On-Chip Communication Architectures

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fl oorplanner and statistical methods, and then counting the number of times an

interconnect changes direction. Although the via power P

via

is dependent on

the layer in which it resides, this is not taken into account in the model, which

uses approximate values of P

via

by taking its average for different confi gurations

(or optionally using a weighting factor to each via confi guration representing its

proportional contribution to all the vias in the layout). The power consumed by

vias used in repeaters is not estimated by Eq. (5. 13), but is accounted for in the

repeater power consumption term, described below.

5.1.3.3 Power Due to Repeaters ...