DisplayPort和eDP物理层兼容性测试中必须考虑的因素

1、DisplayPort Derivatives: eDP and MyDPandConsiderations of Physical Layer TestTopicsDisplayPort Technology eDP and MyDP CapabilitiesTesting ConsiderationsSomething Good is HappeningMyDPStandard DisplayPortComputingeDPEmbedded SystemsConsumer ElectronicsPortablesVESA: 200 members strong!DisplayPort Te

2、chnology RolloutsConfidentiality LabelMay 10, 20134MyDPDP1.2iDP 1.0DP1.0DP1.1eDP 1.01.21.31.41/2013DP1.3Today1.0CTS ReleasedSpecification Released4/2013Standard DP5/20127/20135/2012 12/2012Quick SummaryStandard DisplayPorteDPMyDPCapabilitiesNoteworthy FeaturesCompeting TechnologyP1,2, or 4 lanes Fou

3、r Settings for Lvl and Pre-emph SSC3 bit ratesH D M I D V I ? VGA?Integrable in low geometry silicon. Dominating in PCs now.1,2, or 4 lanes Multi-Level Pre-emph SSCMulti bit ratesLVDS MIPILow Power rivals MIPI. High data rates supported now.Attributes similar toDP1 laneFour LevelsPre-emphasis SSC3 b

4、it ratesMHL1080p/60 24 bit color achieved. Many connection models. Attributes same as DWhy Successful? 2 0 0 member companies participating Original DP foundational principles serving DP extensions C o n s u m e r focus in handling Legacy designs Interoperability Program/Self testing/Compliance test

5、ing K n o w l e d g e a b l e and Aggressive leadersCraig WileyParade TechnologiesAlan Kobayashi ST MicroKey Features of DisplayPortHot Plug DetectTransmitterAUXReceiver (Sink) A U X ChannelVery robust channel Setup Link/Maintain Link Test Assistance uPacket BasedNot based on Raster timings Fixed bi

6、t rates Physical Layer Features Multiple Bit rates Multiple LevelsMultiple Pre Emphasis Settings Spread Spectrum ClockingActive VideoBlanking AreaDisplayPort LinkThe AUX Channel enables Link setup and maintenance as well as control for testing.TxDriverLogicDecodeMain LinkAUXHot Plug DetectImage buff

7、erEDIDDPCDSinkLogicBit Recovery LockImage Frame bufferDisplayErrAUX CHComAUX Channel Implementation Manchester II SignalingMyDP: Portable TVPortable Get a pic of U- Tube or NetflicksIn the Future: Wireless from your portableToday:MyDP ConnectivityMy Entertainment SystemYour Entertainment SystemTrans

8、mission Requirements4k x 2k ?No Way !Not Yet AnywayUsing HDMI transmission as a benchmarkDisplay Technologies Available:DisplayPort: Maximum Lane Rate-5.4Gbs HDMI: Maximum Lane Rate-3.4GbsTiming1080i/720p1080p/8bit1080p/10bitLane Bit Rate750Mbs1.50Gbs1.87GbsPixel Rate75MPs150MPs187MPsComposite Bit R

9、ate2.23Gbs4.46Gbs5.57GbsLets Look CloserFor both MHL and MyDP the uUSB connector is the de facto connector, but it is not find it mentioned in either standard!D- and D+ is the differential data laneID: USB mode detectConclusion: There is only one data lane through which the composite data rate must

10、be conveyed.So the composite bit rate rate is the metric.5 PinsGetting down to One data lane5 Pins1 datalane4 data lanesAUX+/-, HPDConfig1/21 lowMyDP speed lineDisplayPort20 PinsPower, GroundPower, GroundHDMIMyDPuUSBHDMISpec Released: 1.0Compliance Testing starting: June 2013Maximum Data Rate: 5.4Gb

11、s to support 1080p/60HzuUSBVGAMyDP One could say that MyDP is not very new!It is just one lane DisplayPort! There are other changes to get to 5 pin interface, but nothing changes in the high speed signaling. S u b s e q u e n t slides will be paired; the first to show the standard DisplayPort attrib

12、utes and the next those for MyDP.DisplayPort TechnologyHot Plug Detect (Interrupt Request) 1 to 4 unidirectional high speed lanes Fixed data rate independent of display raster (refresh) Auxiliary channel for link communication and auxiliary data flow- Link Setup and Maintenance (1Mb/s - Manchester I

13、I )- USB 2.0 Transport (Fast AUX -540Mb/s - standard 8b/10b) Auto detect of cable plug/unplugSource DeviceSink DeviceDisplayPort TransmitterDisplayPort ReceiverMain Link (Isochronous streams)AUX ChLink / Device ManagementFAUX:USB2.0 transportMyDP Technology 1 to 4 unidirectional high speed lanes Fix

14、ed data rate independent of display raster (refresh) Auxiliary channel for link communication and auxiliary data flow- Link Setup and Maintenance (1Mb/s - Manchester II )- USB 2.0 Transport (Fast AUX -540Mb/s - standard 8b/10b) Auto detect of cable plug/unplugSource DeviceSink DeviceDisplayPort Tran

15、smitterDisplayPort ReceiverMain Link (Isochronous streams)AUX ChLink / Device ManagementHot Plug Detect (Interrupt Request)FAUX:USB2.0 transport 1 unidirectional high speed lane Fixed data rate independent of display raster (refresh) Auxiliary channel for link communication and auxiliary data flow-

16、Link Setup and Maintenance (1Mb/s - Manchester II )- Single Ended Polling detect of cable plug/unplugSingle EndedDP Technology: SpecificationsSilicon structures: Structure leveraged from PCI Express Implementable on sub 65nm process Termination Voltage must be 2volts (internal to IC)Receiver PLL BW=10MHz effective.Jitter tolerance curve specified.Data Rate 1.62 Gbs (RBR) 2.7 Gbs(HBR)units supporting HBR must support RBR 5.4Gbs(HBR2) units supporting HBR2 must support HBRMyDP Technology: SpecificationsSilicon structures: Structure leveraged from PCI Express Impl