Integrated circuit capable of controlling impedance and electronic device including the same
AssigneeSamsung Electronics Co., Ltd.
InventorsCheolho LEE, Seungjoon YOON
Life of this patent
Estimating the term…
Abstract
Disclosed is an electronic device. The electronic device may include a printed circuit board (PCB) including at least one conducting wire, a first integrated circuit (IC) placed on the printed circuit board and including a transmit pin electrically connected to the at least one conducting wire, and a second IC placed on the printed circuit board and including a receive pin electrically connected to the at least one conducting wire, wherein the first IC is configured to transmit a specified signal having a first voltage through the transmit pin, and change an internal impedance of the first IC based on a reflected signal of the specified signal at a first time point.
Claims20
An electronic device comprising:
- a printed circuit board (PCB) including at least one conducting wire;
- a first integrated circuit (IC) placed on the printed circuit board and including a transmit pin electrically connected to the at least one conducting wire;
- and
- a second IC placed on the printed circuit board and including a receive pin electrically connected to the at least one conducting wire,
- wherein the first IC is configured to:
- transmit a specified signal having a first voltage through the transmit pin;
- and
- change an internal impedance of the first IC based on a reflected signal of the specified signal at a first time point.
A method of changing an impedance of an integrated circuit included in an electronic device, the method comprising:
- transmitting a specified signal having a first voltage through a transmit pin;
- measuring a second voltage of the transmit pin, the second voltage including a reflection component of the specified signal, at a first time point;
- obtaining an impedance of at least one conducting wire electrically connected with the integrated circuit based on the first voltage and the measured second voltage;
- and
- changing an internal impedance of the integrated circuit based on the obtained impedance of the at least one conducting wire.
An integrated circuit which is placed on a printed circuit board, comprising:
- a transmit pin for transmitting a specified electrical signal to another integrated circuit through at least one conducting wire included in the printed circuit board;
- a transmit buffer including a plurality of impedance elements and a demultiplexer for connecting one of the plurality of impedance elements with the transmit pin;
- and
- at least one controller electrically connected with the transmit buffer,
- wherein the at least one controller is configured to:
- connect a first impedance element of the plurality of impedance elements with the transmit pin by using the demultiplexer;
- output a specified signal having a first voltage to the transmit pin;
- obtain an impedance of the at least one conducting wire based on the first voltage and a measured second voltage including a reflection signal of the specified signal;
- and
- connect a second impedance element of the plurality of impedance elements with the transmit pin based on the a reflection signal of the specified signal at a first time point.
Dependencies are inferred from the claim text.