IR DROP ANALYSIS METHOD OF ASIC DESIGN

摘要

PURPOSE: A method for analyzing the IR Drop of ASIC(Application Specified IC) design is provided to prevent Floorplan step return by analyzing the IR drop at a time point completing Floorplan and Placement. CONSTITUTION: A power network is formed for analyzing a power grid(SP1). After detecting current and resistance of entire ASIC design by generating an equivalent current resistance model for each row, a power rail resistance model is generated by using the current and the resistance(SP2). A supply voltage applied by each instance is calculated(SP3). The voltage and the IR drop applied to a power port of each instance are calculated by using the calculated supply voltage(SP4).