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USB/WUSB Test 1
WUSB/USB Testing
Sept. 2008Page 1
USB 3.0: Facing the Challenges of SuperSpeed USB Product Development
USB 3.0: Facing the Challenges of SuperSpeed USB Product Development
Jim ChoateProduct Manager
Agilent Technologies
Copyright © 2008 Agilent Technologies
Page 2
WUSB/USB Testing
Sept. 2008
Presentation Goals
• Help you understand market need for USB 3.0
• Provide progress update and schedule of development activities
• Provide high level overview of USB 3.0 architecture
• Compare and contrast to USB 2.0: what has changed and what is the same
• Disclaimer: The material and content that describes specific details of the USB 3.0 specification belongs to the USB 3.0 Promoters. Agilent is not speaking or presenting on behalf of the USB 3.0 Promoters.
USB/WUSB Test 2
Page 3
WUSB/USB Testing
Sept. 2008
USB Market Overview
Physical Layer Overview
Cable/Connector challenges
Hubs
Frequently Asked Questions
Summary
Agenda
Page 4
WUSB/USB Testing
Sept. 2008
Hi-Speed USB (480 Mbps) is adequate for many products
Emerging applications will benefit from higher performance
Most other aspects of SuperSpeed USB will remain the same:
• Backward compatibility with USB 2.0• Maintain the extensive device driver infrastructure• Preserve USB ease of use expectations for Users
Background
One of the biggest challenges of USB 3.0Will be following the
amazing USB success
Market overview
USB/WUSB Test 3
Page 5
WUSB/USB Testing
Sept. 2008
USB 2.0 is now a performance bottleneck
High speed USB 2.0 = 480 Mbps signaling rate
– Real throughput is typically much less at around ½ this data rate (< 240Mbps) – Additional limitations due to IO performance limitations
• Approximately 35 MB/s maximum usable application data rate
Something faster is needed for large digital multi-media files
70 sec53.3 sec20 sec3.3 sec0.8 sec0.01 secUSB 3.0
13.9 min8.9 min3.3 min33 sec8.5 sec0.1 secUSB 2.0
9.3 hr5.9 hr2.2 hr22 min5.7 min5.3 secUSB 1.0
25 GB16 GB6 GB1 GB256 MB4 MB
HD-MovieUSB FlashSD-MovieUSB Flash256 FlashSong / Pic
Market overview
Page 6
WUSB/USB Testing
Sept. 2008
Removable Flash
Embedded FlashUSB Flash drives
MP3 Players (Flash)
Solid State Disk
Other
SuperSpeed USB Applications
Solid State/Flash Storage Market in 2010
Cameras, Phones, PDAs
44% External USB Storage
26%
SSD, mobile and external
18%
Market overview
USB/WUSB Test 4
Page 7
WUSB/USB Testing
Sept. 2008
Market Requirements Summary• Performance 10X USB2 - PHY signal rate of 5 Gbps
– data throughput > 200 MB/s
• Optimize for power efficiency
• Connector & Cable backward compatible with USB 2.0
• Protocol scalable to provide extension beyond 5Gbps
• Minimize SW impact
– Same Programming and Device models as USB 2.0
• Support Virtualization for Devices
Market overview
Page 8
WUSB/USB Testing
Sept. 2008
STDs Development
Product Development
0.9
Initial Deployment
Broad Deployment
SuperSpeed USB Timeline
2008 2009 2010 2011
USB 3.0 Specification CompleteCompliance Program/Industry Enabling Development
Market overview
USB 3.0 Developers Conference
USB/WUSB Test 5
Page 9
WUSB/USB Testing
Sept. 2008
USB 3.0 Industry Events Update
•USB 3.0 Promoter and Contributor Groups formed in 2007
•Industry review and Intel Developer Forum updates provided further information in first quarter of this year
•USB 3.0 Adopter participation begins when final spec is released in 2H’08• Joined by Adopter Agreement
•Compliance test requirements and enabling work beginning in July
•USB-IF will continue to manage Logos, test events and marketing/promotion
•USB 3.0 specification Rev 0.9 available to contributors.
•IDF demo of USB 3.0 cables and 5Gbps USB3.0 test chip
•IDF announcement of USB 3.0 developers conference in November timeframe.
http://www.usb.org/usb30
Market overview
Page 10
WUSB/USB Testing
Sept. 2008
What is different for USB 3.0•USB 2.0 High-Speed
480MbpsNRZI, Half Duplex
(1 bi-directional link)4 signals
Dp, DmVCC, GND
Cable Lmax= 5meterIconfigLP/FP = 100mA/500mANo SSC
•USB 3.0 SuperSpeed5 Gbps8B/10B PRBS, Full Simplex
(2 uni-directional links)8 signals
4 USB2 4 SS Signals
Cable Lmax= Spec Detail IconfigLP/FP = Spec DetailSSC
PHY overview
RX
Half DuplexTX
RX
TXRX
Full SimplexTX RX
TX
USB/WUSB Test 6
Page 11
WUSB/USB Testing
Sept. 2008
SuperSpeed Measurement Requirements•Compliance Testing:
Still being defined - will reflect many of the same requirements as PCI Express 2.0 (5GT/s) and SATA compliance testing
Compliance will be measured at the end of the “compliance channel”SMA termination for TX signals, phase matched SMA cableTerminate link under test with high speed oscilloscopeMeasure transmitted waveform with high speed oscilloscopeUse compliance pattern1M UI of dataCompute:
eye diagram, Rj, Dj, Tj@10^-12 BER, average data rate, rise/fall time,
SSTX+
SSTX-
PHY overview
Page 12
WUSB/USB Testing
Sept. 2008
Achieve Success at 5GT/s with Good designs and Agilent Tools
•Cable, connector and channel characterization and testing will be crucial to ensuring links are reliable and meet performance requirements
• TDR/TDT measurements will be essential to ensuring designs meet differential impedance targets
• VNA measurements will allow verification of return loss, insertion loss and near/far end cross talk requirements
•Those same S-parameter measurements will allow de-embed of fixture and cabling to characterized your transmitter design to package/die.
•Signal BW and channel length will result
in closed eye measurements
PHYPHY
Tx Channel
Measured EyeDe-embedded Eye
Equalization will also be needed to open eye at RX
PHY overview
USB/WUSB Test 7
Page 13
WUSB/USB Testing
Sept. 2008
Cable and Connector Challenges
•Deliver low cost
•Backward compatibility with USB 2.0
•Minimize connector types
•Meet performance rqts for 5Gbps
•Ease of use
•EMI/ESD
STD A
STD B
Micro
US
B2
UTP
VC
C/G
ND
Gnd
USB3 US
B3 S
TP
Gnd
USB3
USB2USB2
Vbus
Gnd Gnd
Cable/Connector Cost And complexity will increase
Cable/Conn Challenges
Page 14
WUSB/USB Testing
Sept. 2008
token data hndsh
OUT
host
token hndshdata
IN
device
USB
2
Tran
sact
ions
hndsh
datadata
hndsh
SSTX
SSRX
Host
SSTX
SSRX
Device
Bus turnaround times require 100s of bit times
Full Simplex bus topology greatly improves bus utilization
Link Layer Improvements
USB
3Tr
ansa
ctio
ns
Link/Protocol
USB/WUSB Test 8
Page 15
WUSB/USB Testing
Sept. 2008
HubsProvide fan out for USB3 connectivity
Two separate logical controllers
USB 2.0 Speeds
SuperSpeed
Upstream Connection supports both
Port Port
SS Hub
2.0 Dev
Port
Port Port
Port
3.0Dev
Port
2.0 Hub
Host
Hubs
Page 16
WUSB/USB Testing
Sept. 2008
Frequently Asked Questions
1. Does USB 3.0 define or require an optical connection?• NO, this was discussed during the initial phases of the investigation but
was ruled out due to cost. USB 3.0 will be wired only.
2. Is USB 3.0 going to be backward compatible with USB 2.0?• Yes, USB 3.0 requires that the host port is compatible with all USB 2.0
supported speeds: Low speed, Full speed and High speed.
3. Why does SuperSpeed require 4 new signals, SSTXP, SSTXN, SSRXP, SSRXN?
• Backwards compatibility requires support for Low and Full-Speed USB. These run at 3.3V signal levels which is not compatible with IO buffers designed to run at 5Gbps
4. How will users know that a USB port supports SuperSpeed?• USB 3.0 ports will be color-coded Blue to make them recognizable.
FAQ
USB/WUSB Test 9
Page 17
WUSB/USB Testing
Sept. 2008
SummarySuperSpeed USB addresses USB 2.0 performance bottleneck and retains attributes that made USB so successful
•Maintains backward compatibility
•10x performance
•Same programming and device models as USB 2.0
•Optimized for power efficiency
•Protocol scalable to 20Gb/s
USB 3.0 will deliver Performance and Power Efficiency
Agilent has the tools and expertise to help you validate your designs
Page 18
WUSB/USB Testing
Sept. 2008
presented by:
Jim Choate
Agilent Solutions for testing Certified Wireless USB based on WiMedia Technology
Agilent Solutions for testing Certified Wireless USB based on WiMedia Technology
Copyright © 2008 Agilent Technologies
USB/WUSB Test 10
Page 19
WUSB/USB Testing
Sept. 2008
Ultrawideband Technology
UWBUWB
Direct SpectrumDirect Spectrum MBMB--OFDMOFDM
RADARRADAR CommunicationsCommunications WiMediaWiMedia
Certified Wireless USBCertified Wireless USB
(USB(USB--IF)IF)BluetoothBluetooth
ExtensionsExtensions
IEEEIEEE
••Certified Wireless USB, based on WiMedia, MBCertified Wireless USB, based on WiMedia, MB--OFDM, UWBOFDM, UWB
Page 20
WUSB/USB Testing
Sept. 2008
Certified High Speed USB• Most successful interface standard, about 3 billion ports• 480 MBit data rates
Certified Wireless USB:• High speed USB replacement (480 MBits/s), Any other questions?• Based on WiMedia Alliance OFDM UWB Technology• Not just wireless USB (low speed mice and keyboards)• Low power, short range, high data rates
Bluetooth:• Headsets and automotive the current “killer” applications (1 MBit/s)• Bluetooth now planning to use WiMedia UWB for higher data rates• Years away
Connecting the last 5 meters
USB/WUSB Test 11
Page 21
WUSB/USB Testing
Sept. 2008
WiMedia UWB Platform
PAL: Protocol Adaptation Layer
WiMedia UWB Radio Platform
&/or
PAL PAL WLP
&/or &/or
PAL
IP
MAC & Policies
UWB PHY (MB-OFDM)
Page 22
WUSB/USB Testing
Sept. 2008
Companies Driving the IndustryWiMedia Promoters• Intel, HP, Kodak, Samsung, Sony, Microsoft
First Silicon Chip Providers• Alereon, Realtek, Staccato, Tzero, Wisair, Focus Enhancement
USB Industry Forum (Certified Wireless USB)• NEC, PHILIPS (NXP), Lucid Port, Microsoft, HP, Synopsis,
Leading Consumer Product Manufactures• Listed WiMedia membersAll current portable products with USB ports, a high percentage will consider Certified Wireless USB
USB/WUSB Test 12
Page 23
WUSB/USB Testing
Sept. 2008
Short Range Wireless enabled by UWB
PCs and Peripherals
External Hard Drives, CD/DVD, burners
Printers
MP3
Digital Cameras
Potential Certified Wireless USB products for 2006/2007
Page 24
WUSB/USB Testing
Sept. 2008
Why is Ultra Wideband so special?
f
3432MHz
3960MHz
4488MHz
Band#1
Band#2
Band#3
-41.3dBm
2400MHz
UWB is sometimes called an underlay technology, because it can transmit in the “noise floor” of narrow band signals.More BW translates to higher data rates even with simple modulation techniques
WLAN 30 MHz Occupied BW
528 MHz Occupied BW
USB/WUSB Test 13
Page 25
WUSB/USB Testing
Sept. 2008
UWB Bands and WW Regulations
Page 26
WUSB/USB Testing
Sept. 2008
WiMedia PHY: Time Domain
time
OFDM Symbol(IFFT Output)
ZPS(Zero-padded Suffix)
Symbol (312.5ns)
165NSYMTotal number of samples per symbol
37NZPSNumber of samples in zero-padded suffix
3.2 MHzFSYMSymbol Rate
128NFFTTotal number of subcarriers (FFT size)
242.42 nsTFFTIFFT and FFT period
70.08 nsTZPSZero-padded suffix duration in time
ValueParameterDescription
528MHzFsSampling Frequency
312.5 nsTSYMSymbol Interval
Packet/FrameSynchronization Sequence Frame Payload
30 sym for standard (24 + 6)18 sym for burst (12 + 6)
12 symPSDU
Channel EstimationSequence
Freq. 528 MHz
PacketPLCP Preamble PLCP Header
time
Amp.
6*(0, 1, …,37) sym
USB/WUSB Test 14
Page 27
WUSB/USB Testing
Sept. 2008
WiMedia PHY: Frequency DomainFCC, Unlicensed 3100 MHz – 10600 MHz, -41.3 dBm/1 MHz
528 MHz x 14 Bands
128 subcarriers,4.125 MHzspacing
12 QPSK PilotsQPSK, DCM 5 Guards5 Guards
528 MHz/Band
4.125 MHzSubcarrier Frequency Spacing6Number of null subcarriers
128NFFTTotal number of subcarriers (FFT size)
ValueParameterDescription
10Number of guard subcarriers12Number of pilot subcarriers
100Number of data subcarriers
528 MHzFsSampling Frequency
Logical Frequency Subcarriers -61 . . . . . . . . . . . . . . . . . . . .+610
Page 28
WUSB/USB Testing
Sept. 2008
WiMedia PHY: Time and Freq.
timeFreq.
3168 MHz
3696 MHz
4224 MHz
4752 MHz
…..Band #1
Band #2
Band #3
Symbol
BandGroup
1
TFC: Time Frequency Code
3333337222222611111152233114332211323123123213211
Band ID (Band number) for TFCTFC Number
TFI: Time-Frequency Interleaving
FFI: Fixed Frequency Interleaving
Data A
Data B
Data C
Data D
Data E
Data F
Data G
….. Time-Domain Spreading-Transmit same information over two symbols in TFI mode.- Spreading factor is 2.-Data A = Data B but over the different sub-bands.
copy
Frequency-Domain Spreading-Transmit same information
USB/WUSB Test 15
Page 29
WUSB/USB Testing
Sept. 2008
OFDM with Frequency Switching
Time
Frequency3432 MHz
3960 MHz
4488 MHz
3432 MHz
3960 MHz
4488 MHz
3432 MHz
3960 MHz
4488 MHz
1
Sym
b31
2.5 ns
128 subcarriers
528 MHz
TFC1 (Band Group 1)Frequency switch (3.1-4.9 GHz)
Band_ID1
Band_ID2
Band_ID3
Page 30
WUSB/USB Testing
Sept. 2008
Agilent E8267DPSG Series
Vector Signal Generator
Analogue IQ
UWB Signal Creation
UWB Signal Verification,EVM measurement
Advanced Design System
Signal Generation
DemodulationBase Band Modulation
Agilent N6030AArbitrary Waveform
Generator Agilent 89601AVSA Software
Agilent E4440APSA Series 26.5GHzSpectrum Analyzer
Agilent Infiniium DSO 91304A13GHz,40GSaOscilloscope
Spectrum Testing
New!!Version 9.0.Available NOW
DUT
Rx Tx
Simulation
Agilent N7619ASignal Studio for Multiband OFDM
UWB
Available NOW
Regulatory Test, FCC
Custom components on UWB Library support WiMedia Today
WiMedia Compliant LibraryShip date 9/15/06.
Agilent Transmitter“Golden Radio”
Agilent Receiver
WiMedia RF Measurement Solution
USB/WUSB Test 16
Page 31
WUSB/USB Testing
Sept. 2008
RF tests for WiMedia based radios
Example PHY Compliance Tests
• Transmit Center Frequency• Transmit Power Control• Power Spectral Density Mask• Adjacent Channel Power Ratio (ACPR)• Error Vector Magnitude (EVM)• Receiver Power Sensitivity• Receiver Frequency Offset Sensitivity
Page 32
WUSB/USB Testing
Sept. 2008
Random Noise
Phase Noise
AM/AM Distortion
AM/PM Distortion
Delay Distortion/ISI
Interference
Constellation DiagramConstellation Diagram
Radio Quality Measurements
USB/WUSB Test 17
Page 33
WUSB/USB Testing
Sept. 2008
Agilent E8267DAgilent E8267DPSG Series PSG Series
Vector Signal Vector Signal GeneratorGenerator
Agilent Infiniium Agilent Infiniium DSO 81304BDSO 81304B
13GHz, 40GSa13GHz, 40GSaOscilloscopeOscilloscope
89601A VSA Software89601A VSA Software
ADS2004AADS2004AUWB Design LibraryUWB Design Library
Agilent N6030A Agilent N6030A Wideband Wideband ArbArb
Agilent PSA E4440AAgilent PSA E4440A26.5 GHz Spectrum 26.5 GHz Spectrum
AnalyzerAnalyzer
Agilent N7619A Agilent N7619A Signal StudioSignal Studio
Agilent Transceiver Test Setup
Page 34
WUSB/USB Testing
Sept. 2008
WiMedia UWB Demodulation with 89601A
USB/WUSB Test 18
Page 35
WUSB/USB Testing
Sept. 2008
WiMedia UWB Demodulation with 89601A
Page 36
WUSB/USB Testing
Sept. 2008
Summary
• Certified Wireless USB is next mainstream standard for wireless connectivity.
• Certified Wireless USB is based on WiMedia PHY technology.
• Agilent builds Certified Wireless USB tests from years of RF measurement experience.
• Agilent solution provides a full test/analysis environment for PHY measurements on Certified Wireless USB transceivers.
• Agilent, Contributor member of WiMedia, USB-IF and Certified Wireless USB
• Agilent Provides “Gold Suite” testing at all USB-IF workshops.
USB/WUSB Test 19
Page 37
WUSB/USB Testing
Sept. 2008
Further Information
www.agilent.com/find/uwb
Ultra-Wideband Communication RF Measurements Application Note AN1488 5989-0506EN
Cutler, Robert “Effects of Physical Layer Impairments on OFDM Systems” RF Design, May, 2002 p. 36 www.rfdesign.com
IEEE 802.15.3 Home Page http://www.ieee802.org/15/
Agilent Application Note 1380-1 “RF Testing of Wireless LAN Products”
Agilent Application Note “Agilent PSA Series Swept and FFT Analysis”
www.usb.org/wusb/homewww.wimedia.org
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