totheuseroranyotherparty,includingbutnotlimitedto

personalinjury,death,orlossofproperty.SierraWirelessand

itsaffiliatesacceptnoresponsibilityfordamagesofanykind

resultingfromdelaysorerrorsindatatransmittedorreceived

usingtheSierraWirelessmodem,orforfailureoftheSierra

Wirelessmodemtotransmitorreceivesuchdata.

Safety and hazards

DonotoperateyourMC5720/MC5725/MC8755/MC8765/

MC8775modem:

•Inareaswhereblastingisinprogress

•Whereexplosiveatmospheresmaybepresentincluding

refuellingpoints,fueldepots,andchemicalplants

•Nearmedicalequipment

•Nearlifesupportequipment,oranyequipmentwhichmay

besusceptibletoanyformofradiointerference.Insuch

areas,theMC5720/MC5725/MC8755/MC8765/MC8775

modemMUSTBEPOWEREDOFF.Otherwise,the

MC5720/MC5725/MC8755/MC8765/MC8775modemcan

transmitsignalsthatcouldinterferewiththisequipment.

Inanaircraft,theMC5720/MC5725/MC8755/MC8765/MC8775

modemMUSTBEPOWEREDOFF.Otherwise,theMC5720/

MC5725/MC8755/MC8765/MC8775modemcantransmit

signalsthatcouldinterferewithvariousonboardsystemsand

maybedangeroustotheoperationoftheaircraftordisrupt

thecellularnetwork.Useofacellularphoneinanaircraftis

illegalinsomejurisdictions.Failuretoobservethisinstruction

mayleadtosuspensionordenialofcellulartelephoneservices

totheoffender,orlegalactionorboth.

MC5720/5725/8755/8765/8775 Hardware Integration Guide

22 2130114

Someairlinesmaypermittheuseofcellularphoneswhilethe

aircraftisonthegroundandthedoorisopen.TheMC5720/

MC5725/MC8755/MC8765/MC8775modemmaybeused

normallyatthistime.

Important compliance

information for North American

users

TheMC5720/MC5725/MC8755/MC8765/MC8775modemhas

beengrantedmodularapprovalformobileapplications.

IntegratorsmayusetheMC5720/MC5725/MC8755/MC8765/

MC8775modemintheirfinalproductswithoutadditional

FCC/IC(IndustryCanada)certificationiftheymeetthe

followingconditions.Otherwise,additionalFCC/IC

approvalsmustbeobtained.

1. Atleast20cmseparationdistancebetweentheantennaand

theuser’sbodymustbemaintainedatalltimes.

2. TocomplywithFCC/ICregulationslimitingbothmaximum

RFoutputpowerandhumanexposuretoRFradiation,the

maximumantennagainincludingcablelossinamobile‐only

exposureconditionmustnotexceed:

·8dBiintheCellularbandand4dBiinthePCSbandforthe

MC8755/MC8765/MC8775

·4.65dBiintheCellularbandand3.35dBiinthePCSband

fortheMC5720/MC5725

3. TheMC5720/MC5725/MC8755/MC8765/MC8775modem

anditsantennamustnotbeco‐locatedoroperatingin

conjunctionwithanyothertransmitterorantennawithina

hostdevice.

4. Alabelmustbeaffixedtotheoutsideoftheendproductinto

whichtheMC5720/MC5725/MC8755/MC8765/MC8775

modemisincorporated,withastatementsimilartothe

following:

·ForMC5720:

ThisdevicecontainsTXFCCID:N7N‐MC5720

Thisequipmentcontainsequipmentcertifiedunder

IC:2417C‐MC5720

·ForMC5725:

ThisdevicecontainsTXFCCID:N7N‐MC5725

Thisequipmentcontainsequipmentcertifiedunder

IC:2417C‐MC5725

·ForMC8755:

ThisdevicecontainsTXFCCID:N7NMC8755

Thisequipmentcontainsequipmentcertifiedunder

IC:2417C‐MC8755

Regulatory Information

Rev 1.3 Jul.06 23

·ForMC8765:

ThisdevicecontainsTXFCCID:N7NMC8765

Thisequipmentcontainsequipmentcertifiedunder

IC:2417C‐MC8765

·ForMC8775:

ThisdevicecontainsTXFCCID:N7NMC8775

Thisequipmentcontainsequipmentcertifiedunder

IC:2417C‐MC8775

5. Ausermanualwiththeendproductmustclearlyindicatethe

operatingrequirementsandconditionsthatmustbeobserved

toensurecompliancewithcurrentFCC/ICRFexposure

guidelines.

TheendproductwithanembeddedMC5720/MC5725/

MC8755/MC8765/MC8775modemmayalsoneedtopassthe

FCCPart15unintentionalemissiontestingrequirementsand

beproperlyauthorizedperFCCPart15.

Note:Ifthismoduleisintendedforuseinaportabledevice,

youareresponsibleforseparateapprovaltosatisfytheSAR

requirementsofFCCPart2.1093andICRSS‐102.

MC5720/5725/8755/8765/8775 Hardware Integration Guide

24 2130114

Rev 1.3 Jul.06 25

A: Acronyms and Definitions

Table 5-1: Acronyms and definitions

Acronym or term Definition

AGC Automatic Gain Control

BER Bit Error Rate - a measure of receive sensitivity

BLER Block Error Rate

Call Box Base Station Simulator - Agilent E8285A or 8960, Rohde &

Schwarz CMU200

CDMA Code Division Multiple Access

dB Decibel = 10 x log10 (P1/P2)

P1 is calculated power; P2 is reference power

Decibel = 20 x log10 (V1/V2)

V1 is calculated voltage, V2 is reference voltage

dBm Decibels, relative to 1 mW - Decibel(mW) = 10 x log10 (Pwr (mW)/

1mW)

DUT Device Under Test

EDGE Enhanced Data rates for GSM Evolution

EM Embedded Module

ESD ElectroStatic Discharge

FER Frame Error Rate - a measure of receive sensitivity

GPRS General Packet Radio Service

GPS Global Positioning System

GSM Global System for Mobile communications

Hz Hertz = 1 cycle/second

inrush current Peak current drawn when a device is connected or powered on

IS-2000 3G radio standards for voice and data (CDMA only)

IS-95 2G radio standards targeted for voice (cdmaONE)

LDO Low Drop Out - refers to linear regulator

MC5720 / MC5725 Sierra Wireless MiniCards used on CDMA networks

MC5720/5725/8755/8765/8775 Hardware Integration Guide

26 2130114

MC8755 / MC8765 /

MC8775 Sierra Wireless MiniCards used on GSM networks

MHz MegaHertz = 10E6 Hertz (Hertz = 1 cycle/second)

MIO Module Input/Output

MPE Maximum Permissible Exposure — the level of radiation to which a

person may be exposed without hazardous effect or adverse

biological changes

OTA Over The Air or Radiated through the antenna

PCS Personal Communication System - PCS spans the 1.9 GHz radio

spectrum

RF Radio Frequency

RMS Root Mean Square

RUIM Removable User Identity Module

SA Selective Availability

Sensitivity (Audio) Measure of lowest power signal that the receiver can measure

Sensitivity (RF) Measure of lowest power signal at the receiver input that can

provide a prescribed BER/BLER/SNR value at the receiver output.

SIM Subscriber Identity Module

SNR Signal to Noise Ratio

SOF Start of Frame - a USB function

UART Universal Asynchronous Receiver Transmitter

UDK Universal Development Kit

UMTS Universal Mobile Telecommunications System

USB Universal Serial Bus

USIM Universal Subscriber Identity Module

VCC3.3 3.3 V supply voltage

WCDMA Wideband Code Division Multiple Access — In this document, the

term “UMTS” is used instead of “WCDMA”.

XIM In this document, XIM is used as part of the contact identifiers for

the USIM/RUIM interface (XIM_VCC, XIM_CLK, etc.). It indicates

either RUIM or USIM.

Table 5-1: Acronyms and definitions

Acronym or term Definition

Rev 1.3 Jul.06 27

Index

acronymsanddefinitions 25–26

airplanemode 11

antenna

connectionandmountingpoints 14

connectionconsiderations 13

custom,considerations 15

diversityantenna,disabling 16

limit,matchingcoaxialconnections 13

location,considerations 15

matching,considerations 15

maximumcableloss 13

ATcommands

3GPPspecification,details 7

extended,MC5720/5725 7

extended,MC8755/8765/8775 8

lowpowermode,setting 11

cableloss

antenna,maximum 13

CnS

MC5720reference,details 7

MC8755/8765/8775reference,details 8

connection

grounding 14

connectors,required

EDGEmating(52‐pin) 6

host‐module 6

RF,Hirose 6

USIM/RUIM 6

current

consumption

usagemodels 11

DCS1800

RFparameters,MC8755/8765/8775 13

defaultstate(Normal),module 11

desense.SeeRF

disconnected,modulepowerstate 10

diversityantenna

disabling 16

EGSM900

RFparameters,MC8755/8765/8775 13

electrostaticdischarge.SeeESD

ESD

protectionrequirements 9–10

testingtechniquesdocument(IEC‐61000‐4‐2) 7

FCC

regulations,relevantsection 7

grounding

connectionconsiderations 14

groundloops,avoiding 15

GSM850

RFparameters,MC8755/8765/8775 13

Host⁄Moduleinterface 19–20

interference

devicegenerated 17

powersupplynoise 16

wirelessdevices 16

LED

example 20

state

intermittentblink 19

off 19

on 19

slowblink 19

lowpowermode

setting,ATcommands 11

lowpower,modulepowerstate 11

MC5720

CnSreference,details 7

productspecification 7

MC5720/5725

extendedATcommands 7

MC8755/8765

productspecification 7

MC8755/8765/8775

CnSreference,details 8

extendedATcommands 8

RFparameters 13

MC5720/5725/8755/8765/8775 Hardware Integration Guide

28 2130114

MC8775

productspecification 7

minicard

PCIExpressSpecification,details 8

SeealsoMC5720⁄5725;MC8755⁄8765⁄8775

module

powerstates 10–11

module,defaultpowermode(Normal) 11

noise

leakage,minimizing 14

RFinterference,powersupply 16

normal,modulepowerstate 11

off,modulepowerstate 10

PCIExpress

minicardspecificationdetails 8

PCS1900

RFparameters,MC8755/8765/8775 13

power

disconnected,characteristics 10

normal,characteristics 11

off,characteristics 10

signals,overview 9

state,disconnected 10

state,lowpower 11

state,normal 11

state,off 10

states,module 10–11

supply,RFinterference 16

powerinterface 9–12

ProductSpecificationDocument.SeePSD

PSD

MC5720⁄5725,details 7

MC8755/8765,details 7

MC8775,details 7

regulatoryinformation

FCC 22

limitationofliability 21

safetyandhazards 21

antennacableloss,maximum 13

antennaconnection,considerations 13

cabletype,required 6

desense

device‐generated 17

integration 13–17

interference

otherdevices 17

powersupply 16

wirelessdevices 16

parameters

DCS1800 13

EGSM900 13

GSM850 13

MC8755/8765/8775 13

PCS1900 13

UMTS1900 13

UMTS2100 13

UMTS850 13

shielding

module,compliance 15

SIM.SeeUSIM/RUIM

testing

ESDimmunity,techniquesdocument(IEC‐61000‐

4‐2) 7

UDK.SeeUniversalDevelopmentKit

UMTS1900

RFparameters,MC8755/8765/8775 13

UMTS2100

RFparameters,MC8755/8765/8775 13

UMTS850

RFparameters,MC8755/8765/8775 13

UniversalDevelopmentKit

components,included 5

UniversalSerialBus.SeeUSB

usagemodels

currentconsumption 11

USB

specification,details 8

USIM/RUIM

connectortype,required 6

Sierra Wireless MC8775 Multi-Mode & Multi-Band Wireless Network MiniCard User Manual FCC submission HW Integration Guide

Sierra Wireless Inc. Multi-Mode & Multi-Band Wireless Network MiniCard FCC submission HW Integration Guide

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