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SuperSpeed USB 3.0
Technology Overview and
Industry Update
Dan Fredal
Jeff Schuch
Senior Digital
Applications Engineers
Electro Rent Corp
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Agenda
USB Overview
Traces from protocol to electrical
Demo
Transmitter testing
Demo
Receiver testing
Demo
Agilent solutions
Agilent Digital Standards
Questions
Page 2
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USB Implementers Forum, inc (USB-IF)
USBIF Board Members
Intel, NEC, HP, Microsoft, ST-Ericsson, LSI
Agilent Active
Membership
Marketing
WG
Device
WG
CabCon
WG
Compliance
Committee
USB
Test
Specs
USB2/USB 3
Tools and
Test
Procedures
Test
House
Approval
ow
ne
r
resp
on
sib
le
owner
influences
Interop.
Workshop
Testing
influences
OTG
WG
Compliance
Review Board Test Spec
WG
Training and equipment
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USB Overview
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Worldwide shipment of USB-enabled Devices
Source: In-Stat, May 2011
USB installed base is 10+
billion units and growing at
3+ billion units a year
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Product Development
Initial Deployment
Broad Deployment
SuperSpeed USB Timeline
2011
Compliance Program/Industry Enabling Development
USB 3.0 Electrical Compliance Test Specification
0.9RC
Wksp:
HI
Jan
1.0 Test
Spec – Pending ECN updates
Wksp:
OR
April
Wksp:
OR
Jul
Wksp:
TPE
Sept
#78 #79 #77 #76
2012
#80 #81
Wksp:
OR
Nov
Wksp:
HI
Feb 6-10
#82 #83 #84 #85
(TBD)
Oregon
April
(TBD)
Taipei
Sept
Test Lab
Qualification –
Pending
resolution of USB
3.0 Gold Tree
(TBD)
Oregon
Nov
(TBD)
Oregon
July
SSIC spec
Work started
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What is different for USB 3.0
USB 2.0 High-Speed
480Mbps
NRZI, Half Duplex
4 signals
Dp, Dm, VCC, GND
Cable Lmax= 5meter
IconfigLP/FP = 100mA/500mA
Isuspend = 500uA
No SSC
TX SQ at Near End
No Host RX testing
USB 3.0 SuperSpeed
5 Gbps
8B/10B PRBS, Full Simplex
8 signals
4 USB2 , 4 SS Signals
Cable Lmax= 3 meters
IconfigLP/FP = 150mA/900mA
Isuspend = 2.5mA
SSC
TX at End of Channel (Far end)
RX Jitter tolerance
RX
Half Duplex TX
RX
TX
RX
Full Simplex
TX RX
TX
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Analyzing USB 2.0 and 3.0
Mass Storage traffic
Requires simultaneous capture
simultaneous USB 2.0 and 3.0
traffic to diagnose fallback
issues.
USB 3.0 cables are two completely
independent cables in one shielded
shell
The USB analyzer can capture all
traffic from device communication.
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Agilent USB Protocol Analyzer
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• Find & Fix the most complex problems
– Most advanced triggering on the market
– Deepest trace buffers on the market by far
– The only USB Jammer on the market!
• See your DUT, not the instrument
– Auto-detect instruments on LAN
– Quick first-screen display
– Fastest processing of “whole trace,” too
• E.g. histogram view of 18GB trace in 16 seconds
– Clean, intuitive GUI, with multiple viewing
options to ease migration
• Drill down into packet details, with “data sheet”
graphical views of bit fields, etc.
Synchronizing the USB analysis traces from
Protocol to Electrical
Agilent USB 3.0/2.0 Protocol Analyzer & Jammer
KEY SPECS
Simul. USB 3.0 & 2.0 capture
Up to 18GB trace buffer
4 sequencers, 16 states each
- 4 timers, 4 counters
Host I/F: GbE, PCIe X4
Cascadable with SAS/SATA
Configurable from $7k - $31k
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Flexible Trace Views, from High-Level to Detailed
Transaction
view Packet
Detail
view
Histogram
view
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High-Performance Histogram New Use Models
Histograms are
processed in under
1s/GB, allowing them
to be used more
frequently and in new
ways.
Quickly zoom in and
pan out of the trace.
Click on histogram
activity to immediately
sync to the other trace
views to gain additional
insight (transaction
view, spreadsheet,
protocol, etc.)
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• Can be used to create a variety of errors in a real OS environment that cannot necessarily be created by a generator
• Standalone unit (does not require analyzer)
• Example error types, events, packet modification, etc.
– LGOOD_n / LCRD_a out of order
– Corrupted ordered sets, LMPs, etc.
– CRC-5/16/32 errors
– LBA out of range
– Link connect / disconnect
– Power up / down (bus powered devices only)
– Missing or corrupt frames
– BOT or UAS Sense IU / Response IU errors
• The jammer can inject errors, modify or delete packets, or even turn off Vbus and turn it back on again
USB 3.0 Jammer
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USB Transmitter Testing
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SuperSpeed Measurement Requirements
Transmitter Compliance Testing:
Compliance will be measured at the end of the “compliance channel”
SMA termination for TX signals, phase matched SMA cable
Terminate link under test with high speed oscilloscope
Measure transmitted waveform with high speed oscilloscope
Use compliance pattern
1M UI of data
Compute:
eye diagram,
Rj from CP1
Dj, Tj@10^-12 BER from CP0
average data rate,
rise/fall time,
Test requirement for SSC Slew Rate
Test LFPS signaling
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Economy Scopes
InfiniiVision Series
Infiniium Series
Handheld
U1600A
Series
USB
U2700
Series
DSO 1000
Series
InfiniiVision
DSO 5000
Series
InfiniiVision
MSO/DSO
6000 Series
InfiniiVision
MSO/DSO
7000 Series
Infiniium
MSO/DSO
9000 Series
Infiniium
90000
Series
Infiniium
86100D
DCA-X
Series
Infiniium
90000-X
Series
5.2%12.8%
0.0%2.0%4.0%
6.0%
8.0%10.0%12.0%14.0%
Oscilloscope market
Agilent Technologies
Oscilloscope Market Growth5 Year CAGR
Source: PRIME DATA (2003-2008)
Fastest growing
oscilloscope
manufacturer
Page 17
Agilent Scope Portfolio
Infiniium
90000-Q
Series
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U7243A USB 3.0 TX Compliance Application
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Transmitter Tests
TX tests:
•LFPS (Near end)
•SSC (Near end)
•TX (Far End: TP1)
•Eye Pattern
•Tj, Rj, Dj
•Amplitude
“Embedded channel”
automatically tested
using Agilent U7243A
compliance software
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PING LFPS
Toggles CMM
CP0
Dj
CP1
Rj
TX Testing Requirements: Polling.LFPS to
compliance mode
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Toggling USB 3.0 TX test modes
•Connect Aux Out to
DUT SSRX+ to toggle
test modes
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Transmitter test requirements
(TX Far End)
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Tx testing emulated through s-parameters
Page 23
Embed Channel File
“DEVICE_3MCABLE.s4p”
Validation with InfiniiSim of
DSA91304A
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Transmitter testing uses
embedded compliance
channel
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USB 3.0 Technical Review
. 2009
USB 3.0 Test fixture
Key Features:
– Industries first and most feature complete
– SMA edge launch terminations
– SS A and SS B for host, device or cross hub testing
– Connect power supply or USB 2.0 port to pass through section to provide power to bus
powered USB 3.0 products for ease of testing
– SMA breakouts for cross talk measurements of USB 2.0 to USB 3.0 or vice versa
– RX connections through JBert ISI board allows compliance channel emulation for pre-
testing
– Accurate fixture de-embed and compliance channel embedding is performed with VNA s-
parameter characterization and Agilent InfiniiSim toolset.
25
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TX Compliance Pitfalls
Page 26
•SSC modulation
•SSC deviation
•High Rj
(flicker Jitter)
•Poor de-emphasis
•Cause eye
failure at end of
channel
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USB Receiver Testing
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Turn on loopback by sending LFPS and required training sequences
The receiver stress pattern is BDAT with SKPs inserted as described in the
standard.
The pattern checker receives the looped stress pattern BDAT and
recognizes bit errors
After sufficient test time the error counter of the pattern checker is read
Pattern Generator: J-BERT, ParBERT
…stress pattern…training sequences…LFPS
stress pattern…
.
Pattern Generator
1. 2.
Pattern Checker
3. Error
Counter
Receiver Test Procedure External Error Counter
Pattern Checker: USB Protocol Analyzer; Ellisys USB
Explorer and NOW JBERTB SER
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Typical SuperSpeed Link Turn-on Sequence
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RX Compliance Pitfalls
•Loopback issues • Dut needs custom sequence
• DUT drops out easily
•Calibration issues • Inconsistent
• Poor Sj/Rj mod
• Automation of Cal
•SSC deviation
•invalid de-emphasis • Great impact on TJ
• Jitter tolerance failures • 10MHz, 20MHz, 33MHz
Compliant SJ
Poor/wrong SJ
Compliant SSC Profile
Intentional SSC Stress
Non-deterministic noisy SSC
Compliant De-emphasis
Non-compliant Overshoot
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Automated instrument
control for:
• Setup calibration
• Compliance test
• Characterization test
• Support for debugging
Operator guidance
Sophisticated test
reports
Supports full product characterization including transmitter measurements
N5990A Test Automation Software
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Receiver Test Transmitter Test
Interconnect
Test
DSOX90000A
Infiniium
real time scope
Agilent’s USB 3.0 – Total Solution
SW
HW
Fixture
DUT
N4903B J-BERT
High-Perf
Serial BERT
N5990A Automatic
SW for USB
compliance
E5071C Option TDR
ENA Network Analyzer
U7242A
Test Fixture
U7243A USB
Compliance Test
Software
U7242A
USB 3.0
Test Fixture
N8805A USB3.0
Protocol decode &
triggering SW
DSO91304A
Infiniium
real time scope
or
Bit-USB-
CBL-0001
from BitifEye
Tx Rx
Tx
De-emph
N4916A or
N4916B or
N4903B-002
with
USB3ET
from
USB-IF Tx
Rx Cable
Signal
Condi-
tioning
Protocol
Test (link/transaction
layers)
U4611A/B
USB 3\2\1.1
Analyzer
U4612A
Jammer
Rx
Tx
Rx
Tx
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Same Setup Supports Multiple Standards
J-BERT, oscilloscope and test automation software also
cover
• PCI Express 1.1, 2.0
• SATA 1.5, 3, and 6Gb/s
• DisplayPort 1.1
Note: Additional applications may require additional instruments and
accessories
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Agilent Digital Standards
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Agilent Digital Standards Program
• Our solutions are driven 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)
• Mobile Industry Processor Interface (MIPI) Alliance
• And many others
• We’re active in standards meetings, workshops, plugfests,
and seminars
.
• We get involved so you benefit with the right solutions when
you need them
Page 39
SuperSpeed USB
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We understand your future requirements,
because we help shape them
Jim Choate
USB-IF Compliance Committee
USB 3.0 Electrical Test Spec WG
Rick Eads
PCI-Sig Board
Member
Brian Fetz
DisplayPort Phy CTS Editor
VESA Board Member
Min-Jie Chong
SATA 6G / PHY / LOGO Contributor
SATA-IO Gold Suite Lead
The Agilent Infiniium Scopes team maintains
engagement in the top high tech standards
organizations
Perry Keller
JEDEC Board Member
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Questions?