Patent ID: 11942953
Assignee: ADVANCED MICRO DEVICES, INC.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An apparatus comprising:
a reference signal generator that receives a digital value and produces a pulse-density modulated signal based on the digital value;
a droop detection circuit that converts the pulse-density modulated signal to an analog signal, compares the analog signal to a monitored supply voltage, and responsive to detecting a droop of the monitored supply voltage below a designated value relative to the analog signal, produces a droop detection signal;
a digital frequency-locked loop (DFLL) providing a clock signal for synchronizing circuitry within a domain of the monitored supply voltage; and
a DFLL control circuit that, responsive to receiving the droop detection signal, causes the DFLL to slow the clock signal.