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时间:2018-11-01
《理解mipi协议》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、理解mipi协议完成mipi信号通道分配后,需要生成勹物理层对接的时序、同步信号:MIPI规定,传输过程中,包内是200mV、包间以及包启动和包结束时是I.2V,两种不同的电压摆幅,需要两组不同的LVDS驱动电路在轮流切换工作:为了传输过程中各数裾包之阆的安全可靠过渡,从启动到数据开始传输,MIIP1定义了比较长的町雏过渡时间,加起來最少也存600多ns:而且规定各个时间参数足可调的,所以谣要一定等待时间,谣要缀存,我扪用寄存器代替FIFO,每通道128Byte。串行时钟勺数据差分传输的过渡时间关系如下:Figure2
2、1SwitchingtheClockLanebetweenClockTransmissionandLow-PowerModeCLKDpOn'*«••"Ths-^rot-Tnssnc—•ObcocnoaTerminatorwoqoOopo3、DOOOOCr;Tf>T£RU£N"•LP-114、LP«01LP-00—Ths«tile—♦CaptureSTDataBit•T5、ataTransmissioninBursts1CsupplyVduged2V-33V*)LP时的电平是0和1.2VLow-Powerstgnahnglevel(eg12V)MvwnumLPRXLowthresholdhsonswog(eg.200mv)rE3009000ee0EMaxLPRXHigh数据时钟通道对电压的要求ReferencegroundRgura13Llm»LevelsHS时的共模电平200mV,差模电平时200mV各个时间参数离要满足以下的要求:Table14GlobalOperationTimin6、gParametersPerimeterDf5cnprion51mMaxVbmNotesTcx-wssTimeoutforreceivertodelectofClocktraout>o7、endo£T«.nucL8、missioci3S95m5Tcx-itmtTimemtervilduringwhich(beHSiecer.«shilltmxeanyClockLaneHStxanutxon$.stamn;&omthebrfnmsi;ofTclxfumu95300m6Tcx-tolw-tnTunefortheClockLwereceivertoetuble(beHShoelenumxioo.from(he(uuepointwhenDnaaimTone£xDotoie>ch38as6Tcjt-TlAtTune(luit(hetianu9、xuitetduvettheHS*CuateaftetthelastpiylMdclockbitofaHStranumsuoobant60m$Tcix-*u>a*z*timethatthetiaxisnutterdrives(beHS-0sutepoorto$tamng(beClock300as5T&thm-cnTurnfor(beDataLaneicceivevtoenable(heHShoetmuiojitioaMmimffrom(hetimepointwbraDdctouetVqjuxTuneforDatotea10、ch'•rw<*ixJ5m*rUI6TmTvanux&nedturnintervalfiromthestartofTkvtiaz«Tax-tiax.tothe$tanof(heLP-U-.utefoUwwg翥HSbant105m*WUI3.5Tj^octTime(hatthebamnutterdrivesLP-11fcllou-w
3、DOOOOCr;Tf>T£RU£N"•LP-11
4、LP«01LP-00—Ths«tile—♦CaptureSTDataBit•T5、ataTransmissioninBursts1CsupplyVduged2V-33V*)LP时的电平是0和1.2VLow-Powerstgnahnglevel(eg12V)MvwnumLPRXLowthresholdhsonswog(eg.200mv)rE3009000ee0EMaxLPRXHigh数据时钟通道对电压的要求ReferencegroundRgura13Llm»LevelsHS时的共模电平200mV,差模电平时200mV各个时间参数离要满足以下的要求:Table14GlobalOperationTimin6、gParametersPerimeterDf5cnprion51mMaxVbmNotesTcx-wssTimeoutforreceivertodelectofClocktraout>o7、endo£T«.nucL8、missioci3S95m5Tcx-itmtTimemtervilduringwhich(beHSiecer.«shilltmxeanyClockLaneHStxanutxon$.stamn;&omthebrfnmsi;ofTclxfumu95300m6Tcx-tolw-tnTunefortheClockLwereceivertoetuble(beHShoelenumxioo.from(he(uuepointwhenDnaaimTone£xDotoie>ch38as6Tcjt-TlAtTune(luit(hetianu9、xuitetduvettheHS*CuateaftetthelastpiylMdclockbitofaHStranumsuoobant60m$Tcix-*u>a*z*timethatthetiaxisnutterdrives(beHS-0sutepoorto$tamng(beClock300as5T&thm-cnTurnfor(beDataLaneicceivevtoenable(heHShoetmuiojitioaMmimffrom(hetimepointwbraDdctouetVqjuxTuneforDatotea10、ch'•rw<*ixJ5m*rUI6TmTvanux&nedturnintervalfiromthestartofTkvtiaz«Tax-tiax.tothe$tanof(heLP-U-.utefoUwwg翥HSbant105m*WUI3.5Tj^octTime(hatthebamnutterdrivesLP-11fcllou-w
5、ataTransmissioninBursts1CsupplyVduged2V-33V*)LP时的电平是0和1.2VLow-Powerstgnahnglevel(eg12V)MvwnumLPRXLowthresholdhsonswog(eg.200mv)rE3009000ee0EMaxLPRXHigh数据时钟通道对电压的要求ReferencegroundRgura13Llm»LevelsHS时的共模电平200mV,差模电平时200mV各个时间参数离要满足以下的要求:Table14GlobalOperationTimin
6、gParametersPerimeterDf5cnprion51mMaxVbmNotesTcx-wssTimeoutforreceivertodelectofClocktraout>o7、endo£T«.nucL8、missioci3S95m5Tcx-itmtTimemtervilduringwhich(beHSiecer.«shilltmxeanyClockLaneHStxanutxon$.stamn;&omthebrfnmsi;ofTclxfumu95300m6Tcx-tolw-tnTunefortheClockLwereceivertoetuble(beHShoelenumxioo.from(he(uuepointwhenDnaaimTone£xDotoie>ch38as6Tcjt-TlAtTune(luit(hetianu9、xuitetduvettheHS*CuateaftetthelastpiylMdclockbitofaHStranumsuoobant60m$Tcix-*u>a*z*timethatthetiaxisnutterdrives(beHS-0sutepoorto$tamng(beClock300as5T&thm-cnTurnfor(beDataLaneicceivevtoenable(heHShoetmuiojitioaMmimffrom(hetimepointwbraDdctouetVqjuxTuneforDatotea10、ch'•rw<*ixJ5m*rUI6TmTvanux&nedturnintervalfiromthestartofTkvtiaz«Tax-tiax.tothe$tanof(heLP-U-.utefoUwwg翥HSbant105m*WUI3.5Tj^octTime(hatthebamnutterdrivesLP-11fcllou-w
7、endo£T«.nucL8、missioci3S95m5Tcx-itmtTimemtervilduringwhich(beHSiecer.«shilltmxeanyClockLaneHStxanutxon$.stamn;&omthebrfnmsi;ofTclxfumu95300m6Tcx-tolw-tnTunefortheClockLwereceivertoetuble(beHShoelenumxioo.from(he(uuepointwhenDnaaimTone£xDotoie>ch38as6Tcjt-TlAtTune(luit(hetianu9、xuitetduvettheHS*CuateaftetthelastpiylMdclockbitofaHStranumsuoobant60m$Tcix-*u>a*z*timethatthetiaxisnutterdrives(beHS-0sutepoorto$tamng(beClock300as5T&thm-cnTurnfor(beDataLaneicceivevtoenable(heHShoetmuiojitioaMmimffrom(hetimepointwbraDdctouetVqjuxTuneforDatotea10、ch'•rw<*ixJ5m*rUI6TmTvanux&nedturnintervalfiromthestartofTkvtiaz«Tax-tiax.tothe$tanof(heLP-U-.utefoUwwg翥HSbant105m*WUI3.5Tj^octTime(hatthebamnutterdrivesLP-11fcllou-w
8、missioci3S95m5Tcx-itmtTimemtervilduringwhich(beHSiecer.«shilltmxeanyClockLaneHStxanutxon$.stamn;&omthebrfnmsi;ofTclxfumu95300m6Tcx-tolw-tnTunefortheClockLwereceivertoetuble(beHShoelenumxioo.from(he(uuepointwhenDnaaimTone£xDotoie>ch38as6Tcjt-TlAtTune(luit(hetianu
9、xuitetduvettheHS*CuateaftetthelastpiylMdclockbitofaHStranumsuoobant60m$Tcix-*u>a*z*timethatthetiaxisnutterdrives(beHS-0sutepoorto$tamng(beClock300as5T&thm-cnTurnfor(beDataLaneicceivevtoenable(heHShoetmuiojitioaMmimffrom(hetimepointwbraDdctouetVqjuxTuneforDatotea
10、ch'•rw<*ixJ5m*rUI6TmTvanux&nedturnintervalfiromthestartofTkvtiaz«Tax-tiax.tothe$tanof(heLP-U-.utefoUwwg翥HSbant105m*WUI3.5Tj^octTime(hatthebamnutterdrivesLP-11fcllou-w
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