Powering Collaboration and Innovation
in the Simulation Design Flow
Agilent EEsof Design Forum 2010
Channel Simulator and AMI model support within ADS
Page 1
EEsof 2010
Contributors to this Paper
José Luis Pino, Agilent Technologies
Amolak Badesha, Agilent Technologies
Fangyi Rao, Agilent Technologies
Sanjeev Gupta, Agilent Technologies
Chad Morgan, Tyco Electronics
Special thanks to Chad Morgan, Tyco Electronics for
providing measured and simulated data for STRADA
Whisper and HM-Zd backplanes
Page 2
EEsof 2010
Agenda
• Introduction to Channel Simulation
• Brief introduction to IBIS AMI Model
• AMI model simulation in ADS2010
• AMI model Generation using System Vue
Page 3
EEsof 2010
Introduction to Serial Link
XTalk1
Jitter
∑
EQ
PRBS
TX
Jitter
PRBS
∑
EQ
Channel
Jitter
∑
EQ
RX
XTalkN
Jitter
∑
EQ
Received
Signal
PRBS
•Behavioral models
•Transistor level models
•IBIS AMI
Passive
Interconnect
•Behavioral models
•Transistor level models
•IBIS AMI
4
EEsof 2010
Comparison of Simulation Techniques in ADS 2009
Transient
Simulator
Channel Simulator: Channel Simulator:
Bit-by-bit mode
Statistical mode
Method
Modified nodal
Bit-by-bit
Statistical
analysis of Kirchoff’s superposition of step calculations based
current laws for
responses
on step response
every time step
Linear and non-
linear circuits
LTI, any specific bit LTI, fixed (general)
pattern, adaptive eq. bit pattern, fixed eq.
taps, IBIS AMI
taps
~10
-6
Arbitrarily low
Applicability
BER floor in one
~10
-3
minute
simulation
5
EEsof 2010
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