VESA – DisplayPortTM Alternate Mode on USB-CTM - · PDF fileUSB Implementers Forum © 2016 USB Developer Days 2016 VESA – DisplayPortTM Alternate Mode on USB-CTM - Technical Overview

USBImplementersForum©2016

USBDeveloperDays2016

VESA– DisplayPortTM AlternateModeonUSB-CTM - Technical

OverviewJim Choate

VESA Compliance Program Manager

HoustonSeptember27– 28,2016

September27– 28,2016



Agenda• Introduction• DisplayPortTechnologyRoadmap• DisplayPortAlternateModeonUSB-CTechnicalOverview• Compliance• Demo• Summary

September27– 28,2016 2

USBType-CTM andUSB-CTM aretrademarksofUSBImplementersForum




AboutVESA

VESAistheVideoElectronicsStandardsAssociation

Globalindustryalliancewithmorethan230membercompanies

Missionistodevelop,promoteandsupportanecosystemofvendorsandcertifiedinteroperableproductsfortheelectronicsindustry

Facilitates displayrelatedstandardsdevelopment,publicationandcompliancetesting,aswellaspromotionandmarketing

DevelopsOpenstandards,contributionisopentoallcompaniesatallstagesofdevelopment




ExampleofVESAMembers

4



DisplayTrendsandDisplayPortRoadmap


2007 20082006 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

1080p 4K 30Hz 4K 60Hz4K 60Hz

HDR

8K 60HzHDR

8K 120HzHDR

Televisions

Notebook PC

PC Monitors1080p 4K 60Hz 5K 60Hz

4K 60HzHDR

8K 60HzHDR

8K 120HzHDR

1680x1050 1080p 2880x1800Quad HD

4K 60Hz4K 60Hz

HDR

5K 60Hz ?

DP 1.0-1.1Up to Quad HD

DP 1.2Up to 4K 60Hz, 10 bit color

DP 1.3Up to 5K

DP 1.4Up to 8K

DP XXUp to 8K 120HzLink Rate per Lane

2.7 Gbit/sec 5.4 Gbit/sec

8.1 Gbit/sec 10 Gbit/sec

?

You are

here




DisplayPort SpecificationSummary

6

§ TheVESADisplayPortStandard,Version1.4,wasreleasedonMarch1,2016§ ReplacesDisplayPortVersion1.2a/DP1.3fornewdesigns

§ Backwardcompatible,offersnewoptionalfeatures

§ NewSiliconsupportingHBR3isunderdeploymentandcertificationtestinghasstarted

§ DisplayPort 1.4NewFeatures§ ForwardErrorCorrection

§ AddsDSC,Audioextensions,improvedMSTfunctionality,AdaptiveSync

§ 30bitcolor;8K4:4:4,7680X4320@60Hz– SingleCable




DP VersionIntroduction

Link RateName

Bit rate MaxResolution Support(24bpp,60HzRefresh,4:4:4format)

MaxResolution Support(24bpp,60HzRefresh,4:2:0format)

DP1.0 RBR 1.62Gbps 1920x1080 Not supported

HBR 2.7Gbps 2560x1600 Not supported

DP1.2 HBR2 5.4Gbps 4Kx2K Not supported

DP1.3/1.4 HBR3 8.1Gbps 5K x3K 8Kx4K

DP1.4LinkRateIncrease

7

TotaluseabledatatransferrateforDP1.4=25.92Gbps

8.1Gbps linkrate,perlanex0.8toaccountfor8b/10btransportcodingoverheadx4maximumnumberofavailablelanes25.92Gbps totalusabledatatransferrate




OptimizationforSharedInterfaceUse

8

• NumerousspecificationenhancementstosimplifytheuseofDisplayPortasaningredientinthefollowinginterfaceexamples:• TheUSB-Cconnector,usingtheDisplayPortAltMode• VESADockPortStandard• VESAMobilityDisplayPortStandard(MyDP)• VESAEmbeddedDisplayPortStandard(eDP)• ThunderBolt3.0• Wirelessinterfaces




DisplayPort 1.4ContinuestoSupportOtherFeaturesthatareUniquetoDisplayPort

9

• MultiplemonitorsusingMulti-Stream• High-definitionaudioformats• AdaptiveSync• ProtocolconverterstoVGA,DVI,orHDMI• Lowvoltage,ACcoupledinterfacecompatiblewithsub-micronprocessgeometry,simplifyingintegration• DatascramblingandfixedlinkratessimplifyEMIandRFImitigation



September27– 28,2016 10

DP1.0/1.1(4/2007)– HBR1• Asetupdrivenby6Mini-DP

connectorsat2560x1600@60Hzonsinglegraphicscard

DP1.2(12/2009)– HBR2• UHD– 4K• 30bitcolor;3840x2160@60Hz• TiledDisplay:4Kx2Ksinglecable• TiledDisplay:5Kx3KDualCable• AdaptiveSync

DP1.3(9/20014)– HBR3• HDR,PQGamma,BT2020• HDCP2.2,420• TiledDisplay:8K444DualCable• 5Kx3K@60and4k@120HzSingleCable• SinglecableforDPA/V,powerand

datausingDPAltModeonUSB-C

DP1.4(3/20016)– HBR3&DSC• UHD– 8K• 30bcolor;8K444(7680x4320) @60Hz

– SingleCable• VR– 4K+120Hz+USB3.1+Pwr• MultiDisplayDockingwithDPAlt

ModeonUSB-C• DynamicHDRMeta

ProgressionofDisplayExperiencewithDisplayPort



DisplayPortAlternateModeonUSB-COverviewand

Certification

September27– 28,2016 11




VESADisplayPortAlternateModeonUSB-CSummary

12

• TheVESADisplayPort AltModeStandard,Version1.0a,wasreleasedonAug10,2015• EnablestheuseoftheUSB-CinterfaceforDisplayPort• DisplayPort AlternateModeisafunctionalextensionoftheUSB-Cinterface• DevelopedinliaisonwiththeUSB3.0PromoterGroup• TheDisplayPort AlternateModeoverUSB-CComplianceTestSpecificationdraftisunderGeneralMemberReviewwithexpectedreleasenextquarter




ExampleUSBType-CConfigurations

13

DisplayData

DeviceSupplyingPower

Dock

USB2.0or3.1Data

USB2.0or3.1Data

DeviceCharging

USB

DeviceCharging

DisplayData

EitherendcanserveasUSBHost,USB-PDPowerConsumer,andDisplayPortVideoSource(theseservicesareindependentofeachother



USB-CwithDPAltModeEcosystemDeploymentUnderway

September27– 28,2016 14

StarTech 4in1Adapter

DPAltModeProducts

Manydifferentadaptersavailable

• CtoDPadapters,Multifunctiondocks

• TypeCprotocolconverters(HDMI,VGA,DVI)usingDPAltMode

Moreareexpectedsoon

§ MajorPCcontinuetolaunchnewproductswithDPAltModeoverUSB-C

§ ThunderboltincludesUSB3.1+DPAltModeasstandardcompatibilitymodes

HPProTablet608G1

MicrosoftLumia 950and950XL

Smartphones

GoogleChromebookPixel

AppleMacBook

DellXPS13/15 LG27UD884Kdisplay

LGG5



WideRangeofCables/DPAltModeAdaptersShippingToday

September27– 28,2016 15

USB-CtoDP

USB-CtoHDMI

StandardUSB-CtoUSB-CCable

USB-C toVGA

USB-CtoDVI

TheseadaptersenabletheuseofthevastinstalledbaseoflegacydisplaysfortheincreasingnumbersofsystemsthatsupportDisplayPortAlternateModeoverUSB-C.




USB-CConnectorFunctionalExtensionDisplayPort AlternateMode

16

• ApassiveFullFeatureUSBType-CtoType-CcablecancarryuptofourDisplayPort lanes• SameperformanceandfeaturesasastandardDisplayPort connection• AllowsDisplayPort dataratestoincreaseinthefuture,sincetheUSBType-Cconnectorhasveryhighdataratecapability

• DisplayPort canbecombinedwithUSB3.1operationoverthesameUSBType-Ccable• USB2.0andUSBPowerDeliveryisavailableinallconfigurations

USB HostWith DisplayPort Alternate

Mode Capability

USB Type-CConnector

USB Device (or Dock)With DisplayPort Alternate Mode

Capability

USB Type-CConnectorUSB Type-C to Type-C Cable

DisplayPort

USB 3.1 Data

Power Deliveryor

or




USBType-CReceptaclePins

17

• Belowisadiagramofthepinsdefinedforsystemordevicereceptacle

CableGround CableBusPower

HighSpeedDataPath(TXforUSB,orforDPAltMode)

HighSpeedDataPath(RXforUSB,orTXforDPAltMode)

USB2.0Interface

PlugConfigurationDetection• OnebecomesVCONN,forcableor

adaptorpower• CCisusedforUSB-PD

communication

ForSidebandUse(notusedforUSB)DPAuxforAlt

Mode




DisplayPort andUSB3.1overaStandardUSB-CCable

18

• Usesastandard“FullFeature”USB-CtoUSB-CcablewhichisdesignedtoincludeDisplayPort• Theaboveconfigurationusestwohigh-speedlaneseachforDisplayPortandUSB3.1• Idealfordockingstations,orfordisplaysorTVsthatincludeUSB3.0functions

• DisplayPort performanceprovidedbytwolanes• DPv1.2(existingSourcedevices):Two1080pdisplays,orone4k@30Hz• DPv1.4(HBR3Sourcedevices):4K@60,orHDR4K@60using4:2:0and12bpp

• 4LanesofDisplayPort availableifonlyUSB2.0implementedinSink• Supportfor4K@60,ortwo2560x1600,orfour1080p

USB-C Device with DisplayPort Sink

USB-C Device with DisplayPort Source

(such as phone, tablet, PC,set-top box, game console, or output of docking station

or AV Receiver)

(such as monitor, TV, or input into docking station,

or AV Receiver )

SSTX

SSRX

USB 2.0

VBUSGND

CC, HPD ID

Type-CConnector

Type-CConnector

DP Lane 1

DP Lane 0

AUX+, AUX-

USB 3.1

DisplayPort




ExampleUSB-CPHYPortConfigurationSwitchforSystemswithDisplayPortSource

19

• Equalizationandre-driversfortheSSUSBandDisplayPort signalsincreasemargins• CompensatesforlossinPCBtracesandswitch,increasessystemdesignflexiblyandcompliancemargin• RoutessignalsaccordingtoplugorientationanduseofSSUSBand/orDP• Similarswitchneededatsourceside

USB Host System with DisplayPort Source

PS8740

Devic e Cont ro lThrough Pin Conf ig

or I2C Slave Por t

Devic eCont ro l

Cont ro l Regis t ers

Switc

h Ma

trix

USB TX / DP TX

USB TX / DP TX

EQ

USB RX / DP TX

EQ

USB RX / DP TX

AUXInt erc ept ion

USB TX EQ

DP TX EQ

DP TX EQ

DP TX EQ

DP TX EQ

USBCont ro l ler

DisplayPortSourc e

USB

Type

-C R

ecep

tacle SuperSpeed USB

With DP Alt ModeUSB RX

DP AUX



Supportedcabletypes• USB-CtoUSB-C• USB-CtoDP• USB-CtoProtocolconverter• USB-CtoDockingstationorembeddedhubsolution• USB-CtoDPcablesmustincludelogictosupportUSBPDandDPconnectiondetectprotocols.

• ProtocolconvertersmustsupportsomeoptionalfeaturesinDP1.3specification• ProtocolconverterstranslatesourceDPsignalstotherespectiveprotocolsupported

September27– 28,2016 20

DPPDController

HPDUSB-PD

DPSignaling

HDM

I

ProtocolConverter

HDMISignalingDPSignaling

USB-PDUSBPD




DisplayPortOveraUSBType-CtoUSBType-CFullFeaturePassiveCable

21

• UtilizesoptionalDisplayPort AltModecapabilityofUSBType-Cconnector• DisplayPort canuseallfourhighspeedlanestodeliverfullDisplayPortperformance• TheDisplayPort AUXChannelusestheSBUpins• TheDisplayPort HPD/IRQistransmittedovertheCCpinusingtheUSB-PCprotocol• USB2.0andUSBPowerDeliveryalwaysavailable

CableDisplayPort

Sink

SSTX1

SSRX1

SSTX2

SSRX2

USB 2.0

SBU1/2

DisplayPort Source

DP Lane 2

DP Lane 3

DP Lane 1

DP Lane 0

AUX+, AUX-

USB Type-C

Connector

USB Type-C

Connector

VBUSGND

CC, HPD / VCONNID




USBType-CtoDisplayPortAdapterCable

22

• UsesDisplayPort AltModecapabilityofUSBType-Cconnector• Cablemustbereversible,worksineitherdirection;fourlanesofDisplayPort• SupportslegacyDisplayPortSourceandSinkDevices• DetectedbyUSBType-CenableddevicethatsupportsDPAltMode• NosupportforUSB(otherthanUSBBillboard)orotheraltmodes

– ThesefeaturesarenotsupportedbylegacyDisplayPortdevices

Cable

StandardDPor

MiniDPConnector

DP Lane 0

DP Lane 1

DP Lane 2

DP Lane 3

HPDHPD SignalConversion

AUX+

SSTX1

SSRX1

SSTX2

SSRX2

SBU1

SBU2 AUX-CC, HPD

DisplayPortConnector

USBType-C

Connector

IDVCONN




USBType-CtoHDMI,DVIandVGAAdapterCables/CableAdapters

23

• UsesDisplayPortAltModecapabilityofUSBType-Cconnector• AdapterCable:USBType-Cplugononeend,legacyplugonotherend• Adapter:USBType-Cplugononeend,legacyreceptacle onotherend• USBType-CwillNOTsupportDisplayPortDualMode(DP++)• USBType-CtoHDMIConverterssupportuptoHDMI2.0andCEC

Cable

HDMI,DVI,

or VGADisplay

DisplayPort Source

DP Lane 0

DP Lane 1

DP Lane 2

DP Lane 3

AUX+

DisplayPortTo

HDMI, DVI, or VGA

Converter

LegacyConnector or Receptacle

AUX-

CCHPD

USB Type-C

Connector

VCONNID

USBPDController

Bothstylesareavailable




ExampleDockingConfigurationsusingtheUSBType-CDisplayPortAlternateMode

24

SimpleDockingConfiguration

MoreComplexDockingConfiguration

Docking Station

USB Type-C Enabled USB Host and

DisplayPort Source

Legacy USB

Legacy DP

Power

DPRepeater

USB RepeaterUSB

Type-CUSB

Type-C

Docking Station

USB Type-C Enabled USB Host and

DisplayPort Source

USB Hub

DisplayPortBranch

USBType-C

USB Type-C

Legacy USB

HDMIDP to HDMIConverter

Legacy DP

Power

Switch / Mux

USBType-C USB Type-C

LegacyUSBLegacyUSB




DisplayPortAlternateModeComplianceTestPlan

25

• VESAisdevelopingtheDPAlternateModecompliancetestincoordinationwiththeUSB-IF• Compliancetestspecification(CTS)isunderundergeneralmembershipreview• Draft1.0expectedtoreleasenextquarter

• TheobjectiveistoenablecompliancetestingforUSBType-C,andtheDPAltModeforUSBType-C,atthesameATCsenablingtheuseofasingleteststation• CertificationofmanyDisplayPort AlternateModeenabledproductsisinprogressatGRLandAllion ATCs



CertificationTestCoverageTestplanandCTScoversallfeaturesandsupportedpinassignments.• USBPDComplianceTesting

• Demonstrationofproperfunctionality/behaviorforDPAltModes• AdevicemustpassDisplayPort AltModeUSB-PDcertificationteststoreceiveDPcertification

• ElectricaltestingofallsupportedmodeswithPHYtestfixtures• USBPHYelectricals

• USB3.1Gen15G• USB3.1Gen210G(ifsupported)• USB2.0480Mb/s

• DPPHYelectricals (DP1.2bCTS)• RBR• HBR• HBR2(HBR3compliancerequirementsunderdevelopment)• AuxChannel

September27– 28,2016 2626



CertificationTestCoverage(continued)• USB3.1Interop testing(functional)• USB3.1Linktesting• FullDPcertificationtestingusingreferenceAdapters

• Interoperabilty testing• Interop testingwitharequiredmatrixofproductsandadaptersthatareavailable.• TestingwithreferenceUSB-CtoDPadaptersisrequired.• TestingwithreferenceDPAltModeoverUSB-Creferencesourcesandsinksisrequired.

• Linklayertesting• EDIDtesting• MSTtestingifsupported

• CertificationtestingofUSB3.1functionalitynotduplicatedifproductvendorprovidesVESAUSB-IFComplianceTestID

September27– 28,2016 27



Cable&Adaptertesting• Certificationtestingofcables/adapters• USB-CtoUSB-CcablescertifiedviaUSB-IF• USBTypeCtoDPcable

• Electricaltesting• Interoperabilitytesting• LinkLayertesting

• Protocolconverters(allprotocolconvertersareDPsinks)• Receivertesting• USBPDtesting• LinkLayerSinktests• Interoperabilitytests

September27– 28,2016 2828



VESASynchronizationwithUSB-IFComplianceTestProgram• Coordinatecertificationplans,testcoverageandtimingforearlyproducts• Avoidschedulingconflicts• ParticipateinUSB-IFcertificationandinteroperabilityevents• VESAwillcontinuetoparticipateinUSB-IOPeventsandworkshops

September27– 28,2016 2929



VESAPlugTest Eventsin2016• PlugTests havesignificantvaluetomembercompanies.Particularlyasnewcapabilitiesandproductsaredeployed.

• VESAplannedtohostthreePlugTests in2016.ThethirdeventthisyearisinTaiwan.

• NovemberTaiwaneventintroducedworkshoppre-certtesting

• Objectivesof2016Plugtests• Demonstrateandimproveinteroperability

• Particularlyimportantfornewproductcapabilities• TestDP1.4andDPAltModeoverUSBType-C• VerifyTestEquipmentCorrelation

• Dates/Locations:• Done: March23-26th2015,MilpitasCA• Done: September14th-17th2015,EmbassySuitesBurlingameCA• Planned: TaiwanDecember12-16th,WestinTaipei

September27– 28,2016 30



LogoUseageGuidlines• NochangetoexistingDPproductlogoguidelines• ForDPoverUSB-TypeCproducts

• DPcertificationincludessubsetoftestingrequirementsofUSB-IF• RequirementtousenewfixturesandDPoverUSBType-Cadapters

• RefertoVESADisplayPort logouseage guidelinesforfurtherinformation• RefertotheUSB-IFTrademarkLicenseAgreementforfurtherinformation• VESAisworkingwiththeUSB-IFtocreateadditionallogoguidelinesaswellascommonproductdescriptionterminology

31September27– 28,2016



ComplianceTestIssuesCommoncompliancetestingproblemsencountered• DPAltModePHYCompliance

• OSspecifictoolsetareoftenrequiredtoproperlygetintotestmodes• Someproducts/chipsetsdonotsupportTestAutomatedoverAux• Thisisbeingaddressedinnewmethodologyunderdeveloper,theLinkTrainingTestAutomationMode.

• USB-PDtestingissues• Specificationhasbeenchanging• NewtestsaddedtodraftCTShaveuncoveredimplementationissues• DPAltModeCTSUSB-PDTest10.1.2StatusupdateCommandTestfailures.ThetestfailsiftheStatusfieldisinvalid

• AnumberofotherissueshavebeenidentifiedatrecentUSB-IOPeventsandVESAPlugTest events.Testswillbeaddedtoverifyproductcompliance.




ComplianceTestIssues• 1or2laneconfigurationcompatibilityissues

• SourceandsinkchipsetissuesuncoveredduringinteroperabilitytestingofDPAltModeproductsusingUSB-Cdocks.• IssueoccurswhenDockisconfiguredin2lanemodetosupport2lanesofDPand2lanesforUSB3.1

• Sourcesfailiftheydon’timplementfallbackrulesinDP1.4specification• Sinksfailiftheydon’tsupportreducedlaneoperationoriftheydon’tcorrectlyreportCRand/orLinkEQ/Alignmentfailuresonunconnectedlanes• Billboardimplementations:manyproductshavenotupdatedtoBillboardlatestrequirements• Compliancetestsareunderdevelopmenttoaddresstheseissues




BillboardComplianceTesting

34

• DownloadUSB3CVfromUSBIFdeveloperspage

• X32orX64• InstallonsystemwithxHCI

(noAltModeSupport)• SelectBillboardtestsandrun





Test Setup for DP PHY testing using DP Aux Test Automation

AuxReferenceController

Fixtures

AUXPHYtest

AUXAutomation

DP TPAs

Connector:DP ormDP

Connector:Type C Keysight TPAs

DPcable

USB-CtoDPcable

Unigraf DPR-100

DPPHYtest

DPHBR2PHYtest

AUXPHYtest

AUXAutomation

Test Setup for DP PHY testing using Link Training Test Automation

DPAltModePHYTesting

35



SummaryofDPAltModeoverUSB-Csupportedfeatures

September27– 28,2016 36

Feature DisplayPortAltMode

SupportsHDMI1.4bdisplays ✓Supports4K30Hzdisplays ✓NoadapterrequiredforconnectionfromUSBType-CtostandardHDMITV ✓

SupportsHDMI2.0displays ✓Supports4K60Hzdisplays ✓SupportsHighDynamicRange ✓Supportsmultiplevideostreams ✓ConnectstoUSB-Cenableddisplaysthatareshippingnow(DisplayPortAltModeenabled) ✓

SupportsUSBSuperSpeedconcurrentwithvideodisplay ✓

SupportssimpleadapterforconnectiontoexistingHDMIcables ✓

Avoidsrewiringofpre-installedHDMicables ✓SupportsHDR ✓Supports4K60Hzfullcolor(4:4:4) ✓Supports4K60Hzdeepcolor ✓Supportsmultiple4Kvideos ✓

Feature DisplayPortAltMode

SupportsHighDynamicRange ✓Supports4Khighrefreshrate(120Hz) ✓Supports8Kvideo(withHBR3plusDSC) ✓LowlatencyinteractiveVRexperiencewith90+4K+withDP+USB3.0 ✓

SupportsUSBType-ConTV ✓RunsonUSBType-CtoUSBType-Ccables ✓

ConnectstowiderangeofalreadydeployedUSB-Cdevices

✓

UseCases

Multi4kdisplayproductivitywithsinglecabledocking ✓

LowlatencyInteractiveVRexperiencewithdual4k>90Hz+Power+USB3.1(HBR3+DSC) ✓

SmoothlowlatencygamingwithAdaptiveSync ✓8kHDRworkstationproductivitywithDP+DSC ✓

DisplayPort 1.4alongwithDPAltModeoverUSB-C&DSCcandotodaywhatyouwantyourproductstodotomorrow.



Demos

September27– 28,2016 37



Summary• DP1.4introducedmanynewcapabilitiesandproductsareunderdevelopmentandinthecertificationprocessforthesenewfeatures• ManyCertifiedUSB-CdeviceswithDPAltModeareshippingwithmanymoreindevelopment• DPAltModeCTSisunderGeneralMemberReviewandwillbepublishedbyVESAinQ4’2016.• DPAltModedevicecertificationisavailablefromcertifiedATCssince2015,allowinguseofDPlogo• Final2016VESAPlugTest eventisinTaiwanDecember12-16th 2016




Questions?


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Documents

VESA – DisplayPortTM Alternate Mode on USB-CTM - · PDF fileUSB Implementers Forum © 2016 USB Developer Days 2016 VESA – DisplayPortTM Alternate Mode on USB-CTM - Technical Overview