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Communication channel calibration using feedback

  • US 10,439,740 B2
  • Filed: 07/17/2017
  • Issued: 10/08/2019
  • Est. Priority Date: 06/09/2004
  • Status: Active Grant
First Claim
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1. An integrated circuit (IC) memory chip, comprising:

  • memory core circuitry;

    interface circuitry coupled to the memory core circuitry, the interface circuitry including multiple input/output (I/O) ports for coupling to respective data links; and

    calibration circuitry includingsensor circuitry to detect signal parameter information at each of the I/O ports, the signal parameter information associated with data received at the I/O ports; and

    a sideband I/O port for coupling to a sideband channel, the sideband port to communicate the signal parameter information via the sideband channel to a memory controller.

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