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ISD4004voicechipvoicestopinthebrowserapplicationAbstract:ISD4004voicechipseriesaretheUnitedStatesISDintroducedproducts,withmultiplerepeatplayback,storagetime,whenusedwithouttheexpansionofmemory,peripheralcircuitsrequiredforfeaturessuchaseasy.IntroducedinthevoicechipISD4004stopdeviceinapracticalapplication,andexplainsitsfunctionanduseofmethods,thusenablingreaderstovoicechipISD4004seriesusetohaveapreliminaryunderstanding.Keywords:ISD4004single-chipvoicestopbrowserISD4004voicechipISDarefromtheUnitedStateslaunchedthenewproducts.Onthevoicechippindescriptionoftheinternalcircuit,etc.,itiseasyintheISDchipinformationprovidedbythecompanyfound,Iwillnotdescribetoomuch,onlyabriefintroductiontoitscharacteristicsmakeone.Withordinaryrecording/playbackchipcompared,ISD4004hasthefollowingcharacteristics:First,therecorddoesnotsoundparagraphlength,andsoundrecordingsdonotneedA/Dconversionandcompression;Secondly,asafastflashstoragemedium,thatis,withoutpowersupplydatacanbestoredforupto100years,morethan10,000duplicaterecords;Inaddition,ISD4004hasrecordedalongtime(upto16minutes,thepaperusedforthe8-minuteISD4004voicechip)advantages;Finally,ISD4004hasrequiredthedevelopmentandapplicationofperipheralcircuitsoftheadvantagesofeasy,Thisisevidentfromtheintroductionofthisarticlereportedthatstationsinthevoicebrowsercanbeofpracticalapplicationexperience.SoundStation1hardwarecircuitdesignCurrentlyonthemarketstoptheflowofvoice,andmostlynotusedISD4004seriesofchips,whichwereintroducednotlongago,aswellasitshighprice-related.However,withthenumberofapplications,aswellasISD4004pricedrop,coupledwiththeISD4004seriesofchipshavingtheadvantage,itisbelievedthatthevoicebrowsertousestopISD4004seriesvoicechipsareentirelyfeasible.Idesignedthedeviceshardwarecircuit,andaBoarddebug,andachievedsatisfactoryresults.Figure1stophardwarecircuitconnectiondiagramThisarticlediscussesvoicestopdeviceisinstalledinthecarmeanstheplaybackcircuit,doesnotincludetherecordingcircuit.Inpracticalapplication,therecordingcircuitiscompletedstopthecontentsoftherecording,andrecordedcontentisstoredintothevoicechip.Inthispaper,combinedwiththeISD4004playbackcircuitISD4004introducetheuseofatypicalapplication.Thisarticlediscussesthebrowserstopmaincircuitmainlybysingle-chipmicrocomputer89C52andconstituteISD4004.Thissystemismainlydividedintothreeparts:single-chipcontroloftheplaybackpartanddisplaypart.DisplaycircuitusedbyP3.0,P3.1tocontrolthetwoparagraph7ofthestaticdigitaltubedisplay,andIshallnotdetail;controlpartconstitutedmainlybythe89C52single-chipthatcontainsthenecessarykeyscircuit,resetcircuitandperipheralcircuits,suchaswatchdogcircuit;playbackfromISD4004constitutesomeofthemajor,includingsupportingthePSAcircuit,poweramplifiercircuit.FromFigure1canbeseen89C52andfewerconnectionsbetweentheISD4004.MCUP1.0P1.3pinaccessbuttons,controldevicesstopthecourseoftheirworkwhetherornotreleasethecontentsoftoneplayback;P1.6accesstheISD4004chipselectpin/SS,controlwhetherISD4004strobe;ISD4004thenP1.7serialinputpinMOSI,readfromthepintotheaddressofplayback;P3.0andP3.1tocontroltheexternaldisplaycircuit,inanewspaper,thecourseoftheirworkstationdevicedisplaysthecurrentnumberofstations;P3.2andP3.3,respectively,thenISD4004-pinserialclockSCLKandinterruptpin/INT.ISD4004chipsneededtoconnectaudiosignalsareoutputpinsAUDOUT,thepinthroughafiltercapacitorconnectedwiththespeaker;AMCAPtoautomaticallymuteend,throughtheuseofonegroundedcapacitor.Inaddition,becauseoftheworkofISD4004voltage3V,whilethesingle-chipsupplyvoltagerequiredforthe5V,thereforebenecessarytoadopt3VvoltagetransformercircuitforuseISD4004.2SoftwareDesignElectriccircuits,thefirsttocompletetheinitializationprocedure,andthenquerythestatusbuttontoentersystemstandbymode.Ifyouhavepressthebutton,thenturntotheimplementationofthekeypointtotheworkprocedures.Keysincludingtheplaybackbuttonandstopbutton,plus1key,minusonekeyandspecialkeywords.Inthestandbymode,iftheplaybackbuttonispressedthefirsttime,theprogramwillbethefirsttojudgeareorgobackto(thegeneralpathofthebusarenotonlygofurtherback),andthecorrespondingindicatorlightautomaticallyreadoutthefirststopplaybackofthecontent,StationNo.1show.Ifitisnotthefirstpress,thenthefirststationtodeterminethecurrentnumber,andthestationnumberisbasedonaccesstostoredcontentplaybackatthestationandthefirstaddress;thencallsubroutineplayback,readaccesstothesiteinfrontofthecontentsofthefirstplaybackAddresstobeginplayback.Eachsentenceafterplayback,ISD4004interruptpin(25feet)willbeautomaticallysenttoonelow-levelsignals.Inhardwaredesign,thepinandtheMCUP3.3connection,sowillcauseaninterruptionintheinterruptionsubroutine,thereisadisruptionRecordthenumberofcounters,whichdeterminewhentheendofthecurrentStation1,StationPlustogetherRefreshdisplay.Addonebuttonpress,theproceduresforthenextshiftplaybackcontent;minusonekeypress,aftertheprocessisturnedonplaybackthecontentofonestation,thecorrespondingstationnumberdisplaywillalsorefresh;speciallanguagekeypressaftertheproceduretotheimplementationofthespeciallanguageplayback(forexample,turningPleasenoteandotherstatements);stopkeypress,wouldsuspendthecurrentplaybackstatus.ISD4004inordertofacilitatethereadersunderstandingoftheapplication,thispapersomeoftheprocedures.Partoftheproceduretocompletethemainplaybackoperation,togettheaddressofthecontentplaybacktotheISD4004,thecompletionofplayback.PLAYACALLPOWERUPsACALLDELAY25fNolaterthan25msCLRP1.64MOVPLAY2YMOVA8ACALLSENDinecalltosendtheaddressMOVAtACALLSENDISD4004语音芯片在语音报站器中的应用摘要:语音系列芯片是美国公司推出的产品,具有可多次重复录放、存储时间长、使用时不需扩充存储器、所需外围电路简单等特点。介绍了芯片在语音报站器中的一个实际应用,并说明了其功能和使用方法,从而使读者对系列语音芯片的使用有个初步的了解。关键词:ISD4004单片机语音报站器语音芯片是由美国公司推出的新产品。关于该语音芯片的引脚说明以及内部电路等,很容易在公司提供的芯片资料中查到,笔者就不进行过多的描述,只简单地对其特点做一介绍。与普通的录音重放芯片相比,具有如下特点:首先,记录声音没有段长度限制,并且声音记录不需要转换和压缩;其次,将快速闪存作为存储介质,无需电源即可保存数据长达年,重复记录次以上;此外,具有记录时间长(可达分钟,本文采用的为分钟的语音芯片)的优点;最后,的开发应用具有所需外围电路简单的优点,这一点从
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