Methods and systems for high bandwidth communications interface

摘要

Systems and methods are described for transmitting data over physical channels to provide a high bandwidth, low latency interface between a transmitting device and a receiving device operating at high speed with low power utilization. Communication is performed using group signaling over sets of four wires using a vector signaling code, where each wire of a set carries a low-swing signal that may take on one of four signal values. Topologies and designs of wire sets are disclosed with preferred characteristics for group signaling communications.

主权项

1. A method comprising:
receiving signals via wires of a plurality of wires to obtain signal values, the signal values representing symbols of a codeword of a balanced vector signaling code; detecting a plurality of detected elements by a method comprising for each respective detected element:
obtaining a respective first sum of a first selected pair of signal values;obtaining a respective second sum of a second pair of signal values;comparing the respective first sum and the respective second sum to obtain the respective detected element; andintroducing a correction signal derived from a previous detected element into one or more of the respective first sum, the respective second sum, and an offset of the comparison of the respective first and second sums; and outputting received data derived from the plurality of detected elements.