System-on-chip having adjustable voltage level and method for the same
AssigneeSamsung Electronics Co., Ltd.
InventorJin-Sung Kim
Life of this patent
Estimating the term…
Abstract
A system-on-chip may include a plurality of power domains each of which may have a different operating frequency and include a monitoring unit. A power supply may supply power to each of the power domains. A clock generator may output a reference clock to each of the monitoring units. A controller may set a target operating frequency in response to a target frequency set, control the clock generator to generate a reference clock corresponding to the target operating frequency, and generate a control signal for adjusting voltage levels of the power domains based on operating status information from the monitoring units.
Claims23
A system-on-chip comprising:
- a plurality of power domains, each of the plurality of power domains having a different operating frequency and including a monitoring unit for monitoring an operating status of a corresponding one of the plurality of power domains;
- a power supply for supplying power to the plurality of power domains;
- a clock generator for outputting a reference clock to each of the monitoring units;
- and
- a controller for setting a target operating frequency in response to a target set signal, controlling the clock generator to generate and output a reference clock corresponding to the target operating frequency, generating a control signal to adjust voltage levels of the power domains to the power supply based on operating status information received from each of the monitoring units.
A method of adjusting a voltage level, comprising:
- generating a reference clock based on a target operating frequency;
- comparing a frequency of the reference clock with an operating frequency of at least one IP block or at least one sub-block to generate a comparison result;
- selecting a voltage level based on the comparison result;
- supplying each of a plurality of power domains with power based on the selected voltage level;
- and
- determining whether power supplied to the power domain has an appropriate voltage level.
Dependencies are inferred from the claim text.