Dynamic bias circuitry utilizing early voltage clamp and translinear techniques
AssigneeIntel Corporation
InventorBabak A. Taheri
Life of this patent
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Abstract
A dynamic feedback bias circuit. A system utilizing the dynamic bias circuit includes a first bus agent and a second bus agent. The first bus agent generates a first signal having a first voltage swing. The second bus agent has a core which operates at a core operating voltage, the core operating voltage having an amplitude less than the first voltage swing. The second bus agent has an input device which receives the first signal from the first bus agent. The input device of the second bus agent is biased by the dynamic feedback bias circuit to provide a core signal with a voltage swing approximately equal to or less than the core operating voltage.
Claims24
A system comprising:
- a first bus agent coupled to generate a first signal having a first voltage swing;
- a second bus agent having a core coupled to operate at a core operating voltage with an amplitude less than the first voltage swing, the second bus agent having an input device coupled to receive the first signal, the input device being biased by a dynamic feedback bias circuit to provide a core signal having a second voltage swing approximately equal to or less than the core operating voltage.
A system comprising:
- a first bus agent coupled to generate a first signal;
- a bus having a signal line for said first signal;
- a second bus agent having a core operative at a core voltage less than a voltage level of the first signal, the second bus agent comprising:
- a biased input circuit to receive the first signal and a bias voltage, the biased input circuit to generate a biased input circuit output reflective of the first signal;
- a bias voltage select circuit to provide said bias voltage to said biased input circuit, said bias voltage select circuit coupled to receive said biased input circuit output and to select said bias voltage as a function of said biased input circuit output by selectively coupling at least one of a first reference and a second reference to the biased input circuit.
A method comprising:
- generating a first signal on a bus, the first signal having a first voltage swing, the first signal having a first transition;
- biasing an input device to have a first bias voltage during a first portion of the first transition and to have a second bias voltage during a second portion of the first transition.
A method comprising:
- receiving a first signal on a bus, the first signal having a first voltage swing, the first signal having a first transition;
- biasing an input device to have a first bias voltage during a first portion of the first transition;
- biasing the input device to have a second bias voltage during a second portion of the first transition.
A system comprising:
- a first bus agent to generate a first signal having a first transition from a first voltage level to a second voltage level;
- a second bus agent having a core operative at a core voltage level less than a magnitude of a difference between the second voltage level and the first voltage level, the second bus agent having a biased input circuit coupled to receive the first signal, the biased input circuit to receive a first bias voltage during a first portion of the first transition and to receive a second bias voltage during a second portion of the first transition.
Dependencies are inferred from the claim text.