Preview of Agilent ADS Channel Simulator Webcast

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Preview of webcast. Register at http://event.on24.com/r.htm?e=151461&s=1&k=45AAAF345F3B6FC01400112AD06ED046&partnerref=slideshare for full webcast (one hour)

Technology Entertainment & Humor

Signal Integrity Design Agilent EEsof EDA
Using
Fast Channel Simulation Colin Warwick
Signal Integrity Product Manager
and
Statistical Eye Diagrams July 22th, 2009

© 2009 Agilent Technologies, Inc.
1 July 22th, 2009

How To Optimize Tx, Channel, and Rx in a Large
Multi-dimensional Design Space?
XTalk1 Jitter

PRBS ∑ EQ

TX Jitter Channel Jitter RX

PRBS ∑ EQ ∑ EQ

Received
XTalkN Jitter Signal

PRBS ∑ EQ

• Optimization goal
– Lowest cost way of achieving 10−10 or 10−12 BER contour versus eye mask
• Need BER @ thousands of sets of settings in the design space
• Multi-million-bit SPICE-like simulations are prohibitively long
• Bit-by-bit fast channel simulation is better – million bits per minute
• Statistical channel simulation is even better – ultralow BER in a few seconds

© 2009 Agilent Technologies, Inc.
2 July 22th, 2009

Comparison of Techniques

Transient Channel Channel
(SPICE-like) Simulator, Simulator,
Simulator Bit-by-bit mode Statistical mode
Method Modified nodal Bit-by-bit Statistical
analysis of superposition of calculations
Kirchoff’s current step responses based on step
laws for every response
time step
Applicability Linear and non- LTI, any specific LTI, fixed, general
linear circuits bit pattern, bit pattern, fixed
adaptive eq. taps eq. taps
BER floor in one ~10-3 ~10-6 Arbitrarily low
minute simulation

© 2009 Agilent Technologies, Inc.
3 July 22th, 2009

Channel Simulator: Bit-by-bit mode

1) SPICE-like transient response of single bit: runs on existing schematic

2) Response of millions of bits per minute using signal processing techniques

Superposition

ISI

© 2009 Agilent Technologies, Inc.
4 July 22th, 2009

Channel Simulator: Statistical mode

1) SPICE-like transient response of single bit: runs on existing schematic

2) Statistical calculations including ISI, crosstalk, jitter specification, equalizers,
and encoding

© 2009 Agilent Technologies, Inc.
5 July 22th, 2009

Channel Simulator: Bit-by-bit and Statistical Modes
Integrate layout EyeDiff_Probe
EyeDiff
artwork into V+

ML2CTL_V
schematic V-

CLin1
4

1
Via1
2
TL1
3 Re f

S4P
SNP1 Metal-1 Via2
TL2
Dielectric-1 blah
Metal-2
Metal-i : T[i], COND[i], TYPE[i]
blah_1
Dielectric-i : ER[i], H[i], T AND[ i]
ModelType=MW
Subst1

© 2009 Agilent Technologies, Inc.
6 July 22th, 2009

Demo
youtube.com/watch?v=AZ8Kv8l4Fjc

© 2009 Agilent Technologies, Inc.
7 July 22th, 2009

Summary and Next Steps

• Explore a large design space quickly using statistical
channel simulation and optimization of BER contours
versus eye mask goals
• In-depth webcast: live July 29th, 2009 11AM PDT
http://event.on24.com/r.htm?e=151461&s=1&k=45AAAF345F3B6FC01400112AD06ED046
Google “Agilent channel simulator webcast”
• Application page:
http://www.agilent.com/find/signal-integrity
• Blog:
http://signal-integrity-tips.com
• Evaluate ADS 2009 Update 1:
http://www.agilent.com/find/eesof-ads2009-update1
– Early Access (beta) available now
– Product Shipment in September

© 2009 Agilent Technologies, Inc.
8 July 22th, 2009

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Preview of Agilent ADS Channel Simulator Webcast

1. Signal Integrity Design Agilent EEsof EDA Using Fast Channel Simulation Colin Warwick Signal Integrity Product Manager and Statistical Eye Diagrams July 22th, 2009 © 2009 Agilent Technologies, Inc. 1 July 22th, 2009

2. How To Optimize Tx, Channel, and Rx in a Large Multi-dimensional Design Space? XTalk1 Jitter PRBS ∑ EQ TX Jitter Channel Jitter RX PRBS ∑ EQ ∑ EQ Received XTalkN Jitter Signal PRBS ∑ EQ • Optimization goal – Lowest cost way of achieving 10−10 or 10−12 BER contour versus eye mask • Need BER @ thousands of sets of settings in the design space • Multi-million-bit SPICE-like simulations are prohibitively long • Bit-by-bit fast channel simulation is better – million bits per minute • Statistical channel simulation is even better – ultralow BER in a few seconds © 2009 Agilent Technologies, Inc. 2 July 22th, 2009

3. Comparison of Techniques Transient Channel Channel (SPICE-like) Simulator, Simulator, Simulator Bit-by-bit mode Statistical mode Method Modified nodal Bit-by-bit Statistical analysis of superposition of calculations Kirchoff’s current step responses based on step laws for every response time step Applicability Linear and non- LTI, any specific LTI, fixed, general linear circuits bit pattern, bit pattern, fixed adaptive eq. taps eq. taps BER floor in one ~10-3 ~10-6 Arbitrarily low minute simulation © 2009 Agilent Technologies, Inc. 3 July 22th, 2009

4. Channel Simulator: Bit-by-bit mode 1) SPICE-like transient response of single bit: runs on existing schematic 2) Response of millions of bits per minute using signal processing techniques Superposition ISI © 2009 Agilent Technologies, Inc. 4 July 22th, 2009

5. Channel Simulator: Statistical mode 1) SPICE-like transient response of single bit: runs on existing schematic 2) Statistical calculations including ISI, crosstalk, jitter specification, equalizers, and encoding © 2009 Agilent Technologies, Inc. 5 July 22th, 2009

6. Channel Simulator: Bit-by-bit and Statistical Modes Integrate layout EyeDiff_Probe EyeDiff artwork into V+ ML2CTL_V schematic V- CLin1 4 1 Via1 2 TL1 3 Re f S4P SNP1 Metal-1 Via2 TL2 Dielectric-1 blah Metal-2 Metal-i : T[i], COND[i], TYPE[i] blah_1 Dielectric-i : ER[i], H[i], T AND[ i] ModelType=MW Subst1 © 2009 Agilent Technologies, Inc. 6 July 22th, 2009

8. Summary and Next Steps • Explore a large design space quickly using statistical channel simulation and optimization of BER contours versus eye mask goals • In-depth webcast: live July 29th, 2009 11AM PDT http://event.on24.com/r.htm?e=151461&s=1&k=45AAAF345F3B6FC01400112AD06ED046 Google “Agilent channel simulator webcast” • Application page: http://www.agilent.com/find/signal-integrity • Blog: http://signal-integrity-tips.com • Evaluate ADS 2009 Update 1: http://www.agilent.com/find/eesof-ads2009-update1 – Early Access (beta) available now – Product Shipment in September © 2009 Agilent Technologies, Inc. 8 July 22th, 2009

Preview of Agilent ADS Channel Simulator Webcast

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