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Methods and systems for skew tolerance in and advanced detectors for vector signaling codes for chip-to-chip communication

  • US 9,825,723 B2
  • Filed: 03/29/2016
  • Issued: 11/21/2017
  • Est. Priority Date: 05/20/2010
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving a set of input bits;

    obtaining a measured skew between a first set of wires of a multi-wire bus and a second set of wires of the multi-wire bus;

    obtaining a set of previously-transmitted symbols based on the obtained measured skew, the set of previously-transmitted symbols transmitted on the second set of wires of the multi-wire bus;

    selecting a set of transmit symbols based on the set of previously-transmitted symbols and the received set of input bits, the set of transmit symbols selected from a group of sets of transmit symbols, the group of sets being identified by the set of previously-transmitted symbols, the set of transmit symbols selected from the identified group of sets according to the set of input bits, wherein (i) a subset of the set of transmit symbols concatenated with (ii) the set of previously-transmitted symbols represent symbols of a valid codeword of a skew-tolerant vector signaling code; and

    transmitting the set of transmit symbols as signals over a multi-wire bus, wherein the subset of the set of transmit symbols is transmitted on the first set of wires of the multi-wire bus.

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