On-Chip Communication Architectures

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CHAPTER

The process of data word transmission on an on-chip bus leads to switching activ-

ity of data bits on the bus wires, which charges and discharges the capacitance

associated with the wires and consequently leads to dynamic power dissipation,

as discussed in Chapter 5. The effective capacitance associated with a wire is

made up of not only the ground capacitance of the wire itself (self-capacitance),

but also the coupling capacitance and coupling inductance due to switching

activity on the adjacent wires. The latter phenomenon is referred to as crosstalk,

and in addition to power consumption, it also leads to an increase in signal noise ...