Xilinx Virtex-5 FPGA RocketIO GTP Transceiver IBIS-AMI Signal Integrity Simulation Kit User Manual
Virtex-5 FPGA RocketIO
GTP Transceiver IBIS-AMI
Signal Integrity Simulation
Kit User Guide
for SiSoft Quantum Channel Designer
UG587 (v1.1) June 21, 2012
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Revision History
The following table shows the revision history for this document.
Date Version Revision
03/02/10 1.0 Initial Xilinx release. The SIS Kit version for this release is 2.2.
06/21/12 1.1 Updated the Notice of Disclaimer. Changed the SIS Kit’s accessibility from restricted to
public. Updated Ta bl e 1 -1.
Virtex-5 FPGA GTP Transceiver SIS Kit (IBIS-AMI) www.xilinx.com UG587 (v1.1) June 21, 2012
Table of Contents
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Preface: About This Guide
Guide Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Chapter 1: Virtex-5 FPGA GTP Transceiver IBIS-AMI SIS Kit
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Release Notes for the GTP Transceiver SIS Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Installation and Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Downloading the SIS Kit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Unpacking the Kit Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Creating a New Project from the Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Kit Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Schematic Sets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Transfer Nets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Transfer Net Properties. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Transfer Net Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
SiSoft Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
IBIS Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
IBIS-AMI Files. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
IBIS-AMI Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Package Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Channel Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Simulation Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Clock Domains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Bit Sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Validation Errors/Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
IBIS-AMI Model Control Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Getting Started. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Appendix A: HSPICE and Quantum Channel Designer/IBIS-AMI
Correlation Results
Transmitter Correlation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Correlation Methodology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Correlation Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Matched (100 wline) Case Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Matched (50W and 150 wline) Case Results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Receiver Correlation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Correlation Methodology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Correlation Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
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About This Guide
This signal integrity simulation kit provides a simulation environment for users to
evaluate their channel designs with the Virtex®-5 FPGA RocketIO™ GTP transceivers.
This document explains how to use the examples provided in the design kit and helps
users modify them for their own needs.
Guide Contents
This manual contains the following chapters:
• Chapter 1, Virtex-5 FPGA GTP Transceiver IBIS-AMI SIS Kit, explains how to install,
configure, and use SiSoft Quantum Channel Designer to simulate Virtex-5 FPGA
RocketIO transceivers.
• Appendix A, HSPICE and Quantum Channel Designer/IBIS-AMI Correlation
Results, explains how the correlation results were derived and displays results.
Preface
Additional Resources
To find additional documentation, see the Xilinx website at:
http://www.xilinx.com/literature
To search the Answer Database of silicon, software, and IP questions and answers, or to
create a technical support WebCase, see the Xilinx website at:
http://www.xilinx.com/support
.
.
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Preface: About This Guide
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Virtex-5 FPGA GTP Transceiver
IBIS-AMI SIS Kit
Introduction
This document provides a complete overview of the Virtex®-5 FPGA RocketIO™ GTP
Transceiver IBIS-AMI Signal Integrity Simulation (SIS) Kit, including block diagrams,
system configurations, transfer nets, and libraries. It explains how to install the SIS kit and
the associated files, gives an overview of the SIS kit file hierarchy, and describes the steps
for getting started with simulations.
The Quantum Channel Designer from Signal Integrity Software, Inc. (SiSoft) was used to
simulate the models and example channels. With SiSoft’s Quantum Channel Designer
(QCD), designers can quickly implement and validate high-speed serializer/deserializer
interfaces for bit error rate (BER) and eye-mask compliance. Appendix A, HSPICE and
Quantum Channel Designer/IBIS-AMI Correlation Results, describes how the Quantum
Channel Designer IBIS-AMI simulation results were correlated with the HSPICE
simulations. Results are documented with waveform plots.
Chapter 1
Additional information on the models, ports, and options can be obtained from UG19
Virtex-5 FPGA RocketIO GTP Transceiver User Guide. Additional information regarding the
Quantum Channel Designer can be obtained from the SiSoft Quantum Channel Designer
User Guide (provided with the SIS Kit installation). Questions regarding Quantum Channel
Designer should be directed to SiSoft.
Release Notes for the GTP Transceiver SIS Kit
Tab le 1-1 shows the UG587 document version and the associated GTP Transceiver SIS Kit
version.
Table 1-1: Document and SIS Kit Version Correlation
UG587 Version SIS Kit Version
1.0 2.2
1.1 2.2
The TX and RX models are created to be used primarily in an AC-coupled environment.
6,
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Installation and Requirements
Installation and Requirements
Downloading the SIS Kit
The Virtex-5 FPGA GTP Transceiver IBIS-AMI SIS Kit can be downloaded at:
http://www.xilinx.com/support/download/index.htm
Requirements
• SiSoft Quantum Channel Designer 2009.08 or later
• Microsoft Windows XP Professional, version 2002, Service Pack 2
Unpacking the Kit Files
This kit is supplied as a SiSoft .klp file, which is installed using Quantum Channel
Designer. To install this kit:
1. Ensure the system environment variable QCD_KIT_PATH is defined and pointing to a
writable directory where the kit library is to be installed.
2. From the File menu, select Design Kits, then Install …
3. Browse to the .klp file provided and click Select.
4. Select Install to unpack the kit into the library directory.
Creating a New Project from the Kit
To create a new kit:
1. Select File Design Kits New Project From Kit ...
2. Ensure a writable directory is used for the project.
3. Select the Xilinx kit name on the left.
4. Click Create Project to create the project from the kit.
Kit Overview
This SIS Kit includes models and interconnect data for a sample GTP transceiver interface.
The transmitter and receiver models are provided as IBIS-AMI models. Each model
contains an analog model (used for network characterization) and a corresponding
algorithmic model (used for statistical and time-domain analysis). The receiver model
includes the Virtex-5 FPGA GTP peaking filter. S-parameter data is included for the Xilinx
package (transmit and receive signals), along with sample channel data for 22-inch,
36-inch, and 56-inch
data for their own channels and run link performance simulations
• Project name: v5_gtp_sis_kit_2_2_beta_qcd
• Interface name: GTP
• Target operating frequency: 3.75 Gb/s (266 ps)
Schematic Sets
Only one schematic set has been defined in this interface: set1.
8 www.xilinx.com Virtex-5 FPGA GTP Transceiver SIS Kit (IBIS-AMI)
links. The kit is set up so designers can quickly import S-parameter
.
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Transfe r N e t s
Transfer nets are the primary net class data structure in Quantum Channel Designer. They
maintain continuity between pre- and post-layout simulations and can be reused in
multiple ways. Three transfer nets, contained in this kit, consist of two designators, each
with a single differential pin-pair:
• T1_TX_ONLY
• T2_RX_ONLY
• T3_XILINX_CHANNEL
• T4_XTALK_0_AGGRESSOR
• T5_XTALK_3_AGGRESSOR
Note:
User Guide.
Transfer Net Properties
Tab le 1- 2 lists the properties for each transfer net in the kit.
Table 1-2: Design Kit Transfer Net Properties
Kit Overview
For more information regarding transfer nets, refer to the SiSoft Quantum Channel Designer
Transfer Net Type Encoding Description
T1_TX_ONLY SerDes None
T2_RX_ONLY SerDes None
T3_XILINX_CHANNEL SerDes None
T4_XTALK_0_AGGRESSOR SerDes None
T5_XTALK_3_AGGRESSOR SerDes None
GTP transmitter with package into ideal
load
Ideal transmitter into GTP receiver
model
Base Transfer Net to be used for setup of
an actual Xilinx channel simulation
An example of a crosstalk channel with
no aggressors
An example of a crosstalk channel with
aggressors
Transfer Net Usage
The transfer nets in this kit are intended to be used as such:
• T1_TX_ONLY: This transfer net has the GTP transmitter and package driving an ideal
load. It is intended for measurement correlation of the standalone TX. The receiver
model should be replaced with a model of the scope input, and the 0.001 resistors
should be replaced with interconnect models for the test board and scope cable used.
• T2_RX_ONLY: This transfer net has an ideal transmitter driving the GTP receiver
model with the Xilinx package. This transfer net used to evaluate a test setup driving
into the receiver IP. The transmitter model should be replaced with a model of the
stimulus equipment used, and the 0.001 resistors should be replaced with models of
the test board and cabling.
• T3_XILINX_CHANNEL: This transfer net contains the GTP transmitter, receiver,
package models, and sample Xilinx channel data. The sample channel model can be
replaced with an actual channel model (either as a single block of S parameters or as a
collection of individual schematic elements) to simulate the behavior of the Xilinx IP
with the channel.
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Kit Overview
Libraries
• T4_XTALK_0_AGGRESSOR: This transfer net contains the GTP transmitter, receiver,
package models, and sample crosstalk channel data. The sample channel model can
be replaced with an actual channel model (either as a single block of S parameters or
as a collection of individual schematic elements) to simulate the behavior of the Xilinx
IP with the channel. In this transfer net, the aggressors are quiet.
• T5_XTALK_3_AGGRESSOR: This transfer net contains the GTP transmitter, receiver,
package models, and sample crosstalk channel data. The sample channel model can
be replaced with an actual channel model (either as a single block of S parameters or
as a collection of individual schematic elements) to simulate the behavior of the Xilinx
IP with the channel. In this transfer net, the aggressors are active.
This kit consists of SiSoft parts, IBIS files, IBIS-AMI files and models, and package and
channel models.
SiSoft Parts
The SiSoft parts contained in the design kit are listed in Tab le 1 -3 along with their
associated IBIS models.
Table 1-3: SiSoft Parts
SiSoft Part IBIS Model IBIS Component
v5_gtp_serdes xilinx_v5_gtp.ibs v5_gtp_serdes
ideal ideal.ibs Ideal
IBIS Files
Tab le 1- 4 lists the IBIS files that are referenced from the SiSoft parts in this kit.
Table 1-4: IBIS Files
IBIS File File Revision Description
xilinx_v5_gtp.ibs 1.0 GTP transmitter
ideal.ibs 1.0 Ideal driver/receiver
IBIS-AMI Files
Tab le 1- 5 lists the IBIS-AMI files that are referenced from the IBIS files in this kit.
Table 1-5: IBIS-AMI Files
IBIS-AMI File Description
V5_GTP_AMI_Tx.ami Virtex-5 FPGA GTP TX model
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V5_GTP_AMI_Rx.ami Virtex-5 FPGA GTP RX model
Tx_Source.ami Ideal driver model
Rx_Probe.ami Ideal receiver model
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Kit Overview
IBIS-AMI Models
Tab le 1- 6 lists the IBIS-AMI models that are used in the IBIS files in this kit.
Table 1-6: IBIS-AMI Model
IBIS-AMI Model Executable IBIS-AMI File Description
V5_GTP_AMI_Tx V5_GTP_AMI_Tx.dll V5_GTP_AMI_Tx.ami Virtex-5 FPGA GTP TX AMI model
V5_GTP_AMI_Rx V5_GTP_AMI_Rx.dll V5_GTP_AMI_Rx.ami Virtex-5 FPGA GTP RX AMI model
Tx_Source SiSoft_AMI_Tx.dll Tx_Source.ami Ideal driver AMI model
Rx_Probe SiSoft_AMI_Rx.dll Rx_Probe.ami Ideal receiver AMI model
Package Models
The package models used in this kit are based on Xilinx S-parameter data. These models
provide typical case data and can be replaced by package models for specific packages and
applications. Tab le 1 -7 lists the package models and SPICE sub-circuits used in the kit.
Table 1-7: Kit Package Model Sub-Circuits
Package Model Filename Package Sub-Circuit Used to Model
pkg_model_v5_lxt_sxt_ff1136_typ.s4p.smod s_pkg_model_v5_lxt_sxt_ff1136_typ TX and RX package
pkg_model_v5_lxt_sxt_ff1738_typ.s4p.ports s_pkg_model_v5_lxt_sxt_ff1738_typ TX and RX package
Channel Models
This kit includes sample channel models for 22-inch, 36-inch, and 56-inch Xilinx and Tyco
backplane channels (Tab le 1 -8 ). These first three sets of S-parameter data are referenced
from a single wrapper file. The Tyco channels have their own wrapper files. This allows the
channel model to be defined as a variable and selected via a drop-down menu in the
Solution Space portion of the Quantum Channel Designer GUI.
Table 1-8: Kit Channel Model Sub-Circuits
Channel Model Filename Channel Sub-Circuit Channel Length
s_xilinx_22_inch 22 inches
Xilinx_Channel.smod
tyco_.s4p.smod s_tyco_4 16 inches
tyco_.s16p.smod s_tyco_16 16 inches
s_xilinx_36_inch 36 inches
s_xilinx_56_inch 56 inches
Simulation Environment
These conditions apply to the design kit:
• Operating frequency: 3.75 Gb/s
Data rate = 0.266 ns
• Interconnect
No variation modeled (typical case, S-parameter data)
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IBIS-AMI Model Control Parameters
Clock Domains
A number of pre-defined clock speeds are included in this kit:
• SerDes_1p25G = 800 ps
• SerDes_1p5G = 666 ps
• SerDes_2p5G = 400 ps
• SerDes_3p0G = 333 ps
• SerDes_3p125G = 320 ps
• SerDes_3p75G = 266 ps
Bit Sequences
This kit uses the default Quantum Channel Designer stimulus and pattern definitions.
Bit sequences can be edited by selecting Setup Bit Sequence from the Quantum
Channel Designer GUI.
Validation Errors/Warnings
This interface validates with zero errors and zero warnings.
IBIS-AMI Model Control Parameters
Tab le 1- 9 defines the GUI parameters that control the IBIS-AMI algorithmic models
included in this kit.
Table 1-9: Model Parameters
Parameter Description
TX Model Parameters
This parameter controls the output’s voltage swing. Allowable
settings are:
“000: 1100mV”
“001: 1050mV”
TX_Strength
(TXDIFFCTRL)
“010: 1000mV”
“011: 900mV”
“100: 800mV”
“101: 600mV”
“110: 400mV”
“111
: 0mV”
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Table 1-9: Model Parameters (Cont’d)
Parameter Description
This parameter controls the output signal’s equalization.
Allowable settings are:
“000: 0%”
“001: 3%”
TX_Equalization
(TXPREEMPHASIS)
RX Model Parameters
RX_Equalization
(RXEQMIX[1:0],
RXEQENB)
RX_Bias_Mode
(RCV_TERM_VTTRX,
RCV_TERM_MID,
RCV_TERM_GND,
AC_CAP_DIS)
Notes:
The TX parameters are based on TX_DIFF_BOOST = TRUE
“010: 4%”
“011: 10.5%”
“100: 18.5%”
“101: 28%”
“110: 39%”
“111: 52%”
This parameter controls the gain of the input peaking filter.
Allowable settings are:
“0: 50% Wideband, 50% High-Pass”
“1: 62.5% Wideband, 37.5% High-Pass”
“2: 75% Wideband, 25% High-Pass”
“3: 37.5% Wideband, 62.5% High-Pass”
“4: Equalization Off”
This parameter sets up the termination and internal bias.
Allowable configurations are:
“0: Internal AC cap disabled; VTT = 1.2V”
“1: Internal AC cap disabled; VTT = 0.8V”
“2: Internal AC cap enabled; VTT = 0V”
Getting Started
Getting Started
For a review of the kit, refer to the Virtex-5 FPGA GTP SiSoft IBIS-AMI QuickStart video
and other videos on the eLearning page of the SiSoft website:
http://www.sisoft.com
Note: To view the video, SiSoft eLearning accounts are required. Users can register on the website
for accounts.
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Getting Started
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Appendix A
HSPICE and Quantum Channel
Designer/IBIS-AMI Correlation Results
This appendix describes the correlation of the IBIS-AMI models for Virtex®-5 FPGA GTP
transceivers with the HSPICE models. Simulation results are presented for a range of
simulation cases and operating corners.
Transmitter Correlation
This section outlines the correlation methodology and gives a summary of correlation
results.
Correlation Methodology
The IBIS-AMI (analog and algorithmic) model was simulated into several different loads to
verify output voltage, edge rate, equalization, and reflection behavior. These loads
consisted of a 6-inch wline with three different impedances, terminated into an ideal
differential impedance of 100. Three differential wline impedances were used:
• 100 (ideal match)
•50 (overloaded driver)
• 150 (underloaded driver)
A comprehensive set of correlation results include:
• Eight power levels (0 mV, 400 mV, 600 mV, 800 mV, 900 mV, 1,000 mV, 1,050 mV and
1,100 mV)
• Eight equalization settings ranging from 0%–52% de-emphasis
• Three operating corners:
•Slow (SS)
• Typical (TT)
•Fast (FF)
• Three test conditions (50 , 100 , and 150 transmission lines)
A more comprehensive subset of correlation results include:
• Three power levels (400 mV, 800 mV, and 1,100 mV)
• Three equalization settings (0%, 18.5%, and 52% de-emphasis)
• Three operating corners:
•Slow (SS)
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Appendix A: HSPICE and Quantum Channel Designer/IBIS-AMI Correlation Results
UG587_aA_01_021810
-200.0
-100.0
0.0
100.0
200.0
18.0
18.50
17.50
17.0
16.50
16.0
15.50
.0
Time (ns)
Volts (mV)
Red = HSPICE Blue = QCD Strength = 6
• Typical (TT)
•Fast (FF)
• 100 ideal load
The correlation required 8 8 3 1+3 3 3 3 = 273 different sets of simulation
data. A representative subset of the complete data is presented in Correlation Results.
Correlation Results
This section summarizes the simulation results. Results for the matched (100 wline) cases
are presented in Figure A-1, page 16 through Figure A-6, page 19. Results for the
mismatched (50 and 150) wline cases are presented in Figure A-7, page 20 through
Figure A-10, page 21.
Simulation waveforms from the HSPICE transistor level model are shown in red.
Simulation results using Quantum Channel Designer and the Virtex-5 FPGA GTP TX
IBIS-AMI model are shown in blue. Blue waveforms are always on top. When the red
waveform is not visible, it is hidden by the IBIS-AMI waveform (i.e., the match is good).
In all cases, the models correlate with an IBIS figure of merit of 98% or better.
Matched (100 wline) Case Results
Figure A-1 through Figure A-6 show the results for the matched (100 wline) cases. These
cases verify that the combination of the IBIS-AMI analog and algorithmic models provides
the correct output voltage, slew rate, voltage scaling, and equalization behavior (this
includes the advanced signal processing performed by the algorithmic model to match
HSPICE results).
X-Ref Target - Figure A-1
Figure A-1: 100 wline with Ideal Load, 400 mV Output Setting, FF, BC, 3 EQ
16 www.xilinx.com Virtex-5 FPGA GTP Transceiver SIS Kit (IBIS-AMI)
Settings
UG587 (v1.1) June 21, 2012
Transmitter Correlation
UG587_aA_02_021810
18.0
18.50
17.50
17.0
16.50
16.0
15.50
.0
Time (ns)
Volts (mV)
Red = HSPICE Blue = QCD Strength = 6
-200.0
-100.0
0.0
100.0
200.0
UG587_aA_03_021810
-150.0
-100.0
-50.0
0.0
100.0
50.0
150.0
18.0
18.50
17.50
17.0
16.50
16.0
15.50
.0
Time (ns)
Volts (mV)
Red = HSPICE Blue = QCD Strength = 6
X-Ref Target - Figure A-2
Figure A-2: 100 wline with Ideal Load, 400 mV Output Setting, TT, TC, 3 EQ
Settings
X-Ref Target - Figure A-3
Figure A-3: 100 wline, 400 mV Output Setting, SS, WC, 3 EQ Settings
Virtex-5 FPGA GTP Transceiver SIS Kit (IBIS-AMI) www.xilinx.com 17
UG587 (v1.1) June 21, 2012
Appendix A: HSPICE and Quantum Channel Designer/IBIS-AMI Correlation Results
UG587_aA_04_021810
-0.60
-0.40
-0.20
0.0
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0.20
0.60
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Red = HSPICE Blue = QCD Strength = 0
UG587_aA_05_021810
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17.0
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.0
Time (ns)
Volts (mV)
Red = HSPICE Blue = QCD Strength = 0
X-Ref Target - Figure A-4
Figure A-4: 100 wline, 1,100 mV Output Setting, FF, BC, 3 EQ Settings
X-Ref Target - Figure A-5
Figure A-5: 100 wline, 1,100 mV Output Setting, TT, TC, 3 EQ Settings
18 www.xilinx.com Virtex-5 FPGA GTP Transceiver SIS Kit (IBIS-AMI)
UG587 (v1.1) June 21, 2012
Transmitter Correlation
UG587_aA_06_021810
-0.60
-0.40
-0.20
0.0
0.40
0.20
0.60
18.0
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17.50
17.0
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.0
Time (ns)
Volts (mV)
Red = HSPICE Blue = QCD Strength = 0
X-Ref Target - Figure A-6
Figure A-6: 100 wline, 1,100 mV Output Setting, SS, WC, 3 EQ Setting
Virtex-5 FPGA GTP Transceiver SIS Kit (IBIS-AMI) www.xilinx.com 19
UG587 (v1.1) June 21, 2012
Appendix A: HSPICE and Quantum Channel Designer/IBIS-AMI Correlation Results
UG587_aA_07_021810
18.0
18.50
17.50
17.0
16.50
16.0
15.50
.0
Time (ns)
Volts (mV)
Red = HSPICE Blue = QCD Strength = 6
-200.0
-100.0
-50.0
-150.0
0.0
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100.0
200.0
UG587_aA_08_021810
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18.50
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.0
Time (ns)
Volts (mV)
Red = HSPICE Blue = QCD Strength = 6
-200.0
-100.0
0.0
100.0
200.0
Matched (50 and 150 wline) Case Results
Figure A-7 through Figure A-10 show the results for the mismatched (50 and 150) wline
cases. These cases verify the behavior of the models under conditions with multiple
reflections.
X-Ref Target - Figure A-7
Figure A-7: 50 wline with Ideal Load, 400 mV Output Setting, TT, TC, 3 EQ Settings
X-Ref Target - Figure A-8
Figure A-8: 150 wline, 400 mV Output Setting, TT, TC, 3 EQ Settings
20 www.xilinx.com Virtex-5 FPGA GTP Transceiver SIS Kit (IBIS-AMI)
UG587 (v1.1) June 21, 2012
X-Ref Target - Figure A-9
UG587_aA_09_021810
18.0
18.50
17.50
17.0
16.50
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.0
Time (ns)
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Red = HSPICE Blue = QCD Strength = 0
-0.40
-0.60
-0.20
0.0
0.20
0.40
0.60
UG587_aA_10_021810
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Time (ns)
Volts (mV)
Red = HSPICE Blue = QCD Strength = 0
-0.40
-0.60
-0.20
0.0
0.20
0.40
0.60
X-Ref Target - Figure A-10
Transmitter Correlation
Figure A-9: 50 wline, 1100 mV Output Setting, TT, TC, 3 EQ Settings
Figure A-10: 150 wline, 1100 mV Output Setting, TT, TC, 3 EQ Settings
Virtex-5 FPGA GTP Transceiver SIS Kit (IBIS-AMI) www.xilinx.com 21
UG587 (v1.1) June 21, 2012
Appendix A: HSPICE and Quantum Channel Designer/IBIS-AMI Correlation Results
Receiver Correlation
This section outlines the correlation methodology and summarizes the correlation results.
Correlation Methodology
The IBIS-AMI (analog + algorithmic) model was correlated when driven by an ideal
voltage source with four different voltage swings. The three differential wline impedances
used were:
• 100 (ideal match)
•50
• 150
A comprehensive set of correlation results include:
• All three input bias and termination mode settings
• All five receive equalization settings
• Three operating corners (SS, TT, FF)
• Four different voltage levels
A more comprehensive set of correlation results include:
• All three input bias and termination mode settings
• All five receive equalization settings
• Three operating corners (SS, TT, FF)
• 100 ideal source driving at five different output voltage levels
• Three test conditions (50 , 100 , and 150 transmission lines)
This correlation required over 2,000 different sets of simulation data.
Correlation Results
This section summarizes the simulation results.
Simulation waveforms from the HSPICE transistor-level model are presented in blue;
simulation results using Quantum Channel Designer and the Virtex-5 FPGA GTP IBISAMI RX model are presented in red. Red waveforms are always on top. If the blue
waveform is not visible, it is hidden by the IBIS-AMI waveform (i.e., the match is good).
The colors have been reversed from the TX model correlation plots.
For all cases, the models correlate with an IBIS figure of merit of 96% or better.
22 www.xilinx.com Virtex-5 FPGA GTP Transceiver SIS Kit (IBIS-AMI)
UG587 (v1.1) June 21, 2012
Receiver Correlation
UG587_aA_11_021810
18.0
19.0
17.0
16.0
Time (ns)
Volts (mV)
Red = QCD Blue = HSPICE
0.0
100.0
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300.0
400.0
-100.0
-200.0
UG587_aA_12_021810
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Time (ns)
Volts (mV)
Red = QCD Blue = HSPICE
0.0
100.0
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400.0
-100.0
-200.0
X-Ref Target - Figure A-11
Figure A-11: Ideal Voltage Source, 4 Input Voltage Swings, Bias Mode = 0, Receive
Equalization = 0, TT
X-Ref Target - Figure A-12
Figure A-12: Ideal Voltage Source, 4 Input Voltage Swings, Bias Mode = 0, Receive
Virtex-5 FPGA GTP Transceiver SIS Kit (IBIS-AMI) www.xilinx.com 23
UG587 (v1.1) June 21, 2012
Equalization = 1, TT
Appendix A: HSPICE and Quantum Channel Designer/IBIS-AMI Correlation Results
UG587_aA_13_021810
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Red = QCD Blue = HSPICE
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100.0
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300.0
400.0
-100.0
-200.0
-300.0
UG587_aA_14_021810
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Time (ns)
Volts (mV)
Red = QCD Blue = HSPICE
0.0
100.0
200.0
300.0
400.0
-100.0
X-Ref Target - Figure A-13
Figure A-13: Ideal Voltage Source, 4 Input Voltage Swings, Bias Mode = 0, Receive
Equalization = 2, TT
X-Ref Target - Figure A-14
Figure A-14: Ideal Voltage Source, 4 Input Voltage Swings, Bias Mode = 0, Receive
24 www.xilinx.com Virtex-5 FPGA GTP Transceiver SIS Kit (IBIS-AMI)
Equalization = 3, TT
UG587 (v1.1) June 21, 2012
Receiver Correlation
UG587_aA_15_021810
18.0
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Time (ns)
Volts (mV)
Red = QCD Blue = HSPICE
100.0
-100.0
-200.0
-300.0
-400.0
0.0
200.0
300.0
400.0
UG587_aA_16_021810
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Time (ns)
Volts (mV)
Red = QCD Blue = HSPICE
100.0
-100.0
-200.0
0.0
200.0
300.0
400.0
X-Ref Target - Figure A-15
Figure A-15: Ideal Voltage Source, 4 Input Voltage Swings, Bias Mode = 0, Receive
Equalization = 4, TT
X-Ref Target - Figure A-16
Figure A-16: Ideal Voltage Source, 4 Input Voltage Swings, Bias Mode = 0, Receive
Virtex-5 FPGA GTP Transceiver SIS Kit (IBIS-AMI) www.xilinx.com 25
UG587 (v1.1) June 21, 2012
Equalization = 0, FF
Appendix A: HSPICE and Quantum Channel Designer/IBIS-AMI Correlation Results
UG587_aA_17_021810
17.0
18.0
19.0
16.0
Time (ns)
Volts (mV)
Red = QCD Blue = HSPICE
100.0
-100.0
-200.0
0.0
200.0
300.0
400.0
UG587_aA_18_021810
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18.0
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15.0
Time (ns)
Volts (mV)
Red = QCD Blue = HSPICE
100.0
-100.0
-200.0
0.0
200.0
300.0
X-Ref Target - Figure A-17
Figure A-17: Ideal Voltage Source, 4 Input Voltage Swings, Bias Mode = 1, Receive
Equalization = 0, FF
X-Ref Target - Figure A-18
Figure A-18: Ideal Voltage Source, 4 Input Voltage Swings, Bias Mode = 2, Receive
26 www.xilinx.com Virtex-5 FPGA GTP Transceiver SIS Kit (IBIS-AMI)
Equalization = 0, FF
UG587 (v1.1) June 21, 2012
Receiver Correlation
UG587_aA_19_021810
17.0
17.50
17.50
18.0
18.50
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15.50
Time (ns)
Volts (mV)
Red = QCD Blue = HSPICE
100.0
-100.0
-200.0
0.0
200.0
300.0
400.0
UG587_aA_20_021810
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17.0
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20.0
16.0
Time (ns)
Volts (mV)
Red = QCD Blue = HSPICE
100.0
-100.0
-200.0
0.0
200.0
300.0
400.0
X-Ref Target - Figure A-19
Figure A-19: Ideal Voltage Source, 4 Input Voltage Swings, Bias Mode = 0, Receive
Equalization = 0, SS
X-Ref Target - Figure A-20
Figure A-20: Ideal Voltage Source, 4 Input Voltage Swings, Bias Mode = 1, Receive
Virtex-5 FPGA GTP Transceiver SIS Kit (IBIS-AMI) www.xilinx.com 27
UG587 (v1.1) June 21, 2012
Equalization = 0, SS
Appendix A: HSPICE and Quantum Channel Designer/IBIS-AMI Correlation Results
UG587_aA_21_021810
18.0
17.0
19.0
20.0
16.0
15.0
Time (ns)
Volts (mV)
Red = QCD Blue = HSPICE
100.0
0.0
-100.0
-200.0
200.0
X-Ref Target - Figure A-21
Figure A-21: Ideal Voltage Source, 4 Input Voltage Swings, Bias Mode = 2, Receive
Equalization = 0, SS
28 www.xilinx.com Virtex-5 FPGA GTP Transceiver SIS Kit (IBIS-AMI)
UG587 (v1.1) June 21, 2012
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