| 摘要 |
An integrated circuit having a plurality of integrated circuit portions where each of the plurality of integrated circuit portions receives a corresponding voltage of a plurality of voltages. Selection circuitry selects a selected voltage of the plurality of voltages and provides an indication of the selected voltage to adjust the supply voltage to the integrated circuit. In one embodiment, the indication may correspond to an analog signal proportional to the selected voltage such as e.g. at the selected voltage or at a voltage less than or greater than the selected voltage. In one embodiment, the selected voltage corresponds to a maximum voltage of the plurality of voltages which may be selected based on sensing the plurality of voltages or based on a plurality of voltage level indicators which set the plurality of voltages. A power supply system, coupled to the integrated circuit, may be used to receive the indication of the selected voltage and adjust the supply voltage based on the indication.
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