DCON26_PAPER_Track06_LinkDynamicModelingSimulationUsingIBIS-AMIFramework_69_28.pdf

1、 Link Dynamic Modeling and Simulation using IBIS-AMI Framework Chih-Hsun Chou,AMD chih- Zach Myers,AMD Geoff Zhang,AMD Abstract In high-speed serial link applications,IBIS-AMI model is widely used for assessing link margin.However,todays industry specification and the associated EDA tools only accom

2、modate static modeling and consequent simulation.Static solutions incorporate only fixed channel models,a single TX equalization setting,and some other given settings,ignoring that real systems could change due to temperature,humidity,and so on.For instance,temperature change will change both silico

3、n behavior and channel loss profiles,leading to some optimal settings under one condition becoming sub-optimal or even detrimental.In this paper,we propose a dynamic modeling methodology,still using the IBIS-AMI framework,to close the gap between simulation and reality.Our approach allows dynamicall

4、y changing channel characteristics as well as TX parameters during time-domain simulations.We will show how a time varying channel and time varying TX FIR coefficients impact the adaptation and link performance of a serial link.We further show how dynamically changing the TX FIR coefficients compens

5、ates for the time-varying channel.Using the proposed dynamic modeling methodology,SerDes designers and system architects can improve the global link margin under specific application conditions.Authors Biography Chih-Hsun Chou received the Ph.D.degree in electrical engineering from the Department of

6、 Electrical and Computer Engineering,University of California at Riverside.He is currently working in AMD.His previous research projects include system level design and architecture with a specific focus on PCIe acceleration platform for SmartNIC.His current research interests include SerDes link pe