Table of Contents
EE219A: Computer Analysis of Electrical Circuits Outline Lecture 11.2
Chip Interconnect Systems
Rent’s Rule
Rent’s Rule
Rent’s Curves for Chips & Systems
Average Interconnection Length
Interconnect Effects
Transition Times
Propagation Delay
Interconnect Modeling
Resistance Basics
Resistance Scaling
Resistance Scaling
Capacitance Basics
Plate Capacitance
Edge Capacitance
Capacitance Scaling
Capacitance Scaling
Scaling Summary
PPT Slide
Crosstalk
Lumped Interconnect Model
Evaluation of Lumped RC Interconnect Models
Distributed Model
Inertial & Transmission-Line Delays
Pulse Propagation
Modeling Distributed RC Nets
Coupling Capacitance
The Elmore Time Constant
The Elmore Time Constant
Calculating Elmore Delay
Elmore Delay: Limitations and Extensions
Penfield-Rubenstein Model
Penfield-Rubenstein Bounds
Penfield-Rubenstein
Penfield-Rubenstein Model
Asymptotic Waveform Evaluation (AWE) (Pillage & Rohrer, TCAD April 1990)
Resistor-Transistor Inverter
CMOS Inverter
Effect of Input and Output Time Constants
Computing Path Delays in Networks
Static Timing Analysis
Purpose of Static Timing Verification
Elements of Timing Verification
Elements of Static Timing Verification
Elements of Static Timing Verification
Typical Simplifications
Approach -reduce to combinational
Each combinational block
Problem Formulation
Problem Formulation
Problem Formulation
Algorithm Execution
Algorithm Execution
Algorithm Execution
Algorithm Execution
Algorithm Execution
Algorithm Execution
Algorithm Execution
Algorithm Execution
Algorithm Execution
Algorithm Execution
Algorithm Execution
Critical Path (sub-graph)
Approach of Static Timing Verification
Interesting Example: Carry Bypass Adder
Inside Carry Bypass Adder - 1
Inside Carry Bypass Adder - 2
Capturing Functional Behavior in Analysis
Issues Treated as Orthogonal
Floating Mode Path Delay Assumptions
Single vector condition:Static Sensitization
Example of static sensitization
Lack of static sensitization
Inadequacy of static sensitization
Necessary Condition for Truth of a Path
The World of Paths
Best News: Runtimes
Summary of status on static verification
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