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1、1、状态转换耗时:描述XOSC周期26MHz晶体UDLE到RX,无校准229888.4限IDLE到RX.有校准*210378O9psIDLE到TX/FSTXON(无校推229888.4|jsIDLE到TX/FSTXON有校推-21037809PsIX向RX转换1560215|JBRX向TX转换25096psRX或TX到IDLE,无校准20.1(JSRX或TX到IDLE,有校准T8739721ps手动校准*18739721ps表32状杰转换定时现在配置状态：0x17:MCSM1（0x30）3气*T?SGFF_MODEfTTtj1）。但。）R/W请选样接收到一个数捌也后会发生的情瓦设置4E/据但接
2、收后的卜一一烟u300)|口LE;STXON7X果特在RX模式“kFb(io)ip11)1不徒将RXOFF_MODE设置为TX或FSTXON.同时使用CCA.1:。（jgFF_MODE?r；)0(00)R/Wu精选择发送一个数据包后（TX）会发生的情居莒置.击5一画制期也虹送后岫卜一茯直,IDLE1(01)2(10)3(11)FSTXON保持在TXC开始发送前导）RX0x18:MCSM0(0x18)5;4FS_AUTOCAL1：00(00)R/Wc设置何时进行自动校准0(00)从不进行白动校准（使用SCAL选渡脉冲手动椅准）T(oi)-当肽IDLE转到RX或TTFFSTXON)2(10)1普从
3、RXFTX白动返回IDLE时3(11)当从RX或TX返向IDLE时，H4次自动校准一次2进入TX或RX或返回到IDLE后白动进行核准在一些自动无堆唤例（WOR）前用中.使用设较3（11）能大大减少电流消耗电注意：每次由空闲转换到发送或接受是延时必须超过810us。问题现象：在确认数据端正常工作且发送数据情况下，使用CC1101进行数据接收，过一段时间之后CC1101接收不到数据了。原因及解决方法：这个问题比较诡异，应该是CC1101的芯片设计问题：锁相环漂移，由此造成的频率合成器的接收频率、带宽位置变化。解决该问题的方法也很简单，定期进行频率校准。既可以使用Strobe命令进行手动校准：SCA
4、L,亦可在MCSM0.FS_AUTOCAm为1,然后在程序中设置：从IDLE转到RX或RT自动校准，重新进行频率校准。2、中断设置:6(0*06)发送/接收到同生字时置位，并在数据包的末尾取消置位.在RX模式下,可选地址校验失败或RXFIFO溢出时引脚将取消置位.TX下,在TX模式下，FIFO下溢时引脚将取消置位.7(0*07)接收到CRCOK的数据包时置位.从RXFIFO读取第一个字节时取消置位，故障指示器所用中断具体介绍:3lOCFGx=0x06Thissignalisprobablythemostusefulsignalrelatedtothepackethandlerengine.Th
5、eGDOxpinisassertedwhenasyncwordhasbeensent/received1andde-assertedattheendofthepacket.InRX,thepinwillde-assertwhenaddressfilteringormaximumlengthfilteringleadstoapacketbeingdiscardedoriftheRXFIFOoverflows.InTXhthepinwillde*assertiftheTXFIFOunderflows.XITXwheniocfgx=0x063.1.1 ErrorFreeTX(lOCFGx=0x06)
6、Assumetransmittingthefollowingpacket:0x06,0x01,0x02,0x03,0x04,0x05,0x06.Theradioisconfiguredtousevariablepacketlengthmode(pktctrlo.length_config=1)hCRCinsertionisenabled(pktctrlO.CRCen-1)dandthedatarateis250kbps.Afterthesyncwordistransmitted(1)t9morebytesaresent:1lengthbyte+6payloadbytes+2CRCbytes.T
7、histakes(98)-(1/250000)288us.InFigure1,theGDOxsignalishighforabout292us.Thedifferencebetweenthetheoreticalvalueandthemeasurevalueisduetointernaldelaysinthesignalpath.Theradiowillbeinthestatedeterminedbymcsmi.txoffmodeafterGDOxisde-asserted(2).Figure1.ErrorFreeTX(lOCFGx=0x063.1.2 TXFIFO.UNDERFLOW(IOC
8、FGx=0x06)Assumetransmittingthefollowingpacket:0x03,0x01.0x02.Theradioisconfiguredasdescribedin3.1.1.Sincevariablepacketlengthmodeisused,transmittingthispacketwillmaketheradioentertheTXFIFO_UNDERFLOWstate(thelengthbyteis3,butthereareonlytwobytesinthepayload;0x01and0x02).ThismeansthattheGDOxsignalwill
9、bede-asserted(2)after(38)(1/250000)=96us(1)showssynctransmitted).TheonlywaytogetoutofTXFIFO-UNDERFLOWstateistoissueaSFTXstrobe.ThiswillgettheradiobacktoIDLEstateregardlessofthemcsmi.txoffmodesetting.Figure2.TXFIFO_UNDERFLOW(IOCFGx=0x06)3.2RXwhenIOCFGx=0x06ErrorFreeRX(IOCFGx=0x06)Assumereceivingthepa
10、ckettransmittedin3.1.1.AsseeninFigure3,theGDOxsignalonthereceiver(SYNCRECEIVED/PACKETRECEIVED)isasserted(3)andde-asserted(4)justaftertheGDOxsignalonthetransmitter(SYNCSENT/PACKETSENT)isasserted(1)andde-asserted(2).Theradiowillbeinthestatedeterminedbymcsmi.rxoff_modeafterGDOxisde-asserted.Figure3.Err
11、orFreeRX(IOCFGx=0x06)RXFIFO.OVERFLOW(IOCFGx=0x06)Thetransmittedpacketisstillthesameasin3.1.1,butthereceiverhasbeenconfiguredtousefixedpacketlengthmode(pktctrlo.length_config=0)andthepacketlengthissetto70(pktlen=0x46).Syncwordisreceived(3)immediatelyafterthesyncwordhasbeentransmitted(1).However,whent
12、hepacketitsent(2),thereceivercontinuesinRXstatesinceitisconfiguredtoreceive70bytes.After2.15mstheracioentersRXFIFO_OVERFLOWstate(4).Itonlytakes(648)(1/250000)=2.048mstofilluptheRXFIFO,butduetosomeinternalbuffering,ittakessomeadditionaltimebeforeRXFIFO_OVERFLOWstateisentered.TheonlywaytogetoutofRXFIF
13、O_UNDERFLOWstateistoissueaSFRXstrobe.ThiswillgettheradiobacktoIDLEstate,regardlessoftheMCSM1.rxoff_modesetting.PleaseseetheErrataNoteforadescriptionofabugrelatedtotheRXFIFO-OVERFLOWstate.Figure4.RXFIFO.OVERFLOW(IOCFGx=0x06)AddressFiltering(IOCFGx=0x06)Assumetransmittingthefollowingpacket:0x0At0x07,0
14、x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,OxOA(theradiosettingsarethesameasin3.1.1).Thereceiverhavethesameradiosettingsasthetransmitter,butinadditionitisconfiguredtouseaddressfiltering(pktctrli.adr_chk=1andaddr=0x06).Whenaddressfilteringisenabled,thereceiverwillinterpretthesecondbytereceivedafterthesyn
15、cworeastheaddress(iffixedpacketlengthmodewhereused(pktctrlo.length_CONFIG三0),itwouldinterpretthefirstbyteaftersyncastheaddressbyte,sincethepacketwouldnothavealengthbyte).toFigure5.AddressFiltering(IOCFGx=0x06)Sincethereceiverhastheaddress0x06(addr=0x06)andthesecondbytereceivedaftersyncis0x07,thepacketwillbediscardedandGDOxwillde-assert(2).Figure5showsthatGDOxisde-assertedafter66us(2bytesmustbereceivedbeforetheaddressischecked;(28)(1/250000)=64us(1)showssyncreceived).AfterGDO
