Method and apparatus for synchronizing a multiple-stage multiplexer

摘要

A method and apparatus for synchronizing multiple-stage multiplexers (2) are disclosed. According to exemplary embodiments of the present invention, multiplexer circuits (3) in the multiple-stage multiplexer (2) are synchronized based upon a frequency response of the output of the multiplexer (2). The power level of the output of the multiple-stage multiplexer (2) is measured at a frequency corresponding to the input data rate of the multiple-stage multiplexer (2), during the time a test pattern is sent through the multiple-stage multiplexer (2). In an exemplary embodiment of the invention, the multiple-stage multiplexer (2) is placed in different states until the measured power level reaches a predetermined level. <IMAGE>