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US 10,734,993 B2Granted
Adaptive voltage scaling system for out of context functional safety SoC
AssigneeTexas Instruments Incorporated
InventorsVenkateswar Reddy Kowkutla, Chunhua Hu, Erkan Bilhan, Sumant Dinkar Kale
Life of this patent
Estimating the term…
Abstract
The optimal operating voltage of a complex SoC may be influenced by process variations. The operating voltages may be dynamically adjusted for optimal performance. These adjustments require a dynamic reconfiguration of the voltage monitoring thresholds in the power on reset circuitry of the SoC.
Claims18
A power on reset (PoR) sequencer, comprising:
- a first logical gate configured to mask a first power OK (POK) signal with a first reset mask, to generate a first masked signal;
- a second logical gate configured to mask a second POK signal with a second reset mask, to generate a second masked signal;
- a third logical gate coupled to the first logical gate and to the second logical gate, the third logical gate configured to take a logical OR operation of the first masked signal and the second masked signal, to generate a control signal;
- and
- a reset logic configured to:
- calculate new thresholds for a voltage monitoring circuit based on the control signal;
- and
- apply the new thresholds for the voltage monitoring circuit to the voltage monitoring circuit.
5 more elements
A method comprising:
- masking, by a first logical gate, a first power OK (POK) signal with a first reset mask, to generate a first masked signal;
- masking, by a second logical gate, a second POK signal with a second reset mask, to generate a second masked signal;
- taking a logical OR operation, by a third logical gate, of the first masked signal and the second masked signal, to generate a control signal;
- calculating, by a reset logic, new thresholds for a voltage monitoring circuit, based on the control signal;
- and
- applying, by the reset logic to the voltage monitoring circuit, the new thresholds.
3 more elements
Dependencies are inferred from the claim text.