SC11210

,rlll \u7 SItrRRASEMICOND{JCTl]R TELECOMMUNICATIOANPSPLICATIONNOTE2 llsingtheSCll2l0/SCll2ll CalleIr.D.Circuit Purposeol Applicationilote sequencdeescriptioAnls. og, eneralC I Dm e s s a g eosv e rt h en o r m a l Thepurposoefthisapplicationnoteis requiremenfotsrCIDimplementationrasngeoflevelesxpecteindtheCID toprovidaenintroductitoontheuseof specifitcotheSierrCa allelrDchipwill environment. SienaSemiconductoCra'sllelrdentifi- bepresented. cation(ClD)decodingcircuit,the SC1 210/SC2111'1.Thisproduchtas TheCalleNr umbeDr eliver(yCNDo)r AisgsheonwernianClFIDigsuyrse'lteamnbdlgoecnkdeiaragslryasm- beendesignetdo provide ngineersCallelrdentificatSioenrviciesa new temtimingshownin Figur2e. An witha highlyintegratesdolutiotnodecodinganddetectintgheFSKmodem featurtehathasbeenintroduceads partof theGeneraSlwitcheTdele- oupsetodtoc"owuapRkleueinrpg'Dtheepterocctieocsinrscfouurnitsc- signalussedin theCallelrdentifica-phoneNetwor(kGSTNT)h. eservicetionandproviddeatastreamloading tionService. allowcsalledpartietsoidentiftyhecall- totheTipandRingincominligneS. ome ingpartyn'sumber. delay(typical5ly00Mseci)sprovided A generaol verviewoi thefunctional betweethneendof theRingSignal andperformanrceequiremeonftCsID Electronciicrcuitrisyprovidetdhat andthebeginninogftheDataStream. servicfeirswt illbeoresentefodllowed detectasnddecodedsatathathas TheSierrCaIDchipprovidedsemodu- by descriptivaendapplicatioinfor- beentransmittebdytheCentraOl ffice lated ataout olhemicroprocesso...