Thecomplexityofembeddedsystems-on-a-chipisrapidlygrowing.Di?erentexpertsareinvolvedin
the design process: application software designers, programmable core
architects, on-chip com- nication engineers, analog and digital
designers, deep submicron specialists and process engineers. In order to
arrive at an optimum implementation compromises are needed across
boundaries of the di?erent domains of expertise. Therefore, the authors
of this book take the point of view of the system architect who is a
generalist rather than an expert. He is responsible for the de?nition of
a high level architecture,
whichisgloballyoptimal.Findinganoptimumrequiresaproperbalancebetweenarea,
performance and last but not least energy consumption. The challenge is
not only the size of the design space but also the fact that the most
important decisions are taken during the early design phases. The
advantage of an early decision is that the impact on area, performance
and energy consumption is large. But the disadvantage is that the
available information is often limited, incomplete and inaccurate. The
task of the system architect is to take the correct early decisions
despite the uncertainties