Semiconductor device
A semiconductor device includes a first variable delay circuit that delays inputted multiphase signals according to a delay control signal, a selection circuit that selects and outputs two signals of signals output from the first variable delay circuit, a second variable delay circuit that delays on...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A semiconductor device includes a first variable delay circuit that delays inputted multiphase signals according to a delay control signal, a selection circuit that selects and outputs two signals of signals output from the first variable delay circuit, a second variable delay circuit that delays one of the two signals according to the delay control signal, a phase comparison circuit that compares a phase of a signal outputted by the second variable delay circuit with a phase of the other of the two signals, a filter that updates the delay control signal according to a signal outputted by the phase comparison circuit, and a delay control signal selection circuit that provides the delay control signal to the first variable delay circuit or the second variable delay circuit. |
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