December 2024

Technical Paper

X-PIM: Fast Modeling and Validation Framework for Mixed-Signal Processing-in-Memory (PIM)

Researchers at Sungkyunkwan University used XMODEL to evaluate the system-level performance of transistor-level mixed-signal PIM circuits, achieving simulation speeds >300x faster than SPICE.

Q&A of the Month

How does XMODEL simulate nonlinear circuits and systems?

For fast and accurate event-driven simulation of analog circuits in SystemVerilog, XMODEL performs Laplace-domain computations. How, then, does it handle nonlinear circuits?

Tip of the Month

Shaping the phase noise of a clock with an arbitrary transfer function

You don't need a phase-locked loop (PLL) to filter the phase noise of an input clock. Using the 'clk_to_phase' and 'phase_to_clk' primitives, you can shape the phase noise with just a 'filter' primitive.

Primitive of the Month

clk_to_phase

This primitive extracts the phase value of an input clock.

Latest Issues

June 2026

Verifying NPUs with CIM, Optimizing Transmit Equalizers, and More

May 2026

Estimating Eye Openings and FFE/DFE Settings from Channel SBR

April 2026

Delay, Delay, Delay!

March 2026

EQCHECK, Adaptive Decision-Feedback Equalizer, and More

February 2026

XMODEL at DVCon US, Introducing EQCHECK, and More