Patent ID: 6690196
Filing Date: 2004-02-10
Classification: H04L

Abstract:
A system for selectively communicating data bi-directionally between a near end and a far end of a transmission line, said system comprising:a first driver, said first driver receiving a near end data signal, a first driver enable signal, and a first mode compensation signal and generating a first driver output, said first driver output coupled to first and second line inputs of said near end of said transmission line, said first driver output driving said transmission line with a selected current level responsive to said near end data signal and said first mode compensation signal; a first receiver circuit coupled to said first and second line inputs and generating a first near end receiver output by detecting a far end signal from within a composite signal when said first driver is enabled; a second receiver circuit coupled to said first and second line inputs of said near end of said transmission line and generating a second near end receiver output by detecting said far end signal when said first driver is disabled; and a first logic circuit receiving said first near end receiver output and said second near end receiver output and generating a far end data signal.