USB3.1最新技术及测试方案

1、usb3.1最新技术最新技术及测试方案及测试方案演讲内容演讲内容 agilent technologies, 20142 agilent 对最新数字总线标准的跟踪和支持对最新数字总线标准的跟踪和支持 usb 协会的结构及认证实验室协会的结构及认证实验室 usb 2.0/3.0 测试的最新变化测试的最新变化 usb 3.1 简简介介 usb 3.1 的发送信号质量测试的发送信号质量测试 usb 3.1 的接收容限测试的接收容限测试 电缆、连接器测试电缆、连接器测试 总总结结agilent 对最新数字总线标准的跟踪对最新数字总线标准的跟踪和和支持支持 our solutions are drive

2、n and supported by agilent experts involved in international standards committees: joint electronic devices engineering council (jedec) pci special interest group (pci-sig) video electronics standards association (vesa) serial ata international organization (sata-io) usb-implementers forum (usb-if)

3、mobile industry processor interface (mipi) alliance and many others were active in standards meetings, workshops, plugfests, and seminars. we get involved so you benefit with the right solutions when you need themsuperspeed usb agilent technologies, 20143jim choateusb-if compliance committeeusb 3.0

4、electrical test spec wgrick eads pci-sig board memberbrian fetz displayport phy cts editorvesa board membermin-jie chongsata 6g / phy / logo contributorsata-io gold suite leadthe agilent infiniium scopes team maintains engagement in the top high tech standards organizationsperry keller jedec board m

5、emberagilent数字总线标数字总线标准准专家专家组组 agilent technologies, 20144usb接口设备的发展接口设备的发展 usb is the most successful interface in the history of pc device charging over usb has become a major consumer feature usb installed base is 10+ billion units and growing at 3+ billion units a year adoption is virtually 100%

6、 in pc and peripheral categoriesusb-enabled device shipments and forecast: 2009 - 2015source: in-stat, may 20112,000,0001,500,0001,000,000500,00002,500,0004,000,0003,500,0003,000,0004,500,0005,000,000200920102011usb low or full speed201220132014usb high speed2015usb superspeed agilent technologies,

7、20145units in thousands1 billion77m436musb协会（协会（implementers forum）的组织结构）的组织结构usbif board membersintel, nec, hp, microsoft, st-ericsson, lsiagilent activemembershipmarketing wgdevice wgcabconwgcompliance committeeusbtest specsusb2/usb 3tools and test procedurestest house approvalresponsibleownerinte

8、rop. workshop testingotgwgcompliance review boardtraining and equipment agilent technologies, 20146test spec wgowneragilent 对全球对全球usb认证测试实认证测试实验验室的室的支支持持xxcaljapansgstaiwanhong kong stc*test labs currently qualified for usb 3.0 certification approved labs are listed at /developers/c

9、ompliance/labsnts usanstl usamcci usatestronics belgiumallion usattakoreaallion japan shanghai taiwangrl usagrl india agilent technologies, 20147 hsic a low power usb chip to chip solution designed for mobile applications ssic usb 3.0 performance extension for chip to chip solution designed for mobi

10、le applications (download with usb3.0 spec). uses m-phy for physicallayer. usb power delivery spec an expansion of usb power delivery to allow more flexible power delivery up to 100w. power direction is no longer fixed. /developers/powerdeli very/ battery charging specification 1.2u

11、sb 的各种补充标准的各种补充标准usb 3.0 superspeed above link layer agilent technologies, 20148all usb-if specifications are available at /developers/docs/usb 的电源供电的电源供电（power delivery）标准）标准 increases negotiated power up to 100w sink/source can be swapped, power direction no longer fixed communica

12、tion of pd device capabilities occurs over vbus and optionally over usb. agilent technologies, 20149usb 2.0 updatestesting requirements evolve over time:details can be found at /index.htmlrise/fall time measurementhigh speed sq testing fixture change ecn - short channel equal

13、izer direct sma cable to scopehigh speed test j and k testingusb 3.0 updatescurrent testing reference equalizer is for a long channel 3m cable plus long host pcb trace (18-20db differential insertion loss). ecn 18 radio friendly sscusb 2.0/3.0 测试的最新变化测试的最新变化 agilent technologies, 201410usb 2.0/3.0 测

14、测 试试 的的 最最 新变新变 化化usb 3.1 简介简介 agilent technologies, 201411here are some terms and their meanings used during thispresentation gen1 superspeed usb 3.0 5 gbps signaling rate gen2 10 gbps signaling rate genx any of the above superspeed gen1 phy requirements (5 gbps) superspeedplus gen2 phy requirement

15、s (10 gbps)12usb 3.1 gen1 和和 gen2 的比较的比较gen1gen2data rate5gb/s10gb/scoding8b/10b128b/132bscrambler:g(x) = x23 + x21 + x16 + x8 + x5 + x2 + 1skpk28.1, k28.1skpos with variable number of skpslfpstraining, warm reset or side band signaling protocol (pwr mgmt)device host capability negotiation is done d

16、uring lfps phase using lfps modulation schemescdrjtf bw 4.9mhzjtf bw 7.5mhzsscslew rate testnew df/dt requirement: 1250 (max) ppm/sde-emphasispost: -3dbpre: 2.7db post: -3.3dbrx ref eqctlectle (6 level) + 1 tap dfeeye height, tj100mv, 132ps (.66ui)70mv, 71.4ps (.714ui)informativerequiredusb3.1的发送信号质

17、量测试的发送信号质量测试项项目目 agilent technologies, 2014133.03.1tpxxcp0tx 5g eyeeye, tjxcp9tx 10g eyeeye, tjxxcp1ssc mod rate, ui and deviationecn15, 18xcp10ssc mod rate, ui and deviationxxcp1max slew raterjxcp10ssc df/dtrjxxlfpsvcm, vdiff, rt/ft, dcycle, tperiod, tburst,trepeatxlfpstperiod-ssp, trepeat-0, trepe

18、at-1, lpbm, tlfps-0, tlfps-1xtbdother test requirements may be identified during test specification development and early product testingtbdagilent的的usb 3.1 信号质量自动测试软件信号质量自动测试软件 agilent technologies, 201414agilent usb 3.1 测试软件的测试项目测试软件的测试项目10g test requirements:like 5g testing lfps, ssc and ssc requ

19、irements must be checkedadditional tests:scd1, scd2lbps tpwmtlfps_0tlfps_1ssc df/dteye and jitter after variable ctle + dfeagilent usb 3.1 测测 试试 软软 件件 的的 测试测试 项目项目 agilent technologies, 201415usb3.1 对测试点和眼图质量的要求对测试点和眼图质量的要求(tx far end) agilent technologies, 201416compliance channels are used to test

20、 tx and rx for worst case channel conditionsstandard connector: channel loss will dominate 11” pcb trace for device testing 5” pcb trace for host testing 3 meter usb 3.0 cablemicro connector: channel loss will dominate 11” pcb trace for device testing 5” pcb trace for host testing 1 meter usb 3.0 ca

21、bletethered: channel loss will dominate 11” pcb trace for device testing 5” pcb trace for host testing short usb 3.0 cableusb 3.1 compliance channels agilent technologies, 2014177db6db7dbdie to die target is 20db 5ghzhost/dev exceeding 7db may need repeaterusb 3.0和和usb 3.1 中对于传输通道的定义中对于传输通道的定义short

22、channel = no cable and shortest possible pcb tracesusb 3.1 中对于中对于10g信号传输通道的要求信号传输通道的要求 agilent technologies, 201418 full channel budget of 20 db at 5ghz symmetric loss for host and device tx eq settings informative only passing the limits at end of channel will dictate tx settings for short channels

23、 settings similar to usb 3.0 5g likely lossy channels near max specified likely to need pre/post cursor repeaters will be more common for longer channels模拟传输通道对信号的影响模拟传输通道对信号的影响embed channel file“device_3mcable.s4p”validation with infiniisim ofdsa91304a agilent technologies, 20141920agilent的嵌入的嵌入/去嵌

24、入软件模拟去嵌入软件模拟传传输输通通道或道或消消除夹除夹具具影响影响import channel s-parametersadd channel loss toptx_backpanel.s4p (simulate)remove fixture loss u7242_shortcable_fordev.s4p (measured)result is tethered tx response agilent technologies, 2014usb 3.1 的接收均衡器的接收均衡器ref ctle + 1 tap dfeeye at end of channelctle -6db+ 1 tap

25、 dfeembedded host channel21 agilent technologies, 2014tx compliance modes agilent technologies, 201422rx testing - loopbackusb 3.1 的链路协商流程的链路协商流程usb 3.1 信号质量测试中被测件码型的信号质量测试中被测件码型的切切换换ping.lfpstogglescp0/9djcp1/10rj agilent technologies, 201423用用agilent示波器控制被测件示波器控制被测件的的码码型型切换切换connect aux out to dut

26、 ssrx+ to toggle test modesfor dsox use cal outadditional methods to toggle tx test modes:use differential output of n4903b jbert81134a pgfunction gen or awg agilent technologies, 201424扩频时钟扩频时钟（ssc）仍然）仍然是是 usb 3.1测试中的一个挑战测试中的一个挑战 spread spectrum clocking is the intentional down-spreadingof the tran

27、smitters output data rate.-3700ppm-300ppmecn 15: nom -2000ppmwe isolate the 30-33khz ssc modulation frequency and its relevant harmonics agilent technologies, 201425usb 3.1 的接收容限测试的接收容限测试 agilent technologies, 201426 low frequency periodic signaling (lfps) loopback jitter tolerance j-bert ssc setup

28、n5990a test automation swusb 3.1的的lfps(low frequency periodic signaling) 码型码型：scd1 / scd2 trepeat modulation trepeat is modulated to express 0 (short) and 1 (long) scd1.lfps (4b0100), and scd2.lfps (4b1101) superspeed+ identity check agilent technologies, 201427usb 3.1的的lfps码型：码型：lfps based pwm sign

29、aling (lbpm) encodingrate (speed and lane) announcement and negotiationrepeater declarationpower state transition in repeatercan be expanded to:vbus control on/off, overcurrent sensingpower deliveryvendor specific operation agilent technologies, 201428usb 3.1 接收测试时的环回设置接收测试时的环回设置 modification is wit

30、hin skpos onlybert ed needs to filter skpos on expected as well as received pattern and compare remaining bits agilent technologies, 201429前期验证阶段在模拟端进行的前期验证阶段在模拟端进行的环环回回（analog loopback）early phy only testing available by using analog loopback analog loopback bypasses the clock compensation and both

31、 the dut rx as well as the dut tx run in the berts clock domain the dut does not modify the pattern and normal ber comparison can be used but since the dut uses the clock recovered by the rx to clock the tx jitter is transferred back to the bert ed. choose bert ed clocking with respect to dut jitter

32、 transfer characteristics agilent technologies, 201430usb 3.1 抖动容限的测试条抖动容限的测试条件件 base spec agilent technologies, 201431gen1 5ggen2 10gtj after rx eq450mui394muirjrms / rjpp ber=1e-1212.1mui / 177.9mui13.08mui / 192.3muisjout of cdr tracking range200mui170muichannelchannel -20.6db 5ghz j20 24” trace

33、is very closeusb 3.1 抖动容限的抖动容限的测测试要求试要求 base speccenter data rate with ssc: 9.975gb/sssc: center spread 33khz with 0.25%voltage swing tp1: 800mvpre-shoot tp1: 2.7dbde-emphasis tp1: -3.3dbrj: 1.308ps rmschannel -20.6db 5ghz j20 24” trace is veryclosecenter data rate with ssc: 4.9875gb/sssc: center sp

34、read 33khz with 0.25%voltage swing tp1: 750mvde-emphasis tp1: -3.0dbrj: 2.42ps rmschannel -20.6db 5ghz j20 24” trace is very close agilent technologies, 201432n4903b误码仪进行接收误码仪进行接收容容限测限测试试时时的的ssc设置设置1.upper data rate2.center data rate3.lower data rate4.deviation5.modulation frequency6.arbitrary modul

35、ation profiles or standard triangular. arbitrary profiles can be used to for lexmark or hershey kiss profiles or to use profiles captured from a real dut using a real time scope1235466 agilent technologies, 201433n5990a usb 3.0 接收容限自动测试软件接收容限自动测试软件lfps and highspeed tests with channel add setupconfi

36、gure device as host or device superspeed or highspeed standard, micro or tethered connection agilent technologies, 201434usb 3.1 中的接收一致性测试和抖动容中的接收一致性测试和抖动容限限测试测试 automated instrument control for: setup calibration compliance test characterization test support for debugging operator guidance sophisti

37、cated test reports controls j-bert,oscilloscope. supports full product characterization including transmitter measurements agilent technologies, 201435usb 3.1 设计和测试中的主要挑战设计和测试中的主要挑战transmitter ssc qualityssc ecnsinterference issuesloopback issuesdut needs custom sequencedut drops out easilycalibrati

38、on issuesinconsistentpoor sj/rj modautomation of calrx and tx equalizer tuningjitter tolerance failurescompliant sjpoor/wrong sjcompliant ssc profileintentional ssc stressnon-deterministic noisy ssc agilent technologies, 201436time& frequencyfrequencytime&frequencytime& frequencytime&

39、; frequencyagilent的的ena网网络络分分析析仪仪支支持的持的电电缆缆、连连接器接器测测试试标标准准time&frequencytime& frequencytime& frequencytime& frequencybroadr-reach*time&frequency100base-txcertified method of implementation (moi)compliance test solutions (i.e. certified mois) for ena option tdr are available / con

40、nectortransmitter/receiver (hot tdr)*time& frequency10gbase-ttime& frequency agilent technologies, 201437certified test centers using ena option tdrtest centers support ena option tdrena option tdr is used world wide by certified test centers of usb, hdmi, displayport, mhl, thunderbolt and sata.ena在全球在全球认证测试实认证测试实验验室室的的使使用情用情况况ena在全在全球球 认认 证证 测测 试试 实验实验 室的使室的使 用情况用情况 agilent technologies, 201438receiver testtransmitter testinterconnecttestdsox92504ainfiniium real timescopeswhwfixturedutn4903b j-berthigh-perf serial bertn5990a au