What is in the Calibre xRC design flow?
A. Parasitic extraction with Calibre xRC is accomplished by the following components. • Hierarchical Data Base (HDB): a highly optimized connectivity-based representation of the physical layout database. • Filtered Data Base (FDB): a full geometrical and connectivity information associated with the nets of concern and their environments (i.e., other nets of influence, as well as devices connected to these nets.) It is net data independent of hierarchy, but referenced hierarchically. • Calibre xRC-PX: a high-capacity, high-performance pattern-based parasitic extraction engine for lumped C and distributed RC extraction (including net-to-net coupling), with a completely user-definable level of accuracy. • Parasitics Data Base (PDB): a database of electrical models created by the extraction engine from the physical interconnect, complete with a formatter to provide these models in whatever form or level of abstraction required by downstream post-layout analysis tools. • Data Management: a
