Serial bus protocol encoding for voltage regulator with support for dvfs
AssigneeChaoyang Semiconductor Jiangyin Technology Co., Ltd.
InventorAnatoly Gelman
Life of this patent
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Abstract
Systems and methods for changing an output voltage of a voltage regulator are disclosed. A voltage change command that is serially transmitted from a control system to a voltage regulator is used to indicate that a change is output voltage is requested. The voltage change command is a serial stream that is less than a byte in length and includes a 1-bit write operation field, a 1-bit voltage change field and up to 6 bits of voltage change information.
Claims13
A control logic for a voltage regulator comprising:
- circuitry configured to receive a serial stream of a plurality of bits wherein a number of bits in the serial stream is less than or equal to a byte;
- circuitry configured to determine whether a portion of the serial stream indicates a voltage change command;
- circuitry configured to determine a desired output voltage from voltage information in a voltage change information portion of the serial stream in response to a determination that the serial stream includes a voltage change command;
- circuitry configured to change an output voltage of the voltage regulator from a previous output voltage to the new output voltage based on the determined new output voltage.
The control logic wherein the write operation indicator is a first bit of the serial stream and the voltage change indicator is a second bit in the serial stream.
A control system for communicating with a voltage regulator to change an operating voltage of the voltage regulator comprising:
- a processor;
- memory accessible by the processor that directs the processor to:
- determine that an output voltage of a voltage regulator is to change,
- generate a serial stream of a plurality of bits that provides a voltage change command wherein a number of bits in the serial stream is less than or equal to a byte, and
- transmit the serial stream including the voltage change command to the voltage regulator.
The control system of claims wherein the instructions further direct the processor to:
- generate voltage change information;
- and
- encode the voltage change information into the serial stream wherein the voltage change information is three to six bits in length.
Dependencies are inferred from the claim text.