December 2022

Tutorial Updates

Modeling and simulation of high-speed I/O interfaces with XMODEL

This popular tutorial is now updated with channel crosstalk modeling, voltage-mode transmit equalizer, dither suppression in bang-bang CDRs, and new scripts for BER bathtub, JTRAN, and JTOL simulations.

Tip of the Month

Measuring the coverage of a finite-state machine (FSM) in SystemVerilog

Here is a simple SystemVerilog testbench that can measure the state and transition coverages of your FSM simulation.

Model of the Month

Modeling amplifiers with output voltage and slew rate limits

Check out this simple way of limiting the output voltage and slew rate using the new 'vlimit' and 'ilimit' primitives.

Primitive of the Month

ilimit

This primitive models a nonlinear resistor element which can keep the current flowing through the element within the specified limits.

Latest Issues

March 2026

EQCHECK, Adaptive Decision-Feedback Equalizer, and More

February 2026

XMODEL at DVCon US, Introducing EQCHECK, and More

January 2026

Generating Random Step Sequences for Stress-Testing, Measuring Single-Bit Responses, and More

December 2025

Season's Greetings, Checking a Clocked Comparator's Correct Output, and More

November 2025

Checking the Settling of an Analog Signal, Handling Inherited Nets with Legacy SPICE Netlisters, and More