Title :
Substrate-aware mixed-signal macro-cell placement in WRIGHT
Author :
Mitra, Sujoy ; Rutenbar, R.A. ; Carley, L.R. ; Allstot, D.J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA
Abstract :
In this paper we describe a set of algorithms for handling substrate-coupled switching noise in an iterative placement framework. Our model for switching noise uses a coarse resistive grid method for analyzing the coupling of digital switching noise into the analog macros on the chip. The noise effects determined through these models are incorporated into a constrained, simulated annealing based macro cell placement flow. Our results indicate that these substrate-aware algorithms support efficient mixed signal placement optimization
Keywords :
circuit layout CAD; integrated circuit layout; integrated circuit modelling; integrated circuit noise; mixed analogue-digital integrated circuits; simulated annealing; WRIGHT; analog macros; coarse resistive grid method; constrained simulated annealing; digital switching noise; iterative placement framework; mixed signal placement optimization; mixed-signal macro-cell placement; models; substrate-aware algorithms; substrate-coupled switching noise; Circuit noise; Circuit simulation; Cost function; Interference; Iterative algorithms; Routing; Semiconductor device noise; Silicon; Simulated annealing; Substrates;
Conference_Titel :
Custom Integrated Circuits Conference, 1994., Proceedings of the IEEE 1994
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-1886-2
DOI :
10.1109/CICC.1994.379667
