Hezi Saar, Sr. Staff Product Marketing MangerSynopsys
Enabling Higher Data Rates and Variety of Channels with MIPI D-PHY℠
©2017MIPIAlliance,Inc. 2
Agenda• Designmotivation• MIPID-PHY evolution• SummaryofMIPID-PHYspecification• MIPIchannelevolution• ChannelmodelingresultsinADS• SpecificationrunthroughforD-PHYv2.1• MIPID-PHY3.0approvedroadmap
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DesignMotivation• Higherdatarate• Adaptiontonewertechnologies• Longerchannellength,channelevolution• Backwardcompatible• Reliablewithsufficientmargins• Augmentingexistingecosystem• Meetingcameraanddisplaypresentandfutureneeds• Growingmarketapplicationsandsegments• Thede-factostandardforcameraanddisplay• TargetautomotivesegmentforADASapplications
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MIPID-PHYEvolution• D-PHY1.0 1.0Gbps• D-PHY1.1 1.5Gbps• D-PHY1.2 2.5Gbps• D-PHY2.0/2.1 4.5Gbps• D-PHY3.0 10-14GbpsHigherdatarateenableshighpixelcountcamerasanddisplays
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BasicPHYArchitectureClock
MultiplierUnit
PHYAdapterLayer
PPI
PPI
PPI
D-PHYMasterClockLaneModule
D-PHYMasterDataLaneModule
D-PHYMasterDataLaneModule
D-PHYSlaveClockLaneModule
D-PHYSlaveDataLaneModule
D-PHYSlaveDataLaneModule
PPI
PPI
PPIPHY
AdapterLayer
APPI APPI
PHY PHY
RefClockControls IQ
MasterSide SlaveSide
APPI=AbstractedPHY-ProtocolInterface(completePHY,alllanes)PPI=PHYProtocolInterface(perlane,somesignalscanbesharedwithmultiplelanes)
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LaneModule
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SpecParameters D-PHY3.0 D-PHY2.0/2.1 D-PHY1.2 D-PHY1.1 D-PHY1.0
DataRate 10-14 Gbps 4.5Gbps 2.5Gbps 1.5Gbps 1Gbps
HS TxDifferentialVoltage
140-270mV 140-270mV 140-270mV 140-270mV 140-270mV
HSTxSingleEndedOutputImpedance
40-62.5ohms 40-62.5ohms 40-62.5ohms 40-62.5ohms 40-62.5ohms
HSTx CommonModeStaticVoltage
150-250mV 150-250mV 150-250mV 150-250mV 150-250mV
HSTxRise/FallTimes(20-80%)
TBD 30-100ps(4.5Gbps) 50ps-0.4UI 100ps-0.35UI 100ps-0.3UI
Tx Cpad Target(Drivenbyreturnlossinthespec)
TBD 3pF 3.3pF 3pF 3pF
HSTxDe-emphasis TBD -3.5dB(+/-1dB)-6dB(+/-1dB)
None None None
Spread SpectrumClocking
ModulationRate~30-33KhZSSCDeviation~-5000PPM
DownSpread
ModulationRate~30-33KhZSSCDeviation~-5000PPM
DownSpread
None None None
Scrambling YesNeedtobesupportedbytheController
YesNeedtobesupportedbytheController
None None None
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SpecParameters D-PHY3.0(In progress) D-PHY2.0 D- PHY1.2 D-PHY1.1 D- PHY1.0
HSTxTiming TBD TJ~0.3UIDJ~0.2UIRJ~0.1UIAllJitterrelativetoclockStaticSkew ClocktoData~-0.2to0.2UI
TJ~0.3UIAllJitterrelativetoclock.StaticSkew ClocktoData~-0.2to0.2UI
DatatoClockSkew~-0.2 to0.2UI
DatatoClockSkew~-0.15 to0.15UI
HSTxAC CMNoise 15mVrms(>450MhZ)25mVpk-pk(50-450MhZ)
15mVrms(>450MhZ)25mVpk-pk(50-450MhZ)
SameasDPHY2.0 Same Same
BER 1e-12 1e-12 1e-12 1e-12 1e-12
LPTxOutputHighLevel
TBD 0.95-1.05 0.95to1.3V 1.1-1.3 1.1-1.3V
LPTxMinSlewRate TBD 25mV/ns 25mV/ns 30mV/ns 30mV/ns
LPTxMaxSlewRate TBD 500mV/ns(0pF Load)300mV/ns(5pF Load)250mV/ns(20pF Load)150mV/ns(70pF Load)
SameasDPHY2.0 Same Same
ChannelLoss MPHY SpecChannel2(7-14inch)
MPHY SpecChannel2(7-14inch)
MPHYSpecChannel2(7-14inch)
DPHYSpecChannel(5-11inch)
DPHYSpecChannel(5-11inch)
ChannelISI TBD 0.2UI 0.2UI +/-0.1UI +/-0.2UI
Channel ClktoDataStatix Skew
TBD +/-0.1UI +/0.1UI None(IncludedinChannelISI)
None(IncludedinChannelISI)
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SpecParameters D- PHY3.0 D- PHY2.0 D- PHY1.2 D- PHY1.1 D- PHY1.0
HSRxDeskew InternalClocktoDatausingTx CalibrationPattern
InternalClocktoDatausingTxCalibrationPattern
InternalClocktoDatausingTxCalibrationPattern
None None
HSRxDifferentialInputThreshold
TBD +40mVto-40mV +40mVto-40mV +70mVto-70mV +70mVto-70mV
HSRxCommon ModeDC
TBD 70-330mV 70-330mV 70-330mV 70-330mV
HSRxDifferentialInputImpedance
80-125ohms 80-125ohms 80-125ohms 80-125ohms 80-125ohms
HSRxCommonModeNoiseTolerance
TBD 100mV(pk-pk) 100mV(pk-pk) 200mV(pk-pk) 200mV(pk-pk)
HSRxJitterTolerance TBD Tjtol~0.5UIDJ~0.4UIRJ~0.1UI
Tjtol~0.5UI NoIndependentJitterSpec
NoIndependentJitterSpec
HSRxSkewTolerance TBC Static Skewof+/-0.3UIbetweenClockanddata
Static Skewof+/-0.3UIbetweenClockanddata
Setup/Hold~0.2UI
Setup/Hold~0.15UI
HSRxCommonModeVoltageDC
TBD 70-330mV 70-330mV 70-330mV 70-330mV
HSRxCommonModeTermination
TBD 14pF-60pF 14pF-60pF 2-60pF 2-60pF
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Synopsys
SpecParameters D-PHY3.0 D-PHY2.0 D-PHY1.2 D- PHY1.1 D- PHY1.0
LPRx MinInputVoltage
TBD 740mV 740mV 880mV 880mV
LPRxMinPulseWidth TBD 20ns 20ns 20ns 20ns
PPIDataBusWidth TBD 8/16/32bit 8bit 8bit 8bit
COGChannelSupportforDisplays
YesWIPPlantosupporthigherchannellossfordisplays.
YesWIPPlantosupporthigherchannellossfordisplays.
None Not Known -
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Synopsys
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Tx+ShortChannel+Termination(Tx EyeDiagram)
Synopsys
HexEyeWidth~0.16UIEyeWidth~0.54UI
TransmitSwing~+140to-140mVTxImpedance~62.5ohmsTxDeemp~NoneTxCpin~3pF
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Tx+SpecChannel +Termination
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EyeHeight~86mVEyeWidth~0.577UI
EyeHeight~88mVEyeWidth~0.576UI
TransmitSwing~+140to-140mVTxImpedance~62.5ohmsTxDeemp~NoneTxCpin~3pF
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Tx+SpecChannel+Termination(9Gbps)• DataRate=9Gbps• PatternPRBS9• Tx de-emphasis=7dB• Tx outputimpedance125ohm• Cpad =1.5pf• ChannelReference2• Rxtermination80ohm• RxequalizationCTLEadaptable.• Zero1=840Mhz• Pole1=1.048Ghz• Pole2=9.586Ghz• DC_gain 1.98776• RxDFEAdaptive2tap
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OverallLeoniChannelPerformance
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RosenbergerRG174
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RosenbergerRG5811
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RosenbergerRTK031
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Fakra ConnectorModeling• TDRperformance:
– ADSgeneratedequivalentmodels– S-parametermodel/TDRprofile
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SourceKeysight Technologies
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Modesofoperation
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Summary• MIPID-PHY
– Isthede-factostandardforcameraanddisplayconnectivity– Operatesat4.5Gbps overmultiplelanes– EnablesSoCs foremergingapplications:automotiveinfotainment
andadvanceddriverassistancesystems(ADAS),allowinghigherdatatransmissionoverlongerchannels
– Providesflexibility,speed,powerandcostbenefits– Useslow-latencytransitionsbetweenhigh-speedandlow-power
modeswithhighnoiseimmunityandhighjittertoleranceSynopsys
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MIPID-PHY3.0• Datarate10to14Gbps• SupportforautomotivegradePHYrequirementswithlong
channels• Transitionstoembeddedclockaboveadefineddatarates• RemainsbackwardcompatibletoMIPID-PHY2.1
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