Partial response decision-feedback equalization with adaptation based on edge samples

Abstract

A device () implements data reception with edge-based partial response decision feedback equalization. In an example embodiment, the device implements a tap weight adapter circuit () that sets the tap weights that are used for adjustment of a received data signal (). The tap weight adapter circuit () sets the tap weights based on previously determined data values and input from an edge analysis of the received data signal using a set of edge samplers. The edge analysis () may include adjusting the sampled data signal by the tap weights determined by the tap weight adapter circuit. A clock generation circuit () generates an edge clock signal to control the edge sampling performed by the set of edge samplers. The edge clock signal may be generated as a function of the signals of the edge samplers and prior data values determined by the equalizer.