Abstract: Techniques and mechanisms for using multiple delay line circuits to detect a change to the frequency of a periodic signal. In an embodiment, a first delay line receives the periodic signal from a phase locked loop, and generates first bits which include an indication of a first edge segment of the delay line. Another two delay lines receive respective bits which are variously based on a sampling of the first bits. The other two delay lines each output a respective one of two bit sequences, which are sampled or otherwise used to determine the transitioning of a clock signal. In another embodiment, the frequency of the clock signal is determined based on one of a threshold minimum period of time that the frequency of the periodic signal is stable, a threshold minimum frequency of the periodic signal, or a threshold minimum increase to the frequency of the periodic signal.

Abstract: Some embodiments include apparatuses and methods using a supply node to receive a die voltage; a delay line to stretch and squish a first clock signal in response to changes in the die voltage to generate a second clock signal; a frequency clamp circuit to receive the second clock signal and generate a third clock signal that is clamped below a frequency; and a squash controller to squash the third clock signal when the die voltage crosses at least one of a first threshold and a second threshold.

Abstract: Techniques and mechanisms for using multiple delay line circuits to detect a change to the frequency of a periodic signal. In an embodiment, a first delay line receives the periodic signal from a phase locked loop, and generates first bits which include an indication of a first edge segment of the delay line. Another two delay lines receive respective bits which are variously based on a sampling of the first bits. The other two delay lines each output a respective one of two bit sequences, which are sampled or otherwise used to determine the transitioning of a clock signal. In another embodiment, the frequency of the clock signal is determined based on one of a threshold minimum period of time that the frequency of the periodic signal is stable, a threshold minimum frequency of the periodic signal, or a threshold minimum increase to the frequency of the periodic signal.

Abstract: Some embodiments include apparatuses and methods using a supply node to receive a die voltage; a delay line to stretch and squish a first clock signal in response to changes in the die voltage to generate a second clock signal; a frequency clamp circuit to receive the second clock signal and generate a third clock signal that is clamped below a frequency; and a squash controller to squash the third clock signal when the die voltage crosses at least one of a first threshold and a second threshold.