Cadence Design Systems, Inc.
System and method for measurement and adaptation of pulse response cursors to non zero values

Abstract:

A receiver device includes circuitry and memory. The circuitry converts an input signal into a data signal that includes data symbols transmitted in successive unit intervals (UIs), determines a first threshold associated with a first symbol type, adjusts a gain of the receiver device such that an average amplitude of data signal samples, when receiving data symbols having the first symbol type, corresponds to the first threshold, determines a second threshold that corresponds to an average amplitude of the data signal samples when data symbols of a current UI have the first symbol type and data symbols of a first UI, at a first determined time distance from the current UI, have a second symbol type, and computes, as a first cursor value associated with the first UI, a first difference between the first threshold and the second threshold, multiplied by a first constant.