Striking the Right Chord for Chiplet Integration

Why Chord signaling, which transforms incoming bit streams onto patterns, is efficient.


The growing digitalization of our society has made our lives connected and, in many aspects, easier. But the digital revolution also implies that the total amount of data processed in the world is doubling every two years or so. Electronic devices such as mobile phones, laptops, satellites, servers or self-driving vehicles must cope with twice as much data, at higher speeds. Traditional signaling methods for transmission of information between chips in an electronic device are at the end of their lifetimes. Moore’s Law, the golden rule that has dominated much of the electronics industry in the last decades, is reaching its limits as well. The time is ripe for entirely novel means of communicating data; methods that allow faster communication of information at radically lower power.

Born out of this necessity, Kandou Bus has created a new signaling paradigm, called Chord™ signaling. Based on 40+ years of cumulative research, Chord signaling transforms incoming bit streams onto well-chosen patterns and superimposes them on multiple wires. At the receiver, a network of comparators detects the individual bits transmitted on the wires. Operationally, each such comparator compares the average of the values on a subset of the wires against the average of wire values on another subset.

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