TRANSMITTER AND RECEIVER OF DIFFERENTIAL CURRENT DRIVING MODE, AND INTERFACE SYSTEM OF DIFFERENTIAL CURRENT DRIVING MODE INCLUDING THE SAME

摘要

The present invention introduces: a transmitter of a differential current driving mode which transmits data to a receiver by controlling the direction of current flowing on a transmission line, a transmitter of a differential current driving mode, and an interface system including the transmitters. The transmitter includes a current source, a current direction selection block and a balance-switch block. The current source supplies current to a pair of transmission lines or sinks the current flowing from the transmission lines. The current direction selection block transfers the current flowing from the current source to one of the transmission lines, and transfers the current flowing on the other transmission line to the current source. The balance switch block sets the transmission lines in the initial balanced state.