Optical transmission control circuit

摘要

An optical transmission control circuit includes: an analog input section which inputs an optical transmission state as an analog value; an A/D conversion section which converts the analog value into a digital value; a value storage section which stores a maximum value of the digital value provided by the A/D conversion section; an output register which outputs a value to a host apparatus; and a control section which controls the maximum value storage section to store the maximum value of the digital value therein and controls the output register to outputs the maximum value to the host apparatus.