Getting Through Production Test. Jeff Chang Staccato Communications

Transcription

1 Getting Through Production Test Jeff Chang Staccato Communications

2 Agenda Products Based on Certified Wireless USB The Design Cycle Technology Considerations Pre-Production Testing Certifications System Level Testing Production Test Stages Silicon Test Module Test ODM Test OEM Test Conclusion 2

3 Products Based on Certified Wireless USB

4 A Traditional Wired USB System USB Host Digital Camcorder USB Hub Webcam DSC Scanner Printer External Storage 4

5 Certified Wireless USB UNLEASHED! CWUSB Host Wire Adapter (HWA) CWUSB Device Wire Adapter (DWA) Digital Camcorder Webcam DSC Scanner Printer External Storage Native CWUSB Devices 5

6 Easy Upgrade: HWAs and DWAs CWUSB Host Wire Adapter (HWA) CWUSB Device Wire Adapter (DWA) Digital Camcorder Webcam DSC Scanner Printer External Storage Native CWUSB Devices 6

7 Certified Wireless USB Host Wire Adapter Wired USB 2.0 Dongle/Module Plugs into: External USB Port Internal USB Port Express Card Slot Mini Card, ½ Mini Card Slot antenna Hardware Requirements WiMedia PHY WiMedia MAC (supporting HWA) Wired USB 2.0 Device Interface (w/ appropriate endpoint configuration) Supporting components xtal, regulators, antenna, NVM, etc Form factor PCB and optional plastics Example: External Dongle Software Requirements HWA Driver (runs on host PC) Radio Control, Security, and BW Management MiniCard 7

8 DWA End-Product It behaves like a Wireless USB Hub Must work like a wired USB hub (i.e. supports all compliant wired USB devices) It can be external or integrated directly into existing products Hardware Requirements antenna WiMedia PHY WiMedia MAC (supporting DWA) Wired USB 2.0 Host Interface Supporting components xtal, regulators, antenna, NVM, etc Form factor PCB and optional plastics Software Requirements Example: 4-port DWA Hub DWA Driver (runs on host PC) No new firmware required in the legacy wired USB devices Two Key Design Issues/Decisions Power Source and Association 8

9 Native Certified Wireless USB End-Products CWUSB HWA Digital Camcorder CWUSB DWA Webcam External Storage DSC Scanner Printer Host side of the connection will transition from USB interface to other interfaces such as PCI or PCIe Device side of the connection will evolve from DWA to embedded DWA and then to native device support using I/O such as SDIO, SATA, etc 9

10 Typical Design Cycle Concept Technology Evaluation Production Architecture Certification/ Compliance Component Selection Test/QA Design Prototype 10

11 Technology Considerations

12 WiMedia UWB Platform: One Radio Multiple Protocols WiNET (IP peer-to-peer) Multiple Protocols WiMedia UWB Radio Platform 12 PAL PAL PAL WiMedia MAC WiMedia PHY (Multi-Band OFDM UWB) &/or &/or Protocol Adaptation Layer Medium Access Control PHYSICAL Layer

13 UWB Systems UWB systems will behave differently than narrowband systems Test considerations are an important part of the development process UWB Radiated Emmisions: Test Distance: Detector: RBW/VBW: Meas. Time: UWB BW: 1m RMS 1 MHz/3 MHz 1 ms > 500 MHz Note: Limit line takes into account the 1m measurement distance 13

14 Pre-Production Testing

15 WiMedia/CWUSB Relationship Compliance + Interoperability Registered PHY or Platform (MAC+PHY) Certified End-Product (i.e. MAC+PHY+WiNET) CWUSB Certification (through USB-IF) Other (BT?) Note: test specs and procedures to be finalized in August 15

16 Certified Wireless USB Compliance Program Goals High Quality Wireless USB Products Ensure A Positive User Experience Ensure Interoperability Among All Compliant Solutions Leverage USB 2.0 Compliance Program Extend and Reuse USBCV Reuse Compliance Devices (DWA Testing) Extend Compliance Device Infrastructure (HWA Testing) Full End Product Test Coverage Provided at Workshops 16

17 Certified Wireless USB Compliance Program ONLY WiMedia is supported by Certified Wireless USB CWUSB certification and compliance testing, and logo licensing will be done by USB Implementer s Forum WiMedia will provide test suite for USB-IF to test for PHY/MAC and WiMedia conformance Complete testing (including WiMedia) for wireless USB products will be Compliance Workshops (or independent test houses) Protocol testers available from 3 rd party vendors for early validation and lab de-bug (see back-up for more details) 17

18 Regulatory Testing Regulatory testing requirements will vary by region Leverage 3 rd party test labs for regulatory testing Silicon vendors will pre-certify their solutions as well 18

19 End-Product Certification Certified Wireless USB Compliance Workshop 3 rd Party Test House [1 Week, Free -$5k] must be a USB-IF member company to attend the free compliance workshops Design Complete Regulatory Production Certified Test House [2-4 Weeks, $10k-$25k] if applicable Self-Test/Submission, 3 rd Party Test House [1-2 Weeks, $250-$5k] 19

20 Production Test Stages

21 Various Stages of Production Test Vendor Implemented Customer/Vendor/Partner Implemented Silicon single or multi-chip Wafer test sort, Known Good Die (KGD) flow Silicon test Module FR4, Organic, Ceramic (LTCC) Module test Assembled module/silicon test ODM PCB assembled with chip(s)/module PCB test Assembled PCB/Module test OEM consumer product with embedded PCM assembly Integrated PCB Operational test Samples should be taken at all stages, and should be fully characterized to ensure compliance; software/firmware proven reliable MiniCard 21

22 Wafer/Silicon Production Test Performed by semiconductor vendor Wafer Test/Sort Tests performed: BIST, Scan, open-short, simple analog Test equipment: wafer probe Typical yields: 85-90% Next step: dice (packaging is optional) Silicon Test Tests performed: EVM, Output power, DC current, OOB emission, Noise Figure Perform pre-testing for FCC regulatory compliance Test equipment: production tester, possibly with ad-on modules (O-Scope or Comm Tester) Many vendors have announced ad-on modules and are being demoed today Typical yields: 95%+ Next step: deliver characterized parts to module vendor 22

23 Module Production Test Performed by Module vendor or Semiconductor Vendor Module Test (substrate test) Tests performed: DC, sample RF testing Typical yields: 90%+ Next step: module assembly Assembled Module Test Tests performed: Functional test DC, Power, Out-Of-Band Emissions Perform pre-testing for FCC regulatory compliance (filters added) Test equipment: production tester, possibly with ad-on modules (O-Scope or Comm Tester) Many vendors have announced ad-on modules and are being demoed today Typical yields: 98%+ Next step: deliver characterized packaged part to ODM 23

24 PCB Production Test Performed by ODM May be assisted by vendor or 3 rd party test partner PCB Test This activity is accelerated if based upon pre-tested reference designs Tests performed: DC test Typical yields: 99%+ Next step: final PCB assembly Assembled PCB Test Tests performed: basic functional test For some devices, regulatory and standards certification can be this stage Test equipment: custom or semi-custom Modified off-the-shelf testers Vendor-based designs Bed-of-nails, cabled test, golden-mode test Windows-based test interface Typical yields: 99%+ Next step: deliver characterized PCB design to OEM 24

25 End-Product Production Test Performed by OEM/ODM May be assisted by vendor or 3 rd party partner Typically a validation test only for OEM, ODM supports production test End-Product Test Tests performed: Operational tests Obtain regulatory and standards certification Test equipment: custom or semi-custom Typical yields: 99%+ Next step: ship to consumers (direct/retail) 25

26 Accelerating Time-to-Market and Reducing Design Risk Vendors supplying ODM/OEMs can: Provide complete solutions (hardware, software, reference designs) Silicon modules should have integrated Tx/Rx switch, crystal, UWB filter, RF matching, all passives Pre-certified hardware and software designs WiMedia registration and Certified Wireless USB compliance FCC certification WHQL compliance and Wired USB compliance (if applicable) Reduce risk & tests required by ODM/OEM by testing early and often Including random samplings for characterization Semiconductor companies should Work in parallel with module manufacturers and validate RF performance/compliance Provide production test guides to customers No radio calibration or configuration should be required in production 26

27 Conclusions Reduce risk, accelerate time-to-market ODM/OEM vendors should test early and often Including detailed characterization and pre-tests for certification Production test equipment vendors have emerged including: Traditional production tester suppliers Ad-on modular equipment such as O-Scopes and Comm Testers Protocol testing solutions Throughput is critical in production Test guides should distinguish tests conducted on every part versus tests required for more thorough random sampling Testing to ensure regulatory and standards compliance at various stages reduces risk to end-products 27

28 Backup Summary of Test Equipment

29 WiMedia UWB RF Test Equipment The WiMedia MB-OFDM UWB compliance software solutions allow design and validation engineers to easily see and understand the PHY signal details, find problems quickly, and validate the adherence to specs Agilent Technologies MB-OFDM WiMedia UWB analysis software runs on the Series vector signal analyzer LeCroy Corporation MB-OFDM WiMedia UWB analysis software runs on the Serial Data Analyzer and WaveMaster product lines Tektronix TDSUWB provides real-time measurement and analysis of Certified Wireless USB signals running on TDS6000C Series oscilloscopes 29

30 Protocol Test Equipment: WiMedia & Certified Wireless USB Protocol Analyzers assist developers in the design, debug, and characterization of silicon, devices, and software Catalyst Enterprises AirCom Series Ellisys Wireless USB Explorer LeCroy Corporation UWBTracer Traffic Generators help verify product and component reliability & compliance by generating reproducible traffic, timing and error scenarios Ellisys UWB Generator 320 (WiMedia-based Byte Level Frame Generator) 30

31 Resources Educational Material UWB University: UWB book: Whitepapers Agilent: &LANGUAGE_CODE=eng&CONTENT_KEY= %3acsg%3aind&ID= %3acsg%3aind&COUNTRY_CODE=US Tektronix: 31

32 Developers Conference 2006 Taipei, Taiwan