Statistical information of crosstalk on parallel bus

Abstract

There are lots of studies regarding methods of coding the information sent via a parallel data bus from inside a chip. As a result of shrinking the gadgets, the traces from an off-chip bus are getting closer, and the coupling capacitance is increasing. The traces from an off-chip bus are much longer than the ones from an on-chip bus, so a new study is necessary to analyze how crosstalk affects off-chip parallel data bus. The paper will take into account the capacitive coupling, but also the inductive coupling, which has bigger values for off-chip traces, affecting even more distant traces from the aggressor net. Additionally will be analyzed the effects of inter-symbol interference (ISI) on the crosstalk that appears between the traces of the parallel data bus. The study will show that methods used in coding theory for onchip busses can't guarantee an error free transmission.