An Efficient Switching Activity Reduction Technique for On-Chip Data Bus
In Deep-submicron (DSM) systems, the coupling effect on onchip
data buses and interconnects plays an important role in
overall performance and reliability of the VLSI systems. In many
digital processors and SoC the switching activity results into
dynamic power dissipation on the data buses and interconnects
which is a major part of the total chip power dissipation.
Switching activity is due to self transitions and coupling
transitions. Reducing the power dissipation of the VLSI chip is
one of the major challenges in the DSM technology. One of the
best techniques to reduce the transitions is to encode the data on
the data bus. Hence an efficient switching activity reduction
technique is proposed which can reduce the overall transitions.
The proposed encoding technique reduces the coupling transition
by 29% to 33%, self transitions by 4% to 19% and overall
transitions by 22% to 27%. Its efficiency is 10% to 17% more
compare to others encoding techniques.
Keywords: Coupling transitions, Self transitions, VDSM, crosstalk, interconnects, SoC, Power dissipation
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