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A 3 ,\times, 3.8 Gb/s Four-Wire High Speed I/O Link Based on CDMA-Like Crosstalk Cancellation

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3 Author(s)

Code division multiple access (CDMA) principles have been shown to suppress the signal crosstalk caused by inevitable circuit and transmission-line mismatches in a four-wire chip-to-chip electrical signaling system. This paper describes the CDMA-like crosstalk cancellation technique, and discusses equalization and clocking issues in the four-wire simultaneous differential- and common-mode signaling system based on the technique. The implementation and measurement of a 3 × 3.8 Gb/s, 10-12 BER, prototype IC built in a standard 90 nm CMOS technology are also described as a proof of concept.

Published in:

IEEE Journal of Solid-State Circuits  (Volume:45 ,  Issue: 8 )