Methods and circuits for adaptive equalization

摘要

An integrated circuit equalizes a data signal expressed as a series of symbols. The symbols form data patterns with different frequency components. By considering these patterns, the integrated circuit can experiment with equalization settings specific to a subset of the frequency components, thereby finding an equalization control setting that optimizes equalization. Optimization can be accomplished by setting the equalizer to maximize symbol amplitude.

主权项

1. An integrated circuit comprising:
an equalizer to equalize a data signal responsive to an equalization control signal to produce an equalized signal; a pattern detector programmable to recognize at least two data patterns, each pattern representing a subset of frequencies represented by the data signal; and control logic to generate the equalization control signal responsive to the detected pattern.