US 2010/0164557 A1 · ACTIVE ECHO ON-DIE REPEATER CIRCUIT

Abstract

A repeater circuit. The repeater circuit includes two output circuits, two echo circuits, two activation circuits, and two deactivation circuits. Responsive to detecting a logical transition of an input signal, one of the activation circuits is configured to activate a corresponding output circuit, which is configured to drive an output signal on an output node. A corresponding echo circuit is configured to be activated and to drive an input node responsive to activation of the corresponding output circuit. A corresponding one of the deactivation circuits is configured to deactivate the corresponding output circuit after a delay time has elapsed, whereas the corresponding echo circuit is deactivated in response thereto. A keeper circuit is configured to continue providing the output signal on the output node after deactivation of the corresponding output circuit.

Claims20

Dependent claims

An electronic circuit comprising:

an output stage including a first output circuit and a second output circuit, wherein the first output circuit is configured to drive, when activated, an output signal on an output node;
an echo stage including a first echo circuit and a second echo circuit, wherein the first echo circuit is configured to drive the input node responsive to activation of the first output circuit;
an activation stage including a first activation circuit and a second activation circuit, wherein the first activation circuit is configured to activate the first output circuit responsive to an input signal transitioning from the first logic level to the second logic level;
and
a deactivation stage including a first deactivation circuit and a second deactivation circuit, wherein the first deactivation circuit is configured to deactivate the first output circuit at a first delay time subsequent to activation of the first output circuit, wherein the first echo circuit is configured to be deactivated responsive to deactivation of the first output circuit.

2 more elements

A method comprising:

detecting a transition of an input signal on an input node from a first logic level to a second logic level;
activating a first output circuit responsive to said detecting, wherein activating the first output circuit causes the first output circuit to drive an output signal on an output node;
activating a first echo circuit responsive to activating the first output circuit, wherein activating the first echo circuit causes the echo circuit to drive the input node;
deactivating the first output circuit at a first delay time subsequent to activating the first output circuit;
deactivating the first echo circuit responsive to deactivating the first output circuit.

2 more elements

Dependencies are inferred from the claim text.

Active echo on-die repeater circuit

Life of this patent

Active echo on-die repeater circuit

Life of this patent

Abstract

Claims20