摘 要 i ABSTRACT iii 誌 謝 iv List of Figures vii List of Tables x Chapter 1. Introduction 1 1.1 Background 1 1.2 Review of Previous Technique 3 1.2.1 Congestion Estimation Model 3 1.2.2 Cell Reordering by Net Direction 6 1.2.3 Wirelength Minimization 7 1.2.4 Legalization 14 1.3 Contribution 16 Chapter 2. Problem Formulation and Overview of Our Algorithm 17 2.1 Problem Formulation 17 2.2 Placement Initialization 18 Chapter 3. Routability-Driven Placement Algorithm 20 3.1 Routability Optimization 20 3.2 Bin Density Mitigation 21 3.3 BinResize and Cell Redistribution 22 3.3.1 Bin Resizing Constraints 22 3.3.2 Linear Expansion 25 3.3.3 Cell Redistribution 28 3.3.4 Congestion Mitigation Cell Redistribution 28 3.4 Review of the Whole Design Flow 30 Chapter 4. Experimental Result 32 Chapter 5. Conclusion 38 REFERENCES 39
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