Title :
Fast coupled noise calculation for crosstalk avoidance in MCM autorouting
Author :
Hameenanttila, Tom ; Carothers, Jo Dale
Author_Institution :
Dept. of Electr. & Comput. Eng., Arizona Univ., Tucson, AZ, USA
Abstract :
A fast method of crosstalk noise avoidance for correct-by-design MCM routing is discussed. During substrate routing, coupled noise in nets is calculated and noise amplitudes exceeding coupled noise budgets are corrected as part of the routing process. This represents an improvement over the heuristic noise reduction methods employed by some MCM routers and geometrical wiring rules generated by detailed simulation used by others. Lookup tables of coupling data are used in conjunction with closed-form equations in order to obtain noise estimates quickly. The method is applicable to a wide variety of MCM technologies without alteration, since the noise estimation is based only on interconnect geometry and the dielectric constant of the medium. The correctness of the noise estimation has been verified using a transmission line simulator and the effect of the procedure on the routing density achieved by an MCM autorouter has been investigated
Keywords :
circuit layout CAD; crosstalk; integrated circuit layout; integrated circuit noise; multichip modules; network routing; MCM autorouting; closed-form equations; correct-by-design; coupled noise; crosstalk; dielectric constant; interconnect geometry; lookup tables; nets; substrate routing; transmission line simulator; Crosstalk; Dielectric constant; Equations; Geometry; Noise level; Noise reduction; Routing; Solid modeling; Table lookup; Wiring;
Conference_Titel :
ASIC Conference and Exhibit, 1995., Proceedings of the Eighth Annual IEEE International
Conference_Location :
Austin, TX
Print_ISBN :
0-7803-2707-1
DOI :
10.1109/ASIC.1995.580671
