Title :
A generalized approach to routing mixing analog and digital signal nets in a channel
Author :
Gyurcsik, Ronald S. ; Jeen, Jzan-ching
Author_Institution :
Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA
fDate :
4/1/1989 12:00:00 AM
Abstract :
A generalized algorithm for two-layer detailed channel routing of mixed analog and digital signal nets is described. In this algorithm, nets are classified based on the type of signal they carry. A table stores classification-dependent information including data to calculate minimum net-to-net spacing, sensitivity to parasitic capacitances, and the single-layer-only routing requirement. The routing channel is represented by a weighted directed graph. The graph represents relative positions of nets with the channel. The edge weights and directions in the graph are assigned to account for the analog routing concerns provided in the net classification table.<>
Keywords :
circuit layout CAD; directed graphs; network topology; CAD; classification-dependent information; generalized algorithm; layout design; minimum net-to-net spacing; mixed analogue/digital signal nets; net classification table; parasitic capacitances; routeing channel; sensitivity; single-layer-only routing requirement; two-layer detailed channel routing; weighted directed graph; Analog integrated circuits; Application specific integrated circuits; Design automation; Digital circuits; Digital integrated circuits; Integrated circuit synthesis; Parasitic capacitance; Process design; Routing; Very large scale integration;
Journal_Title :
Solid-State Circuits, IEEE Journal of
