Routing of analog busses with parasitic symmetry

Authors:
Lars Schreiner;Markus Olbrich;Erich Barke;Volker Meyer zu Bexten
Affiliations:
University of Hannover, Hannover, Germany;University of Hannover, Hannover, Germany;University of Hannover, Hannover, Germany;Atmel Germany GmbH, Ulm, Germany
Venue:
Proceedings of the 2005 international symposium on Physical design
Year:
2005

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Abstract

This paper presents a new methodology for routing net bundles like busses and paired nets maintaining parasitic symmetry. It is mainly devoted to analog signal interconnect and can also be used for critical digital busses or clock signals. The PARasitic SYmmetric router (PARSY) is the first router that limits differential capacitances to a user defined value. Wirelength differences inside a net bundle are also equalized automatically. This routing methodology uses a novel module generator approach for wire implementation.