DYNAMIC VOLTAGE SCALING IN HIERARCHICAL MULTI-TIER REGULATOR SUPPLY

摘要

Obtaining a periodic test signal, sampling the periodic test signal using a sampling element according to a sampling clock to generate a sampled periodic output, the sampling element operating according to a supply voltage provided by a voltage regulator, the voltage regulator providing the supply voltage according to a supply voltage control signal, comparing the sampled periodic output to the sampling clock to generate a clock-to-Q measurement indicative of a delay value associated with the generation of the sampled periodic output in response to the sampling clock, generating the supply voltage control signal based at least in part on an average of the clock-to-Q measurement, and providing the supply voltage to a data sampling element connected to the voltage regulator, the data sampling element being a replica of the sampling element, the data sampling element sampling a stream of input data according to the sampling clock.