摘要:
A phase controller can be part of a phase-locked loop (PLL) or a delay-locked loop (DLL). The phase controller includes first and second regulators. The first regulator provides power supply noise rejection while the second regulator provides phase and frequency lock.
摘要:
A phase controller can be part of a phase-locked loop (PLL) or a delay-locked loop (DLL). The phase controller includes first and second regulators. The first regulator provides power supply noise rejection while the second regulator provides phase and frequency lock.
摘要:
A phase controller can be part of a phase-locked loop (PLL) or a delay-locked loop (DLL). The phase controller includes first and second regulators. The first regulator provides power supply noise rejection while the second regulator provides phase and frequency lock.
摘要:
A phase controller can be part of a phase-locked loop (PLL) or a delay-locked loop (DLL). The phase controller includes first and second regulators. The first regulator provides power supply noise rejection while the second regulator provides phase and frequency lock.
摘要:
A phase controller can be part of a phase-locked loop (PLL) or a delay-locked loop (DLL). The phase controller includes first and second regulators. The first regulator provides power supply noise rejection while the second regulator provides phase and frequency lock.
摘要:
An oscillating signal in an oscillator is caused to phase shift toward the phase of an input signal coupled to the oscillating signal. The resonant frequency of the oscillator is about equal to an integer multiple of the frequency of the input signal. The input signal may be generated in a pulse generator to have an input pulse duration less than or equal to that of the oscillating signal. The oscillator circuit may be used as a filter to filter pulse width variations or to filter jitter from a reference clock. The oscillator circuit may also serve as a buffer by amplifying the input signal. Phase interpolation can be obtained by coupling at least one input signal with at least one oscillating signal.
摘要:
A system and method for performing clock data recovery. The system sets the phase of a recovered clock signal 30 according to at least three estimates of the rate of change of an offset between the frequency of the data transmitter clock and the frequency of a receiver clock 15.
摘要:
An oscillating signal in an oscillator is caused to phase shift toward the phase of an input signal coupled to the oscillating signal. The resonant frequency of the oscillator is about equal to an integer multiple of the frequency of the input signal. The input signal may be generated in a pulse generator to have an input pulse duration less than or equal to that of the oscillating signal. The oscillator circuit may be used as a filter to filter pulse width variations or to filter jitter from a reference clock. The oscillator circuit may also serve as a buffer by amplifying the input signal. Phase interpolation can be obtained by coupling at least one input signal with at least one oscillating signal.
摘要:
A system and method for performing clock and data recovery. The system sets the phase of a recovered clock signal according to at least three estimates of the rate of change of an offset between the frequency of the data transmitter clock and the frequency of a receiver clock.
摘要:
A circuit to test phase linearity of a phase synthesizer, which synthesizes an output clock having a phase corresponding to a digital phase value input to the phase synthesizer. A digital counter provides the digital phase value to the phase synthesizer. The digital counter receives a counter clock synchronized with an input clock. The digital phase value is stepped by the digital counter, thereby shifting the frequency of the output clock. The output clock is analyzed with respect to phase linearity of the phase synthesizer to produce a phase linearity analysis output.