Receiver Correlation; Correlation Methodology; Correlation Results - Xilinx virtex-5 fpga User Manual

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:
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A comprehensive set of correlation results include:
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A more comprehensive set of correlation results include:
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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 IBIS-
AMI 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.
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100 (ideal match)
50
150
All three input bias and termination mode settings
All five receive equalization settings
Three operating corners (SS, TT, FF)
Four different voltage levels
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)
www.xilinx.com Virtex-5 FPGA GTP Transceiver SIS Kit (IBIS-AMI)
UG587 (v1.1) June 21, 2012