Serial communication interface circuit performing external loopback test and electrical device including the same
AssigneesSamsung Electronics Co., Ltd., Research & Business Foundation Sungkyunkwan University
InventorsSung-Ha Kim, Jung-Hoon Chun
Life of this patent
Estimating the term…
Abstract
A serial communication interface circuit includes a transmitter configured to convert first parallel data into first serial data and transmit the first serial data through an output port; a receiver configured to receive second serial data through an input port and convert the second serial data into second parallel data; a test controller configured to generate at least one test control signal; and an embedded external loopback circuit configured to form an external loopback path between the output port and the input port to receive the first serial data and output the second serial data according to at least one channel model in response to the at least one test control signal in a test mode.
Claims20
A serial communication interface circuit comprising:
- a transmitter configured to convert first parallel data into first serial data, and transmit the first serial data through an output port;
- a receiver configured to receive second serial data through an input port, and convert the second serial data into second parallel data;
- a test controller circuit configured to generate at least one test control signal;
- and
- an embedded external loopback circuit configured to form an external loopback path between the output port and the input port to receive the first serial data and output the second serial data according to at least one channel model provided in response to the at least one test control signal in a test mode.
An electronic device comprising:
- at least one serial communication interface circuit;
- and
- a controller circuit configured to provide a test setup signal to the at least one serial communication interface circuit in order to test the at least one serial communication interface circuit according to a serial communication requirement of the at least one serial communication interface circuit,
- wherein the at least one serial communication interface circuit comprises:
- an output port configured to output first serial data;
- an input port configured to receive second serial data;
- a test controller circuit configured to generate at least one test control signal in response to the test setup signal;
- and
- an embedded external loopback circuit configured to form an external loopback path between the output port and the input port to receive the first serial data and output the second serial data according to at least one channel model provided in response to the at least one test control signal in a test mode.
A serial communication interface circuit comprising:
- a digital circuit configured to generate and output at least one test control signal in a test mode of the serial communication interface circuit;
- and
- an analog circuit comprising an output port which transmits first serial data, an input port which receives second serial data, and an embedded external loopback circuit connected between the output port and the input port,
- wherein the embedded external loopback circuit receives the first serial data in the test mode, and outputs an attenuated signal from a signal of the first serial data as the second serial data based on the at least one test control signal.
Dependencies are inferred from the claim text.