Since its introduction, high speed serial (HSS) technology’s use of differential signaling has mitigated the effects of crosstalk. At data rates below 10 Gb/s, HSS signal integrity was limited by jitter. As data rates exceeded 10 Gb/s inter-symbol interference (ISI) became the greatest challenge. But now, with 32 Gb/s and 56 Gb/s rates commonplace and 112 Gb/s in development, crosstalk has joined ISI as a serious problem.
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