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Futures Subcommittee

Futures Subcommittee. Proposed “New” Futures Subcommittee To create, discuss and draft IBIS/ICM updates Tasks for IBIS 4.2 and Following “Clean up” of language and resolve conflicts Example: [S. Pin Mapping] (BIRD87), [Driver Sched.] (BIRD88) [External Model] integration issues

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Futures Subcommittee

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  1. Futures Subcommittee • Proposed “New” Futures Subcommittee • To create, discuss and draft IBIS/ICM updates • Tasks for IBIS 4.2 and Following • “Clean up” of language and resolve conflicts • Example: [S. Pin Mapping] (BIRD87), [Driver Sched.] (BIRD88) • [External Model] integration issues • Example: Acceptable digital states for input ports • [External Circuit] usage issues • User-definable measurement parameters and delay fixtures • Specification “hooks” between ICM and IBIS • ANSI ballot approval as 656-B • Tasks for ICM • Add frequency-dependent RLGC matrix support • Resolve known parser assumptions and keyword conflicts

  2. Cookbook & Training • Proposed Cookbook Subcommittee • Joint action with Quality Subcommittee • Creates, edits and distributes Cookbooks • Practical examples of new keywords • Hints for data extraction and correlation • See S. Peters’ 1997 IBIS 2.1 Cookbook • Suggest following model of HTML specification guides • Describe all keywords • Use “deprecated” for those no longer encouraged • e.g., [TTpower] • Separate ICM and IBIS publications

  3. Previous Cookbook 1.0 Introduction 1.1 Quick Overview of an IBIS File 1.2 Steps to creating an IBIS Model 2.0 Pre-Modeling Steps 2.1 Basic Decisions Model Version and Complexity Specification Model vs. Part Model Fast and Slow Corner Model Limits Inclusion of SSO Effects 2.2 Information Checklist 2.3 Tips For Component Buffer Grouping 3.0 Extracting the Data 3.1 Using Spice to IBIS (s2ibis) 3.2 Extracting I/V and Switching Data via Simulations 3.2.1 Extracting the I/V Data Simulation Setup 3-state Buffers Output Only Buffers Open Drain Buffers Input Buffers Sweep Ranges Making Pullup and Power Clamp Sweeps Vcc Relative Diode Models Diode Transient Time Data 3.2.2 Extracting the Ramp Rate or V/T Waveform Data Extracting Data for the [Ramp] Keyword Extracting Data for the Rising and Falling Waveform Keywords Minimum Time Step Multi State Drivers 3.3 Obtaining I/V and Switching Information via Lab Measurement

  4. Previous Cookbook (2) 4.0 Putting the Data Into an IBIS File 4.1 IBIS File Header Information 4.2 Component and Pin Information 4.3 The [Model] Keyword Parameter section Temperature and Voltage Keywords I/V data section Pulldown Ground Clamp Pullup Power Clamp Extrapolation Errors [Ramp] and Waveform Tables 4.4 External Package Models 4.5 Verifying the IBIS file 5.0 Validating the Model 6.0 Correlating the Data 7.0 Resources

  5. Development Timeline 1 Jan Feb Mar Q1’04 Not Shown • July, 2002: IBIS 4.0 approved • Sept., 2003: ICM 1.0 approved Spec Activities IBIS 4.1 Parser IBIS 4.2 Proposal IBIS 4.2 Approval IBIS 4.1 Approval ICM 1.5 Proposal ICM 1.0 Cookbook IBIS 4.1 Cookbook ICM 1.5 Approval 26 39 52 13 26 39 13 Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Q2’04 Q3’04 Q4’04 Q1’05 Q2’05 Q3’05 “E-Roadshow” “E-Roadshow” “E-Roadshow” “E-Roadshow” “E-Roadshow” DAC DATE DesignCon Summit Summits PCB East

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