SERIAL COMMUNICATION INTERFACE CIRCUIT PERFORMING EXTERNAL LOOPBACK TEST AND ELECTRICAL DEVICE INCLUDING THE SAME

摘要

A serial communication interface circuit according to an exemplary embodiment of the present disclosure includes a transmitter that converts first parallel data into first serial data and transmits the first serial data through an output port, and receives second serial data through an input port a receiver to receive, convert the second serial data to second parallel data, a test controller to generate at least one test control signal, and a channel based on the at least one test control signal between the output port and the input port in a test mode It may include a built-in external loopback circuit that forms an external loopback path containing the model.