PHASE-SHIFTER CIRCUIT AND METHOD OF GENERATING A PHASE-SHIFTED FORM OF A REFERENCE TIMING SIGNAL
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May 8, 2017
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Jun 8, 2016
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A phase-shifter circuit arranged to receive a reference timing signal and to output a phase-shifted form of the reference timing signal. The phase-shifter circuit comprises a delay circuit arranged to receive the reference timing signal and a delay control signal, and to delay transitions within the reference timing signal to generate the phase-shifted form of the reference timing signal, wherein the amount of delay applied by the delay circuit to the transitions within the reference timing signal is controllable by the delay control signal. The phase-shifter circuit further comprises a delay control circuit arranged to receive a re-timed signal comprising transitions re-timed to transitions of the phase-shifted form of the reference timing signal output by the phase-shifter circuit, and to generate the delay control signal for the delay circuit based on the received re-timed signal.
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