Low latency fine grain system-on-chip throttling apparatus and method on usb type-c port

A system comprising:

• a memory;
• a processor coupled to the memory;
• a power management integrated circuit coupled to the processor,
• a wireless interface to allow the processor to communicate with another device, wherein the power management integrated circuit includes:
• a comparator having a first input coupled to a pull-up or a pull-down impedance of the Type-C CC signal lines, and a second input to receive an adjustable threshold;
• and
• a flip-flop coupled to the comparator, wherein an output of the comparator is to sample a data input of the flip-flop, wherein an output of the flip-flop is to provide an indicator to a processor to throttle a voltage and/or frequency of the processor.

A machine-readable storage media having machine-executable instructions that when executed cause one or more machines to perform a method comprising:

• detecting USB Type-C power delivery protocol packets and to generate throttle hints for a processor when a peripheral or charger to is coupled to a USB Type-C port;
• utilizing a fuel gauge to determine fine grain power loss or gain information on connection of the peripheral or charger to the USB Type-C port;
• and
• triggering a throttle indication for the processor based on the detecting and utilizing.