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On-Chip Communication Architectures by Nikil Dutt, Sudeep Pasricha

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Chapter 7. Encoding Techniques for On-Chip Communication Architectures

The process of data word transmission on an on-chip bus leads to switching activity 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 and signal propagation delay, which reduces ...

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