System level Validation of Improved IO Buffer Behavioral Modeling Methodology Based on IBIS

Abstract

System level simulation and validation of a new macromodeling methodology based on IBIS (Input/Output Buffer Information Specification) models is presented. Enhancements of the black-box techniques discussed in [1] are discussed. The proposed macromodel is circuit based and can be customized by model makers or users. The new macromodel produces models that can be simulated accurately for Simultaneous Switching Noise (SSN). To demonstrate the solution, a CMOS voltage-mode driver circuit and a MICRON DDR2 driver are simulated using real life package models and compared with equivalent circuits created with IBIS models of the same drivers.