标签: ds2141

摘要：DS2141A可以用于创建一个DS/ESF通道服务单元。本应用笔记中有足够的信息，就如何使用这种设备DS2141A创建此通道服务单元和原理图。Maxim>AppNotes>COMMUNICATIONSCIRCUITSTELECOMKeywords:DS2141,DS2141A,DS,ESF,channelserviceunitMay08,2001APPLICATIONNOTE328DS2141ACreatingaDS/ESFChannelServiceUnitAbstract:DS2141AcanbeusedforcreatingaDS/ESFChannelServiceUnit.ThisapplicationnotehastheadequateinformationandschematiconhowtousethisdeviceDS2141AtocreatethisChannelServiceUnit.Figure1.Notes:1.Thisapplicationuses"looped"timing(i.e.,RCLKistiedtoTCLK)2.MHzclocksourceisusedasatransmitclockifnosignalexistsonthereceiveside;iftheDS2291declaresacarrierloss,thenthesourceoftheTCLKwillbeswitchedfromtherecoveredclocktothelocallyaccurate1.544MHzsou……