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HT45F0060 Datasheet(PDF) 57 Page - Holtek Semiconductor Inc |
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HT45F0060 Datasheet(HTML) 57 Page - Holtek Semiconductor Inc |
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57 / 95 page  Rev. 1.00 56 July 19, 2017 Rev. 1.00 57 July 19, 2017 HT45F0060 RGB Dimming LED Flash MCU HT45F0060 RGB Dimming LED Flash MCU Bit5 CASRXEN:CascadingtransceiverRXfunctionenablecontrol 0:Disable 1:Enable ThisbitisusedtocontrolthecascadingtransceiverRXfunction.Whenthisbit issetto1,thecascadingtransceiverRXfunctionwillbeenabled.Thisbitwill automaticallybeclearedto0whentheRXshiftregisterfullflag,FULL24,isset high.Thenitwillautomaticallybesetto1againwhenthecascadingtransceiverreset flag,CASRES,issethigh.Whenthisbitissetto0,thecascadingtransceiverRX functionwillbedisabled.However,thecascadingtransceiverresetsignalcanstillbe decodedandrecognizedastheRXfunctionisdisabled.NotethatthePASSENbit willautomaticallybeclearedto0byhardwarewhentheCASRXENbitissetto1by hardwareandviceversa. Bit4 D4:Reservedbit,shouldbefixedat"0". Bit3 TRGTX:CascadingtransceiverTXoutputbuffertriggercontrol 0:Noactionordataistransmittedcompletely 1:TXbufferoutputistriggeredanddataistransmittingcontinuously Thisbitcanonlybewrittenintowithavalueof"1"whentheCASENbitishigh.The TRGTXbitwillbeclearedto0byhardwarewhentheTXshiftregisteremptyflag, EMPTY24,issethigh.Itwillalsobeclearedto0whentheCASENbitissetlow. NotethattheEMPTY24bitwillbeclearedto0byhardwarewhentheTRGTXbitis sethighbysoftwareregardlessofthetransceiveroperationmodes.SettingtheTRGTX bitintheRXmodewillhavenooperation. Bit2 PASSEN:CascadingtransceiverinputsignalbypassRXcircuitenablecontrol 0:Disable–NotbypasstheRXcircuit 1:Enable–BypasstheRXcircuit Thisbitcontrolsthecascadingtransceiverinputsignalbypassfunction.Itwill automaticallybesetandclearedbyhardware.WhentheCASRXENbitissetto1 byhardwaretoenablethecascadingtransceiverRXfunction,thePASSENbitwill automaticallybesetto0byhardwareandthecascadingtransceiverinputsignalwill bedecodedbytheRXcircuit.WhentheCASRXENbitisclearedto0byhardware todisablethecascadingtransceiverRXfunction,thePASSENbitwillautomatically besetto1byhardware.Atthesametimethecascadingtransceiverinputsignalwill bypasstheRXcircuitanddirectlybeconnectedtotheCASDOline. Bit1 CASMOD:CascadingtransceiverTXorRXmodeselection 0:RXmode 1:TXmode ThisbitcanonlybemodifiedwhentheCASENbitissetlow.Thecascading transceiveroperatingmodeshouldfirstbeselectedfollowedbysettingtheCASENbit high. Bit0 CASEN:Cascadingtransceiverenablecontrol 0:Disable 1:Enable Thisbitisusedtoenableordisablethecascadingtransceiverfunction.Whenitis clearedto0todisablethecascadingtransceiverfunction,onlytheinternalcontrol circuitandcorrespondingread-onlyflagsintheINTCONregistertogetherwiththe TRGTXbitwillbereset.Otherregisterscontentswillbekeptunchanged.Notethatin theRXmodethecontentsoftheCASD0~CASD2registerswillbeunknownwhenthe CASENbitissetlow.WhentheCASENbitissetlow,theCASDIinputpathwillbe switchedoffandtheCASDOoutputwillbefloating. |
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