Samsung SGH-X430 Bedienungsanleitung

SGH-X430

SERVICE

Manual

GSMTELEPHONECONTENTS

1.Specification

2.CircuitDescription

3.FlowChartofTroubleshooting

4.ExplodedViewsand PartsList

5.ElectricalPartsList

6.BlockDiagrams

7.PCB Diagrams

GSMTELEPHONE

ThisServiceManual isa propertyofSamsung

ElectronicsCo.,Ltd.

Anyunauthorized use ofManualcan bepunished

underapplicableInternationaland/ordomesticlaw.

ELECTRONICS

Samsung ElectronicsCo.,Ltd.December.2003

Printedin Korea.

CodeNo.:GH68-04389A

BASIC.

ⓒ

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1. SGH-X430 Specification

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GSM900

Phase1EGSM900

Phase2DCS1800

Phase1

Freq.Band[MHz]

Uplink/Downlink 890~915

935~960 880~915

925~960 1710~1785

1805~1880

ARFCNrange1~124 0~124 &975~1023 512~885

Tx/Rxspacing 45MHz45MHz95MHz

Mod.Bit rate/

Bit Period 270.833kbps

3.692us270.833kbps

3.692us

TimeSlot

Period/FramePeriod 576.9us

4.615ms576.9us

4.615ms

Modulation 0.3GMSK0.3GMSK0.3GMSK

MS Power33dBm~13dBm33dBm~5dBm30dBm~0dBm

PowerClass 5pcl~15pcl5pcl~19pcl0pcl~15pcl

Sensitivity-102dBm-102dBm-100dBm

TDMAMux 8 8 8

Cell Radius35Km35Km2Km

1. GSMGeneralSpecification

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1. SGH-X430 Specification

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TXPower

control levelGSM900

5 33±2 dBm

6 31±2 dBm

7 29±2 dBm

8 27±2 dBm

9 25±2 dBm

10 23±2 dBm

11 21±2 dBm

12 19±2 dBm

13 17±2 dBm

14 15±2 dBm

15 13±2 dBm

16 11±3 dBm

17 9±3dBm

18 7±3 dBm

19 5±3 dBm

TXPower

control levelDCS1800

0 30±3 dBm

1 28±3 dBm

2 26±3 dBm

3 24±3 dBm

4 22±3 dBm

5 20±3 dBm

6 18±3 dBm

7 16±3 dBm

8 14±3 dBm

9 12±4 dBm

10 10±4 dBm

11 8±4dBm

12 6±4 dBm

13 4±4 dBm

14 2±5 dBm

15 0±5 dBm

2. GSMTXpower class

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2. SGH-X430 Circuit Description

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1.SGH-X430 RFCircuit Description

1)RXPART

1.ASM(U201)

ðSwitchingTx, RxpathforGSM900,DCS1800 bylogic controlling.

2.ASM ControlLogic(U501,U502)

ðTruthTable

VC1VC2

GSMTxMode LH

DCSTxMode HL

GSM/DCSRxMode L L

3.FILTER

Toconvert ElectromagneticFieldWavetoAcousticWaveandthenpass the

specificfrequencyband.

-GSM FILTER (F100)

ðForfilteringthefrequencyband between925 ~960 MHz

-DCS FILTER (F101)

ðForfilteringthefrequencyband 1805 and 1880 MHz.

4.VCTCXO(OSC100)

To generatethe 13MHzreferenceclock todrivethelogic andRF.

Afteradditional process,thereferenceclock isapplied totheU100 RxIQ

demodulatorandTxIQmodulator.

TheoscillatorforRXIQdemodulatorandTxmodulatorarecontrolled by

serial datatoselectchannel and usefastlock mode forGPRShighclass

operation.

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2. SGH-X430 Circuit Description

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5.Si4205 (U100)

Thischipintegratesthree differential-input LNAs.

TheGSM inputsupportstheE-GSM,DCSinputsupportstheDCS1800,PCS

inputsupportsthePCS1900.TheLNAinputsare matched tothe 200 ohm

differential outputSAW filtersthrougheternal LCmatchingnetwork.

Image-rejectmixerdownconvertstheRFsignal toa100 KHzintermediate

frequency(IF)withtheRFLOfromSI4133Tfrequencysynthesizer.

TheRFLOfrequencyisbetween1737.8~1989.9MHz.

TheMixeroutput isamplified withananalog programmablegain

amplifier(PGA),whichiscontrolled byAGAIN.

Thequadrature IFsignal isdigitized with highresolutionA/Dconverts(ADC).

TheSI4205 down-convertsthe ADCoutput tobasebandwithadigital

100 KHzquadratureLOsignal.

Digital decimationand IIRfiltersperformchannelselectiontoremove blocking

andreferenceinterfacesignals.Afterchannelselection,the digital output is

scaled withadigital PGA,whichiscontrolled withtheDGAIN.DACsdrivea

differential analog signal ontotheRXIP, RXIN, RXQP, RXQNpins tointerface

tostandardanalog-inputbaseband IC.

2)TXPART

Baseband IQsignal fed into offsetPLL,thisfunctionisincluded inside

of U100 chip.

SI4205 chipgeneratesmodulatorsignal which powerlevelisabout1.5dBm

andfed intoPowerAmplifier(U200).

ThePAoutputpowerandpower rampingarewell controlled byAuto

PowerControl circuit.We useoffsetPLL below,

Modulation

Spectrum

200kHzoffset

30 kHzbandwidth

GSM-35dBc

DCS -35dBc

PCS -35dBc

400kHzoffset

30 kHzbandwidth

GSM-66dBc

DCS -65dBc

PCS -66dBc

600kHz~1.8MHzoffset

30 kHzbandwidth

GSM-75dBc

DCS -68dBc

PCS -75dBc

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2. SGH-X430 Circuit Description

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2.BasebandCircuit descriptionof SGH-X430

1)PSC2106

1.PowerManagement

Sevenlow-dropout regulatorsdesigned specificallyforGSM applications

power theterminal andhelpensureoptimal system performanceandlong

batterylife.

AprogrammableLDOprovides support for1.8V,3.0VSIMs,whilea

self-resetting,electronicallyfused switchsuppliespower toexternal

accessories.Ancillarysupport functions,suchastwoLEDdriversandtwo

call-alert drivers, aidinreducingbothboardarea andsystem complexity.

Afour-wireserial interface unit(SIU)providesaccess tocontrol and

configurationregisters.Thisinterfacegivesamicroprocessorfull controlof

thePSC2106 and enables system designerstomaximize bothstandbyand

talk times. Error reportingisprovided via aninterruptsignal andstatus

Supervisoryfunctions.includingaresetgenerator, aninputvoltage monitor,

andathermal monitor,support reliablesystem design.Thesefunctions

worktogether toensurepropersystem behaviorduringstart-upor inthe

eventofafaultcondition(lowmicroprocessorvoltage,insufficientbattery

energy,orexcessive dietemperature).

2.Battery ChargeManagement

A batterycharge managementblock, incorporatinganinternal PMOSswitch,

andan8-bit ADC,providesfast,efficientcharging ofsingle-cell Li-Ion

battery.Used inconjunctionwitha current-limited voltagesource,thisblock

safelyconditions near-deadcellsandprovidestheoptionofhaving

fast-chargeandtop-off controlled internallyorbythesystem's

microprocessor.

3.Backlight LED Driver

The backlight LEDdriver isa low-side,programmablecurrentsource

designed tocontrolthe brightness ofthekeyboardandLCDillumination.

LED1_DRViscontrolled viaLED1_[0:2]andcanbe programmed tosink

from 15mA to60mA in7.5mA steps.LED2_DRViscontrolled viaLED2_

[0:2]andcanbe programmed tosinkfrom 5mA to40mA in5mA steps.

BothLEDdriversarecapableofsinkingtheir maximum outputcurrentata

worst-case maximum outputvoltageof0.6V.Forefficientuse,theLEDsis

connected betweenthe batteryandtheLED_DRVoutput.

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4.VibratorMotorDriver

Thevibratormotordriver isa low-side,programmablevoltagesource

designed todriveasmall dcmotor thatsilentlyalertsthe userofan

incomingcall. The driver iscontrolled byVIB[0:1]andcanbe programmed

tomaintainamotorvoltageof1.3V,2.0V,or2.5V(relativetoVBAT)while

sinkingupto100mA.Forefficientuse,thevibratormotorshould be

connected betweenthe mainbatteryandtheVIB_DRVoutput.

2)Connector

1.LCDConnector

LCDisconsisted ofmainLCD(color65K UFBLCD).Chipselectsignalsof

EMIpart inthetrident,CLCD_EN, canenable mainLCD.LED_ENsignal

enableswhiteLEDofmainLCDandEL_ENsignal enablesdimmingmode

ofmainLCD.

Thesetwosignalsarefrom IO part oftheDSPinthetrident. RST signal

from 2106 initiatestheinitial process oftheLCD.

16-bit data lines(D(0)~D(15)) transfersdata andcommandstoLCDthrough

emi_filter.Data andcommandsuse A(2)signal. Ifthis signal ishigh,Inputs

toLCDarecommands.Ifit islow,InputstoLCDare data. Thesignal

whichinformstheinputoroutputstatetoLCD,isrequired.But this system

is notnecessarythis signal. SoCP_WENsignal isused towrite dataor

commandstoLCD.

Powersignalsfor LCDare+VBATT andVCCD.

SPK1PandSPK1N fromCSP1093 are used foraudiospeaker.And

YMU_VIB_EN fromMA-3 enablesthe motor.

2.JTAGConnector

TridenthastwoJTAGportswhichareforARMcoreandDSP

core(DSP16000).Sothis system hastwoport connectorfor theseports.

Pins' initialsforARMcoreare'CP_' andpins' initialsforDSPcoreare

'DSP_'.

CP_TDIandDSP_TDIsignal are used for inputofdata. CP_TDOand

DSP_TDOsignalsare used for theoutputofthe data. CP_TCKand

DSP_TCKsignalsare used forclock because JTAGcommunicationisa

synchronous.CP_TMS andDSP_TMS signalsaretestmode signals.The

difference betweentheseistheRESET_INT signal whichisforARMcore

RESET.

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2. SGH-X430 Circuit Description

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3.Keypadconnector

Thisisconsisted ofkeyinterfacepins inthetrident,KEY_ROW[0~4]and

KEY_COL[0~4].Thesesignalscomposethe matrix. Resultofmatrixinforms

thekeystatustokeyinterfaceinthetrident.Some pins areconnected to

varistorforESD protection.Andpoweron/off keyis seperated fromthe

matrix.

Sopoweron/off signal isconnected with PSC2106 toenablePSC2106.

SVC_GREEN,SVC_REDandSVC_BLUE arefrom OCTLofCSP1093.

Thesesignalsdecide thecolorofLED,serviceindicator.

NinekeyLEDusethe+VBATT supplyvoltage.Theseareconnected to

BACKLIGHT signal inthePSC2106.

This signal enablesLEDswithcurrentcontrol. FLIP_SNS informsthestatus

of folder(openorclosed)tothetrident.Thisusesthehall effectIC,

A3210ELH.

A magnetundermainLCDenablesA3210ELHwhichisonthe mainPCB.

4. EMIFiltering

This system usestheEMIFilter toreducenoisefromLCD part.Some

controlsignalsareconnected toLCDwithoutEMIfiltering.

3)IFconnetor

It is23-pinconnector, and uses18-pinatpresent.Theyare designed touse

SDS,DEBUG,DLC-DETECT,JIG_ON,VEXT,VTEST,VF,+VBATT andGND.

Theyconnected topowersupplyIC,microprocessorandsignal processorIC.

4)Audio

AOUTAP,AOUTAN fromCSP1093 isconnected tothespeakervia analog

switch.AOUTBPand AOUTBNareconnected tothe ear-micspeakervia

ear-jack. MICINandMICOUTareconnected tothe mainMIC.And AUXINand

AUXOUTareconnected totheEar-mic.

YMU762MA3 isaLSIforportabletelephonethat iscapableofplayinghigh

qualitymusicbyutilizingFM synthesizerand ADPCMdecorder thatare

included inthisdevice.

Asasynthesis,YMU762MA3 isequipped 16 voiceswithdifferenttones.Since

the deviceiscapableofsimultaneouslygeneratinguptosynchronouswiththe

playoftheFM synthesizer, various sampled voicescanbe used as sound

effects.

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2. SGH-X430 Circuit Description

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SincetheplaydataofYMU762MA3 areinterpreted atanytime throughFIFO,

thelengthofthe data(playingperiod)is notlimited,sothe devicecan

flexiblysupport application suchasincomingcall melodymusicdistribution

service.Thehardwaresequencerbuilt inthisdeviceallowsplaying ofthe

complexmusicwithoutgivingexcessiveloadtotheCPUoftheportable

telephones.Moreover,theregistersoftheFM synthesizercanbe operated

directlyfor real time soundgeneration, allowing,forexample,utilizationof

various sound effectswhenusingthegame softwareinstalled intheportable

telephone.

YMU762 includesaspeakeramplifier with highrippleremoval ratewhose

maximum output is550mW(SPVDD=3.6V).The deviceisalsoequipped with

conventional functionincludinga vibartoranda circuit forcontrollingLEDs

synchornouswithmusic.

For theheadphone,it isprovided withastereophonicoutput terminal.

For thepurposeofenablingYMU762MA3 todemonstarteitsfull capablities,

Yamahapurposetouse"SMAF:SyntheticmusicMobile ApplicationFormat"asa

datadistributionformat that iscompatiblewihtmultimedia. SincetheSMAF

takesastructurethatsetsimportanceonthesynchronizationbetween sound

andimages, variouscontentscanbe writtenintoit includingincomingcall

melodywithwordsthatcanbe used for traningkaraoke, andcommercial

channelthatcombinestexts,imagesandsounds, andothers.Thehardware

sequencerofYMU762MA3 directlyinterpretsandplaysblocksrelevant to

systhesis(playingmusic andreproducingADPCMwithFM synthesizer)thatare

included indatadistributed inSMAF.

5)Memory

This system usesSHARP's memory,LRS1828.

It isconsisted of128Mbitsflashmemoryand 32MbitsSCRAM.Ithas16 bit

data line,D[0~15]whichisconnected totrident,LCDorCSP1093.Ithas22

bit address lines,A[1~22].Theyareconnected too.CP_CSROMENand

CO_CSROM2ENsignals, chipselectsignalsinthetridentenabletwomemories.

Theyuse 3 voltsupplyvoltage,VCCD.

Duringwrtingprocess,CP_WENislowandit enableswritingprocess toflash

memoryandSCRAM.Duringreadingprocess,CP_OENislowandit output

informationwhichislocated at theaddress fromthetrident intheflash

memoryorSCRAMtodata lines. Eachchipselectsignalsinthetridentselect

memoryamong2flashmemoryandSCRAM. Reading or writingprocedureis

processed afterCP_WENorCP_OENisenabled.MemoriesuseFLASH_RESET,

whichisbuffered signal ofRESETfromPSC2106,forESD protection.A[0]

signal enableslowerbyteof SCRAMandUPPER_BYTEsignal enableshigher

byteof SCRAM.

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