Voltage scaling system supporting synchronous applications

A system for scaling voltage, comprising:

• a processor, where the processor is configured to receive an instruction to scale a system supply voltage to a target supply voltage;
• one or more first components, where operations of the one or more first components are halted during the voltage scaling;
• and
• a controller that includes:
• a register that is configured to enable the voltage scaling for the system, where the register is configured to be set to a first value upon receipt of the received instruction and to a second value otherwise, where the operations of the one or more first components are halted based on the register being set to the first value;
• a power scaling system that provides an operating mode based on an output of the register, where the operating mode configures the operations of the one or more first components;
• and
• a gate circuit having the output of the register as a first input and the operating mode as a second input, where an output of the gate circuit determines whether the operations of the one or more first components are resumed or halted,
• wherein the controller is configured to:
• receive a control signal from the processor to set the register to the first value in response to the instruction to scale the system supply voltage to the target supply voltage;
• control a voltage regulator to scale the system supply voltage to the target supply voltage;
• receive an indication from the voltage regulator when the target supply voltage is reached;
• and
• set the register to the second value when the target supply voltage is reached, where the operations of the one or more first components are resumed based on the register being set to the second value.