Apsim Announces Full Chip Power Simulator.Business Editors/High-Tech Writers SAN JOSE, Calif.--(BUSINESS WIRE)--Sept. 30, 2003 Applied Simulation Technology Apsim Power Integrity (ApsimPI), is a powerful new simulator designed to simulate the impedance of power and ground grids in the frequency domain or signal/power/ground waveforms in the time domain considering the full chip power and ground grids. With speeds on chip well into the Giga Hertz range it is no longer accurate to model the voltage fluctuation on the power system using only the resistive elements. At Giga Hertz speeds it becomes necessary to consider the full LCR See least cost routing. (inductance, capacitance, resistance) effects over a broad frequency range. ApsimPI extracts the LCR models of the power and ground nets from the LSI LSI: see integrated circuit. (Large Scale Integration) Between 3,000 and 100,000 transistors on a chip. See SSI, MSI, VLSI and ULSI. CAD data (LEF/DEF) considering the slow mode effect of the silicon substrate with resistivity and dielectric constant over frequency. Since the resulting LCR matrices are huge, new algorithms using a special solver were developed. This dramatically reduces the computation time and removes the limitation of the circuit size for extracting the Nport compressed parameters. The extracted Nport parameters can then be converted into concise SPICE readable models to simulate the broadband effects in the time and frequency domains. The signal transmission lines considering the silicon substrate effect can be added before or after compressing the power and ground model. The nonlinear transistor or behavioral models can be connected to the device ports of the whole model. In order to analyze waveforms in the time domain, a new coupled transmission line model and Nport frequency table model have been developed. Applications to the program include predicting power/ground voltage fluctuation and peak currents in the time domain. Impedance between power and ground is computed for the frequency domain considering on-chip decoupling capacitors and substrate effects. Noise on the substrate can couple into sensitive areas of the IC causing timing and functional problems. ApsimPI can detect such issues and help in the analysis for corrective actions. Extensions to the program can be added to model signal nets in the presence of the power system for Signal Integrity, crosstalk and SSO See single sign-on and CSO. SSO - single sign-on noise analysis. ApsimPI comes with an interface to the LEF/DEF data. A GDSII GDSII Graphic Design System II interface will be released soon. These interfaces output Apsim's standard data format AAIF AAIF Arab American Institute Foundation AAIF American Association of Interchurch Families AAIF American Academics for Israel's Future AAIF Architecture Advocacy International Foundation, Inc. , which is common to other Apsim tools used to analyze PCB PCB: see polychlorinated biphenyl. PCB in full polychlorinated biphenyl Any of a class of highly stable organic compounds prepared by the reaction of chlorine with biphenyl, a two-ring compound. and IC packaging for SI, PI and EMC (1) (EMC Corporation, Hopkinton, MA, www.emc.com) The leading supplier of storage products for midrange computers and mainframes. Founded in 1979 by Richard J. Egan and Roger Marino, EMC has developed advanced storage and retrieval technologies for the world's largest companies. considerations. The product is available on both UNIX UNIX Operating system for digital computers, developed by Ken Thompson of Bell Laboratories in 1969. It was initially designed for a single user (the name was a pun on the earlier operating system Multics). and Windows operating systems. |
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