Systems and Methods for Filter Constraint Estimation

A data processing circuit, wherein the data processing circuit comprises:

• a digital filter, wherein operation of the digital filter is at least in part governed by filter taps that correspond to a filter tap constraint value;
• and
• a detector circuit, wherein operation of the detector circuit is at least in part governed by a target parameter;
• a filter tap selector circuit, wherein the filter tap selector circuit is operable to select the filter taps for the digital filter based at least in part on the target parameter and a predefined relationship between the filter tap constraint value and the target parameter.

A method for calibrating a data processing circuit, the method comprising:

• providing a digital filter, wherein operation of the digital filter is at least in part governed by filter taps that correspond to a filter tap constraint value;
• providing a detector circuit, wherein operation of the detector circuit is at least in part governed by a target parameter;
• selecting a target parameter;
• calculating the filter tap constraint value based on the target parameter;
• and
• selecting the filter taps that correspond to the filter tap constraint value.