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A2BC: adaptive address bus coding for low power deep sub-micron designs

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2 Author(s)
J. Henkel ; C&C Res. Labs., NEC USA, Princeton, NJ, USA ; H. Lekatsas

Due to larger buses (length, width) and deep sub-micron effects where coupling capacitances between bus lines are in the same order of magnitude as base capacitances, power consumption of interconnects starts to have a significant impact on a system's total power consumption. We present novel address bus encoding schemes that take coupling effects into consideration. The basis is a physical bus model that quantifies coupling capacitances. As a result, we report power/energy savings on the address buses of up to 56% compared to the best known ordinary power/energy efficient encoding schemes. Thereby, we exceed the only to-date approach that also takes coupling effects into consideration. Moreover our encoding schemes do not assume any a priori knowledge that is particular to a specific application.

Published in:

Design Automation Conference, 2001. Proceedings

Date of Conference: