Feasible Assignment of Optimized Power Pads for Signal Intergrity in Modern SOC Design

• Main Author: 柯俊育
• Other Authors: 顏金泰
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/29651518613871462537

碩士 === 中華大學 === 資訊工程學系(所) === 94 === Based on the topology of hierarchical power quad-grids, an optimal network analysis method is proposed to accurately find the voltage of the reference nodes and the current of all the reference branches. After calculating out the number value, IR-drop voltage constraints emerging to the network, utilize the basic effect of circuit, put forward a kind of simple method, and the formula simple to use. Feasible assignment and the optimized number inserting of power pads moved with power pads reduce the question of interfering, and then reduce unnecessary decoupling capacitance inserting, keep signal integrity and guarantees function of chip is comp1ete. For the power pad assignment for the topology of hierarchical power quad-grids, the experimental results show that the iterative adjustment approach with optimal network analysis inserts and assigns the optimized power pads onto feasible locations to release all the IR-drop constraints in reasonable CPU time for the tested example.