Patent ID: 6445734
Filing Date: 2002-09-03
Classification: H04L

Abstract:
A modem configured to validate equalizer training, comprising:a host controller; and a data pump coupled to the host controller, the data pump comprising: an equalizer; and a memory device coupled to the equalizer, the memory device comprising: equalizer training validation code executable by the data pump, the code comprising: energy measurement code to approximately measure the energy for each tap of a plurality of taps for the equalizer; main tap detection code to detect a main tap with a highest approximate energy, the plurality of taps including the main tap; main tap threshold calculation code to calculate a main tap threshold; main tap threshold analysis code to compare the main tap threshold with a predetermined guarding threshold; and main tap compare code to compare the main tap threshold and the main tap if the main tap threshold is greater than the predetermined guarding threshold and to compare the predetermined guarding threshold and the main tap if the main tap threshold is less than the predetermined guarding threshold.