Abstract: An integrated circuit includes a frequency prescaler for producing an infrared transmission carrier; a duty-cycle selector for adjustably setting the carrier's duty cycles; as well as a pulse generator and hardware modulator to generate a signal of desired waveform for infrared transmission. The integrated circuit also includes a multiplexer for receiving the signal of desired waveform from the hardware modulator and a data output signal in producing a selected output signal responsive to a control signal. The integrated circuit further includes an output buffer coupled to the multiplexer for transferring data to an output terminal.

Abstract: The present invention is related to an improved architecture of an integrated circuit with remote transmission function. For no additional carrier circuit is needed, for example in a preferred embodiment, an infrared signal is served as the medium for remote transmission to connect with other interfaces, so as for integration design of the infrared transmission arrangement and the integrated circuit, thereby saving elements in hardware design and the time and costs for design, and improving the working efficiency. Furthermore, a multiplexer receives a select control signal to control the output type, so as for the pin of the integrated circuit for remote transmission applicable for general input/output port in other situations in addition to the infrared transmission.