On-Chip Communication Architectures

158 CHAPTER 5 Models for Power and Thermal Estimation

the bus wires that connect the masters and slaves. Energy macro-models were cre-

ated for the fi rst four components, with E

WIRE

being calculated separately.

The energy macro-models for the bus matrix components are essentially of

the form shown in Eq. (5. 15). Leakage and clock energy (which are the major

sources of independent energy consumption) are considered as part of the static

energy coeffi cient 

0

for each of the components. Based on experimental results,

an approximately linear relationship between cycle energy and macro-model vari-

ables was observed for the components. The ...