讲义课件教案

TPS2546-ZHCSBW0A–OCTOBER2013–REVISEDDECEMBER 应用范 车器件模型(HBM)静电放电(ESD)分类等 USB端口（主机和集线器 器件充电器件模型(CDM)ESD分类等级 工作电压范围：4.5V针对未连接至充电下游端口(CDP)的器件的自动 描准下行端口(SDP)和CDP切 TPS2546-Q1是一款具有集成USB2.0高速数据线符合USB电池充电技术规范1.2的D+/D-CDP和 (D+/D-)开关的USB充电端口控制器和电源开关。充电端口(DCP)模式 TPS2546-Q1在D+和D-上提供电子签名，以支持充符合中国电信业标准YD/T1591-2009的D+/D- 接模 在非BC1.2器件中自动选择充电模 器件的充电以确保与BC1.2和非BC1.2兼容器件的D+/D–分配器模式2/2.7V和 容性D+/D-1.2V与TPS2543插槽和物料(BOM)兼16(WQFN)(3

STATUS引脚实现电源TPS2546-Q1器件完全支持S3中唤醒）。TPS2456-Q173m配电开关用于有可能遇到高电容封 LLPowerBus4.5V–5.5V0.1µFLL

ToPortableDevice

161514112161514112 11DM 10DP49 ILIM

DM

STATUSSignalFaultSignalILIMSelect

(10 (10

ILIMSEL

ILIM

RR

DPOUTILIM

PowerSwitchENModeSelect

DMINDPINDMOUTDP

ToHostControllerPleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemiconductorproductsanddierstheretoappearsattheendofthisdatasheet.Copyright©2013,TexasInstrumentsPowerPADisCopyright©2013,TexasInstrumentsPRODUCTIONDATAinformationiscurrentasofpublicationdate.ProductsconformtospecificationsperthetermsoftheInstrumentsstandardwarranty.Productionprocessingdoes EnglishDataSheet:necessarilyincludetestingofallThisintegratedcircuitcanbedamagedbyESD.TexasInstruments mendsthatallintegratedcircuitsbehandledwithappropriateprecautions.Failuretoobserveproperhandlingandinstallationprocedurescancausedamage.ESDdamagecanrangefromsubtleperformancedegradationtocompletedevicefailure.Precisionintegratedcircuitsmaybemoresusceptibletodamagebecauseverysmallparametricchangescouldcausethedevicenottomeetitspublishedspecifications. UMoveroperating-airtemperaturerange,voltagesarereferencedtoGND(unlessotherwiseVoltageIN,EN,ILIM_LO,ILIM_HI,FAULT,STATUS,ILIM_SEL,CTL1,CTL2,CTL3,OUT7VINto7DP_IN,DM_IN,DP_OUT,(IN+0.3)orInputclampDP_IN,DM_IN,DP_OUT,ContinuouscurrentinSDPorCDPDP_INtoDP_OUTorDM_INtoContinuouscurrentinBC1.2DCPDP_INtoFAULT,2V(1)StressesbeyondthoselistedunderAbsoluteumRatingsmaycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunder mendedOperatingConditionsisnotimplied.Exposuretoabsolute-um-ratedconditionsforextendedperiodsmayaffectdevicereliability.THERMALRTE(16Junction-to-case(top)Formoreinformationabouttraditionalandnewthermalmetrics,seetheICPackageThermalMetricsapplicationreport,voltagesarereferencedtoGND(unlessotherwiseInputvoltage,VInputvoltage,logic-levelinputs,EN,CTL1,CTL2,CTL3,0VInputvoltage,datalineinputs,DP_IN,DM_IN,DP_OUT,0VHigh-levelinputvoltage,EN,CTL1,CTL2,CTL3,VLow-levelinputvoltage,EN,CTL1,CTL2,CTL3,VContinuouscurrent,datalineinputs,SDPorCDPmode,DP_INtoDP_OUT,DM_INtoContinuouscurrent,datalineinputs,BC1.2DCPmode,DP_INto0A0RLCurrent-limitsetUnlessotherwisenoted:–40≤TJ≤125°C,4.5V≤VIN≤5.5V,VEN=VN,VILIM_SEL=VN,VCTL1=VCTL2=VCTL3=VN.RFAULTRSTATUS=10kΩ,RILIM_HI=20kΩ,RLM_LO=80.6kΩ.Positivecurrentsareintopins.Typicalvaluesareat25°C.AllvoltagesarewithrespecttoGND.TESTPOWEROnTJ=25°C,IOUT=2–40°C≤TJ≤85°C,IOUT=2–40°C≤TJ≤125°C,IOUT=2OUTvoltageriseVIN=5V,CL=1µF,RL=100Ω(seeFigure23andFigure24)1OUTvoltagefallOUTvoltageturn-onVIN=5V,CL=1µF,RL=100Ω(seeFigure23andFigure25) OUTvoltageturn-off VOUT=5.5V,VN=VEN=0V,–40≤TJ≤Measure2OUTΩLongOUTdischargeholdTimeVOUT<0.7V(seeFigure2sShortOUTdischargeholdTimeVOUT<0.7V(seeFigureEN,ILIMSEL,CTL1,CTL2,CTL3Inputpinrisinglogicthreshold1VInputpinfallinglogicthresholdVInputPinvoltage=0Vor5.5ILIMSELCURRENTOUTshortcircuitcurrentVILIM_SEL=0V,RILIM_LO=210VILIM_SEL=0V,RILIM_LO=80.6VILIM_SEL=0V,RILIM_LO=22.1VILIM_SEL=VIN,RILIM_HI=20VILIM_SEL=VIN,RILIM_HI=16.9ResponsetimetoOUTshortVIN=5.0V,R=0.1Ω,leadlength=2inches(seeFigure27)SUPPLY DisabledINsupplyVEN=0V,VOUT=0V,–40≤TJ≤ EnabledINsupplyVCTL1=VCTL2=VN,VCTL3=0V,VLM_SEL=0VCTL1=VCTL2=VCTL3=VIN,VILIM_SEL=0VCTL1=VCTL2=VN,VCTL3=0V,VLM_SEL=VCTL1=VCTL2=VN,VCTL3=VIN,VILIM_SEL=VCTL1=0V,VCTL2=VCTL3=Pulse-testingtechniquesmaintainjunctiontemperatureclosetoambienttemperature.ThermaleffectsmustbetakenintoaccountTheseparametersareprovidedforreferenceonlyanddonotconstitutepartofTI'spublisheddevicespecificationsforpurposesofTI'sproductwarranty.Unlessotherwisenoted:–40≤TJ≤125°C,4.5V≤VIN≤5.5V,VEN=VN,VILIM_SEL=VN,VCTL1=VCTL2=VCTL3=VN.RFAULTRSTATUS=10kΩ,RILIM_HI=20kΩ,RLM_LO=80.6kΩ.Positivecurrentsareintopins.Typicalvaluesareat25°C.AllvoltagesarewithrespecttoGND.TESTINrisingUVLOthresholdVOutputlowIFAULT=1VFAULT=5.51OvercurrentFAULTrisingandfallingdeglitch5OutputlowISTATUS=1VSTATUS=5.51ThermalshutdownTheseparametersareprovidedforreferenceonlyanddonotconstitutepartofTI'spublisheddevicespecificationsforpurposesofTI'sproductwarranty.Unlessotherwisenoted:–40≤TJ≤125°C,4.5V≤VIN≤5.5V,VEN=VN,VILIM_SEL=VN,VCTL1=VCTL2=VCTL3=VN.RFAULTRSTATUS=10kΩ,RILIM_HI=20kΩ,RLM_LO=80.6kΩ,Positivecurrentsareintopins.Typicalvaluesareat25°C.AllvoltagesarewithrespecttoGND.TEST DP/DMswitchVDP/DM_OUT=0V,IDP/DM_IN=3024ΩVDP/DM_OUT=2.4V,IDP/DM_IN=–1536SwitchmismatchbetweenDP/DMchannelsVDP/DM_OUT=0V,IDP/DM_IN=30ΩVDP/DM_OUT=2.4V,IDP/DM_IN=–15VEN=0V,VDP/DM_IN=0.3V,Vac=0.6Vpk-f=13DP/DMswitchon-stateVDP/DM_N=0.3V,Vac=0.6Vpk-pk,f=1VEN=0V,f=250On-statecrosschannelf=250VEN=0V,VDP/DM_IN=3.6V,VDP/DM_OUT=0measureBandwidth(–3RL=50Skewbetweenoppositetransitionsofthesameport(tPHL–tPLH) inserieswiththeparasiticcapacitancetoGNDistypically250 inserieswiththeparasiticcapacitancetoGNDistypically150TheseparametersareprovidedforreferenceonlyanddonotconstitutepartofTI'spublisheddevicespecificationsforpurposesofTI'sproductwarranty.Unlessotherwisenoted:–40≤TJ≤125°C,4.5V≤VIN≤5.5V,VEN=VN,VILIM_SEL=VN,VCTL1=0V,VCTL2=VCTL3=RFAULT=RSTATUS=10kΩ,RILIM_HI=20kΩ,RLM_LO=80.6kΩ,Positivecurrentsareintopins.Typicalvaluesareat25°C.AllvoltagesarewithrespecttoGND.TEST VCTL1=VIN,VCTL2=VCTL3=0shortingΩ1.2VVDP_INDivider1output2VDM_INDivider1outputVDP_INoutput8DM_INoutput8IOUT=1DP_INDivider2outputVDM_INDivider2output2VDP_INoutput8DM_INoutput8VCTL1=VCTL2=VCTL3= DM_INCDPoutputVDP_N=0.6–250µA<IDM_IN<0V DP_INrisinglowerwindowthresholdforVDM_SRCactivationV DP_INrisingupperwindowthresholdforVDM_SRCde-activation V DP_INsinkVDP_N=0.6LOADDETECT–NONPOWERVCTL1=VCTL2=VCTL3= IOUTrisingloaddetectcurrent LoaddetectsetLoaddetectreset3sLOADDETECT–POWERVCTL1=VCTL2=0V,VCTL3= PowerwakeshortcircuitcurrentIOUTfallingpowerwakeresetcurrentdetectionthresholdResetcurrent5PowerwakeresetsTheseparametersareprovidedforreferenceonlyanddonotconstitutepartofTI'spublisheddevicespecificationsforpurposesofTI'sproductwarranty.DEVICELLLL232349

DMINDPINPIN6ITheCTLpinsarelogic-levelinputsusedtocontrolthechargingmodeandthesignalswitches(seeTable3).ThesepinstiedirectlytoINorGNDwithoutapulluporpulldownresistor.7I8ID–datalinetodownstream2D–datalinetoUSBhostD+datalinetodownstream3D+datalinetoUSBhost5IENisthelogic-levelinputforturningonandoffthepowerswitchandthesignalswitches.LogiclowturnsoffthesignalandpowerswitchesandholdsOUTindischarge.ENtiesdirectlytoINorGNDwithoutapulluporpulldownresistor.OThispinistheactive-lowopen-drainoutputandisassertedduringovertemperatureorcurrent-limitPGroundIThispinisanexternalresistorconnectionusedtosetthehighcurrent-limitIThispinisanexternalresistorconnectionusedtosetthelowcurrent-limitthresholdandtheloaddetectioncurrentthreshold.AresistortoILIM_LOisoptional;seeCurrent-LimitSettings.4IThispinisthelogic-levelinputsignalusedtocontrolthechargingmode,currentlimitthreshold,andloaddetection(seeTable3).ILIM_SELtiesdirectlytoINorGNDwithoutapulluporpulldownresistor.1PINistheinputvoltageandsupplyvoltage.Connectthispintoa0.1-μForgreaterceramiccapacitorfromINtoGNDandasclosetothedeviceaspossible.P––ThePowerPADisinternallyconnectedtoGNDandisusedtoheat-sinkthedevicetothecircuitboardtraces.ConnectthePowerPADtotheGNDne.9OThispinistheactive-lowopen-drainoutputandisassertedinloaddetection(1)G=Ground,I=Input,O=Output,P=TPS2546-Q1FUNCTIONALBLOCKDisable+LoadCurrent(fallingLoadCurrent8-ms

TYPICALPOWERSWITCHON ReverseLeakageCurrent−40−25−10 203550658095110JunctionTemperatureFigure

0−40−25−10 203550658095110JunctionTemperatureFigureDISCHARGE

RILIM_LORILIM_LO=210kRILIM_LO=80.6kRILIM_HI=20kRILIM_HI=16.9kOUTShortCircuitCurrentLimitOUTOUT

VINVIN=4.5VVIN=5VVIN=5.5V−40−25−10 203550658095110JunctionTemperatureFigure

−40−25−10 203550658095110JunctionTemperatureFigure

VINVIN=4.5VVIN=5VVIN=5.5VVILIMSEL=0VDisabledINSupplyDisabledINSupplyCurrentEnabledINSupplyCurrent 0 JunctionTemperatureFigure

−40−25−10 203550658095110JunctionTemperatureFigure

VINVIN=4.5VVIN=5VVIN=5.5VDeviceconfiguredforDCPEnabledINSupplyEnabledINSupplyCurrentEnabledINSupplyCurrent −40−25−10 203550658095110JunctionTemperatureFigure

−40−25−10 203550658095110JunctionTemperatureFigure

STATUSANDFAULTOUTPUTLOW SINKING TJTJ=−40°CTJ=25°CTJ=125°CVIN=4.5OutputLowOutputLowVoltage

0 SinkingCurrent

Figure Figure XTALKXTALK-ONStateCross-ChannelIsolation-OIRROIRR-OffStateIsolation- 0 Figure11.

Figure12.EYEDIAGRAM PLIANCETEST EYEDIAGRAM PLIANCETEST(withno (withdata0

DifferentialDifferentialSignal0

0.20.40.6 1.21.41.6

0.20.40.6 1.21.41.6 Time Figure Figure

IOUTRISINGLOAD-DETECT LOADDETECTSET- RILIM_LORILIM_LO=80.6IOS-OUTShortCircuitCurrentLimitILD-IOUTRisingLoadDetectThreshold

LoadLoadDetectSetTimeCurrentCurrent

−40−25−10 20355065JunctionTemperatureFigure

95110

−40−25−10 203550658095110JunctionTemperatureFigure RLOAD=5ΩRLOAD=5ΩPowerPowerWakeCurrentLimit25−40−25−10 203550658095110JunctionTemperatureFigure

500

t-Time-1Figure

RILMLO=80.6RILMLO=80.625

RLOAD=5ΩRLOAD=5Ω5500

--Time-1t-Time-2FigureFigure

500 DEVICEENABLEDINTOSHORTCIRCUIT— SHORTCIRCUITTOFULLLOAD5

RILMHIRILMHI=20RILIMHI=20kΩRLOAD=5Ω5

21

2t-Time-5 t-Time-2 Figure Figure

Figure23.OUTRiseandFallTest Figure24.Power-OnandPower-Off50505010 tDCHG0VFigure25.EnableTiming,Active-High Figure26.OUT-DischargeDuringModeFigure27.OutputShort-CircuitThefollowingoverviewreferencesvariousindustrystandards.TI mendstoconsultthemostup-to-datestandardstoensurethemostrecentandaccurateinformation.Rechargeableportableequipmentrequiresanexternalpowersourcetochargebatteries.USBportsareaconvenientlocationforchargingbecauseofanavailable5-Vpowersource.Universallyacceptedstandardsarerequiredtoensurehostand-sidedevicesoperatetogetherinasystemtoensurepower-managementrequirementsaremet.Traditionally,hostportsfollowingtheUSB-2.0specificationmustprovideatleast500mAtodownstream-sidedevices.BecausemultipleUSBdevicescanbeattachedtoasingleUSBportthroughabus-poweredhub,the-sidedevicesetsthepowerallotmentfromthehosttoensurethetotalcurrentdrawdoesnotexceed500mA.Ingeneral,eachUSBdeviceisgranted100mAandcanrequestmorecurrentin100-mAunitstepsupto500mA.Thehostgrantsordeniesadditionalcurrentbasedontheavailablecurrent.AUSB-3.0hostportnotonlyprovideshigherdataratethanaUSB-2.0portbutalsoraisestheunitloadfrom100mAto150mA.Providingaminimumcurrentof900mAtodownstream-sidedevicesisrequired.Additionally,thesuccessofUSBhasmadethemicro-USBandmini-USBconnectorsapopularchoiceforwall-adaptercables.Amicro-USBormini-USBallowsaportabledevicetochargefrombothawalladapterandUSBportwithonlyoneconnector.AsUSBcharginghasgainedpopularity,the500-mAminimumdefinedbyUSB2.0,or900mAforUSB3.0,has einsufficientformanyhandsetand almediayers,whichrequireahigherchargingrate.Walladaptersprovidemuchmorecurrentthan500or900mA.Severalnewstandardshavebeenintroduceddefiningprotocolhandshakingmethodsthatallowhostand devicestoacknowledgeanddrawadditionalcurrentbeyondthe500-mAand900-mAminimumdefinedbyUSB2.0andUSB3.0,respectively,whilestillusingasinglemicro-USBormini-USBinputconnector.TheTPS2546-Q1devicesupportsfourofthe monUSB-chargingschemesfoundinpopularhand-heldmediaandcellulardevices.USBBatteryChargingSpecificationmunicationsIndustryStandardYD/T1591-2009Divider1.2VTheYD/T1591-2009standardisasubsetoftheBC1.2specificationandissupportedbyamajorityofdevicesthatimplementUSBchanging.Dividerand1.2-Vchargingschemesaresupportedindevicesfromspecificandpopulardevicemakers.TheBC1.2specificationincludesthreedifferentportStandarddownstreamportChargingdownstreamportDedicatedchargingportBC1.2definesachargingportasadownstream-facingUSBportthatprovidespowerforchargingportableequipment.Underthisdefinition,CDPandDCParedefinedaschargingports.Table1liststhedifferencesbetweentheseportTable1.OperatingPORTSUPPORT2.0DRAWBYPORTABLEDEVICE(A)SDP(USBSDP(USBStandardDownstreamPort(SDP)—USB2.0andUSBAnSDPisatraditionalUSBportthatfollowsUSB2.0andUSB3.0protocol.AnSDPsaminimumof500and900-mAperport.USB2.0andUSB3.0communicationsissupported,andthehostcontrollermustbeactivetoallowcharging.TheTPS2546-Q1devicesupportsSDPmodeinsystem-powerstateS0whenthesystemiscompleypoweredONandfullyoperational.Formoredetailsonthecontrolpin(CTL1–CTL3)settingsusedtoprogramthisstate,seeTable3.ACDPisaUSBportthatfollowsUSBBC1.2andsaminimumof1.5Aperport.ACDPprovidespowerandmeetstheUSB-2.0requirementsfordeviceenumeration.USB-2.0communicationissupported,andthehostcontrollermustbeactivetoallowcharging.ThedifferencebetweenCDPandSDPisthehost-chargehandshakinglogicthatidentifiesthisportasaCDP.ACDPisidentifiablebyacompliantBC1.2 deviceandallowsforadditionalcurrentdrawbythedevice.TheCDPhand-shakingprocessoccursintwosteps.Duringsteponetheportableequipmentoutputsanominal0.6-VoutputontheD+lineandreadsthevoltageinputontheD–line.TheportabledevicedetectstheconnectiontoanSDPifthevoltageislessthanthenominaldatadetectvoltageof0.3V.TheportabledevicedetectstheconnectiontoaCDPiftheD–voltageisgreaterthanthenominaldatadetectvoltageof0.3Vandoptionallylessthan0.8V.ThesecondstepisnecessaryforportableequipmenttodetermineiftheequipmentisconnectedtoaCDPoraDCP.Theportabledeviceoutputsanominal0.6-VoutputontheD–lineandreadsthevoltageinputontheD+line.TheportabledeviceconcludestheequipmentisconnectedtoaCDPifthedatalinebeingreadremainslessthanthenominaldatadetectvoltageof0.3V.TheportabledeviceconcludesitisconnectedtoaDCPifthedatalinebeingreadisgreaterthanthenominaldatadetectvoltageof0.3V.TheTPS2546-Q1devicesupportsCDPmodeinsystem-powerstateS0whenthesystemiscompleypoweredONandfullyoperational.Formoredetailsoncontrolpin(CTL1-CTL3)settingsusedtoprogramthisstateseeTable3.DedicatedChargingPortADCPonlyprovidespoweranddoesnotsupportdataconnectiontoanupstreamport.Asshowninthefollowingsections,aDCPisidentifiedbytheelectricalcharacteristicsofthedatalines.TheTPS2546-Q1deviceemulatesDCPintwochargingstates:DCP dandDCPAuto(seeFigure32).InDCP-dstatethedevicesupportsoneofthetwoDCPchargingschemes,eitherDivider1orShorted.IntheDCP-Autostate,thedevicecharge-detectionstatemachineisactivatedtoselectivelyimplementchargingschemesinvolvedwiththeDivider1,Divider2,and1.2VMode.TheShortedDCPmodecomplieswithBC1.2andmunicationsIndustryStandardYD/T1591-2009,whiletheDivider1,Divider2,and1.2VModeemployedtochargedevicesthatdonotcomplywiththeBC1.2DCPDCPBC1.2andYD/T1591-BothstandardsdefinethattheD+andD–datalinesmustbeshortedtogetherwitha umseriesimpedanceof200Ω,asshowninFigure28.GUSB<200Figure28.DCPSupportingBC1.2andUSB<200DCPDivider-ChargingThedevicesupportstwodividerchargingschemes,Divider1andDivider2,asshowninFigure29andFigure30,respectively.IntheDivider1chargingschemethedeviceapplies2Vand2.7VtoD+andD–datalines,respectively,whichisreversedinDivider2mode.GUSB<200Figure29.DCPUSB<200GUSB<200Figure30.DCPUSB<200DCP1.2VChargingTheDCP1.2Vchargingschemeisusedbysomehand-helddevicestoenablefastchargingat2A.TheTPS2546-Q1devicesupportsthisschemeinDCP-AutostatebeforethedeviceentersBC1.2Shortedstate.Tosimulatethischargingscheme,theD+andD–linesareshortedandpulledupto1.2Vforafixedduration.ThenthedevicemovestoDCPShortedmodeasdefinedintheBC1.2specificationandasshowninFigure31GUSB<200Figure31.DCP1.2-VUSB<200DCPAutoAspreviouslydiscussed,theTPS2546-Q1deviceintegratesanauto-detectstatemachinethatsupportsalltheDCPchargingschemes.Theauto-detectstatemachinestartsintheDivider1scheme,however,ifaBC1.2orYD/T1591-2009compliantdeviceisattached,theTPS2546-Q1respondsbydischargingOUT,turningthepowerswitchbackonandoperatingin1.2VModebrieflybeforeenteringBC1.2DCPmode.Thentheauto-detectstatemachinestaysinthatmodeuntilthedevicereleasesthedataline,inwhichcasetheauto-detectstatemachinegoesbacktotheDivider1scheme.Whena pliantdeviceisattached,theTPS2546-Q1devicestaysintheDivider1state.Also,theTPS2546-Q1deviceautomaticallyswitchesbetweentheDivider1andDivider2schemesbasedonthechargingcurrentdrawnbytheconnecteddevice.Initially,thedevicesetsthedatalinestotheDivider1scheme.Ifachargingcurrentofgreaterthan750mAismeasuredbytheTPS2546-Q1device,theauto-detectstatemachineswitchestotheDivider2scheme.AfterswitchingtotheDivider2scheme,theauto-detectstatemachineteststheperipheraldevicetoensurethatthedevicecontinuestochargeatahighcurrent.Iftheperipheraldevicecontinuestocharge,thentheauto-detectstatemachinestaysinDivider2scheme,otherwisetheauto-detectstatemachinerevertstotheDivider1scheme.ToUSB2.0

BC1.2BC1.2BC1.2DCP1.2-VDCP

From Figure32.DCPAuto dShortedand dInthismodethedeviceispermanentlysettooneoftheDCPschemes(BC1.2,YD/T1591-2009,orDivider1)ascommandedbythecontrolpinsettingperTable3.High-BandwidthDataLineTheTPS2546-Q1devicepassestheD+andD–datalinesthroughthedevicetoenablemonitoringandhandshakingwhilesupportingthechargingoperation.Awidebandwidthsignalswitchallowsdatatopassthroughthedevicewithoutcorruptingsignalintegrity.ThedatalineswitchesareturnedoninanyoftheCDPorSDPoperatingmodes.TheENinputmustbeatlogichighforthedatalineswitchestobeenabled.WhileinCDPmode,thedataswitchesareON,evenduringCDPThedatalineswitchesareOFFifENorallCTLpinsareheldlow,orifinDCPmode.Theswitchesarenotautomaticallyturnedoffifthepowerswitch(INtoOUT)isinThedataswitchesareonlyforUSB-2.0differentialpair.InthecaseofaUSB-3.0host,thesuper-speeddifferentialpairsmustberouteddirectlytotheUSBconnectorwithoutpassingthroughtheTPS2546-Q1device.DataswitchesareOFFduringOUT(VBUS)DeviceDCPDCPSHORT/DCPdDivider1)DCPDCPSHT/DCPDCPDCPSHORT/DCPdDivider1)DCPDCPSHT/DCPDCPAutoDivider1/Divider2)Or OrNOTE:AllshadedboxesaredevicechargingTable2liststheCTLsettingscorrespondingtoflowlineFigure33.TPS2546-Q1ChargingTable2.DeviceControlFlowLineDCH000X1111SDP2(Nodischargetoorfrom1110SDP1(Dischargetoandfromanychargingstateincluding110X010X100XDCP/101X011X001XOutputToallowachargingporttorenegotiatecurrentwithaportabledevice,theTPS2546-Q1deviceusestheOUTdischargefunction.ThedeviceproceedsbyturningoffthepowerswitchwhiledischargingOUT.ThedevicethenturnsonthepowerswitchagaintoreasserttheOUTvoltage.Thisdischargefunctionisautomaticallyapplied,asshowninFigure33.Therearetwodischargetimes,tDCHG_LandtDCHG_S.tDCHG_LisfromSDP1/SDP2/CDPtoDCP_Auto,andtDCHG_SisfromDCP_AutotoSDP1/SDP2/CDP.Wake-On-USBFeature(MouseandKeyboardWakeUSB-2.0BackgroundThedatalinesoftheTPS2546-Q1deviceinterfacewithUSB-2.0devices.USB2.0definesthreetypesofdevicesaccordingtodatarate.ThefollowinglistsoutlinethethreedevicesandthecharacteristicsrelevanttoTPS2546-Q1wake-on-USBoperation.Low-speedUSB1.5ExamplesincludewiredmiceandDoesnotincludedevicesthatrequirebatteryAllsignalingperformedat2-Vand0.8-VhighandlowlogicD–goeshightosignalconnectandwhencedintoD–goeshighwhennottransmittingdataFull-speedUSB12Examplesincludewirelessmiceandkeyboards,legacyphones,andmusicIncludessomelegacydevicesthatrequirebatteryAllsignalingperformedat2-Vand0.8-VhighandlowlogicD+goeshightosignalconnectandwhencedintoD+goeshighwhennottransmittingdataHigh-speedUSB480Examplesincludetablets,phones,andmusicIncludesmanydevicesthatrequirebatteryConnectandsuspendsignalingperformedat2-Vand0.8-VhighandlowlogicDatapacketsignalingperformedatlogiclevelsbelow0.8D+goeshightosignalconnectandwhencedintosuspend(sameasafull-speedD+andD–golowwhennottransmittingdataWake-on-USBistheabilityofawake-configuredUSBdevicetowakeacomputersystemfromtheS3sleep-stateofthedevicebacktotheS0workingstate.Wake-on-USBrequiresthedatalinestoconnecttothesystemUSBhostbeforethesystemiscedintoS3sleepstate.Wake-on-USBalsorequiresthatthelinesremaincontinuouslyconnecteduntiltheyareusedtowakethesystem.TheTPS2546-Q1devicesupportslow-speedandhigh-speedhuman-interface-device(HID,suchasmouseorkeyboard)wakefunctions.TherearetwoscenariosunderwhichtheTPS2546-Q1devicesupportswake-on-mouse.ThefollowinglistshowsthespecificCTLpinchangesthattheTPS2546-Q1deviceoverrides.TheinformationispresentedasCTL1,CTL2,andCTL3.TheILIM_SELpinysnorole.111(CDP/SDP2)to011(DCP-010(SDP1)to011(DCP-The110(SDP1)-to-011(DCP-Auto)transitionisnotsupportedbecausethetransitioninvolveschangestotwoCTLpins.DependingonwhichCTLpinchangesfirst,thedevicedetectseitheratemporary111or010command.The010commandissafebutthe111commandcausesanOUTdischargeastheTPS2546-Q1deviceinsteadproceedstothe111state.USBSlow-SpeedandFull-SpeedDeviceTheTPS2546-Q1devicecandetectlow-speed(LS)orfull-speed(FS)deviceattaentwhenitisinSDPorCDPmode.AccordingtoUSBspecificationwhennodeviceisattached,theD+andD–linesareneargroundlevel.Whenalow-speedcompliantdeviceisattachedtothechargingportoftheTPS2546-Q1device,theD–lineispulledhighintheidlestate(mouseorkeyboardisnotactivated).However,whenanFSdeviceisattachedtheoppositeoccurs(D+ispulledhighandD–remainsatgroundlevel).TheTPS2546-Q1devicemonitorsbothD+andD–lineswhiletheCTL-pinsettingsareinCDPorSDPmodetodetectLS-HIDorFS-HIDdeviceattaent.TosupportHIDsleepwake,theTPS2546-Q1devicemustfirstdeterminethatitisattachedtoanLSorFSdevicewhenthesystemisinS0powerstate.TheTPS2546-Q1devicedetectsanLSorFSdeviceaspreviouslydescribed.WhilethesupportofanLS-HIDwakeisstraightforward,supportingFS-HIDrequiresmakingadistinctionbetweenanFSandahigh-speed(HS)device.ThisdistinctionisimportantbecauseaHSdevicealwaysbeginsasanFSdevice(bya1.5-kΩpullupresistoronD+).Thenegotiationforhighspeedthenmakesthedistinctionwherebythe1.5-kΩpullupresistorisremoved.TheTPS2546-Q1devicehandlesthedistinctionbetweenanFSandHSdeviceatconnectbymemorizingiftheD+linegoeslowafterconnect.AHSdeviceafterconnectalwaysundergoesnegotiationforHSwhichrequiresthe1.5-kΩresistorpulluponD+toberemoved.TomemorizeanFSdevice,theTPS2546-Q1requirestheperipheraldevicetoremainconnectedforatleast60secondswhilethesystemisinS0modebeforecingtheperipheraldeviceinsleeporS3mode.ThisrequirementdoesnotapplyforanLSIfthesystementerssleepmodeearlierthanthe60-secondwindow,anFSdevicemaynotberecognizedandthereforecouldfailtowakethesystemfromS3.NoCTL-PinTimingRequirementAfterWakeEventandTransitionfromS3toUnliketheTPS2543device,thereisnoCTL-pintimingrequirementfortheTPS2546-Q1devicewhenthewake-configuredUSBdevicewakesthesystemfromS3backtoS0.TheTPS2543devicerequirestheCTLpinstotransitionfromtheDCP-AutosettingbacktotheSDPorCDPsettingwithin64msoftheattachedUSBdevicesignalingawakeevent(suchasamouseclickorkeyboardkeypress).ThistimingconditionisnotafeatureoftheTPS2546-Q1device.DeviceTruthTableThedevicetruthtable(TT)listsallvalidbiascombinationsforthethreecontrolpins(CTL1throughCTL3),theILIM_SELpin,andthecorrespondingchargingmodeofeachpin.TheTTpurposelydoesnotmatchchargingmodesoftheTPS2546-Q1devicewithglobalpowerstates(S0-S5)asthedeviceisneutraltosystempowerstates.TheTPS2546-Q1devicemonitorstheCTLinputsandtransitionstowhicheverchargingstateitiscommandedtogoto(exceptwhenaLS-HIDorFS-HIDdeviceisdetected).Forexample,ifsleepchargingisdesiredwhenthesystemisinastandbyorhibernatestate,thentheusermustsettheCTLpinsoftheTPS2546-Q1devicetocorrespondtotheDCP_AutochargingmodeperTable3.However,whenthesystemreentersoperationmode,thentheusermustsetcontrolpinstocorrespondtoSDPorCDPmodeandsoon.Table3.TruthSTATUS(Active0000OUTheld00010010Datalines0011DCPloadDatalinesdisconnectedandLoadDetectfunctionactive0100Datalines01010110Datalines0111DCPloadDatalinesdisconnectedandLoadDetectfunctionactive1000DevicedtostayinDCPBC1.2charging10011010DCP/DevicedtostayinDCPDivider1charging1011DCP/1100Datalines110111101111CDPloadDatalinesconnectedandLoaddetectTheTPS2546-Q1current-limit(IOS)automaticallyswitchesbetweenIOS_PWandthevaluesetbyILIM_HIaccordingtotheLoadDetection–PowerWakefunctionality.TheDCPloadpresent ernedbytheLoadDetection–PowerWakeTheDCPloadpresent ernedbytheLoadD