Abstract:
There is provided a differential ring oscillation circuit including a differential ring oscillation unit in which delay circuits, to which signals of 2 phases are input, and which delay and output the input signals of 2 phases, are connected at even stages in a ring form, first and second common-mode level detection units that detect that the input signals of 2 phases of one delay circuit at an even stage of the differential ring oscillation unit and the input signals of 2 phases of one delay circuit at an odd stage of the differential ring oscillation unit are at same predetermined levels, respectively, and first and second switches that set, to specific potentials, one of the output signals of 2 phases of the delay circuit delaying the input signals of 2 phases, when the first and second common-mode level detection units detect the same predetermined levels, respectively.
Abstract:
There is provided an information processing device including an acquirer that acquires second data obtained by converting first data constituted by bit data having a first number of bits into symbols having a second number of bits greater than the first number of bits, with respect to each of the bit data, a comparator that compares a first symbol string constituted by a plurality of symbols contained in the second data prior to reverse conversion of the acquired second data into the first data, to a second symbol string representing a code targeted for detection, and a detector that detects the first symbol string as the code targeted for detection from the second data, on the basis of the result of the comparison by the comparator.
Abstract:
An apparatus according to an embodiment of the present disclosure includes a plurality of target circuits, the number of the target circuits being more than a required number of the target circuits; a characteristic adjustment unit configured to adjust characteristics of the target circuits; and a control unit configured to control a state of the target circuits between a used state and an unused state. The control unit controls the required number of the target circuits to be in the used state and controls the rest of the target circuits to be in the unused state. The characteristic adjustment unit adjusts the characteristics with respect to the target circuits in the unused state.
Abstract:
There is provided a reception unit, including: a transition detection section configured to detect a transition of an input data signal; an oscillation section configured to generate a clock signal and vary a phase of the clock signal based on a result of detection made by the transition detection section, the clock signal having a frequency in accordance with a first control signal; a first sampling section configured to sample the input data signal based on the clock signal and thereby generate an output data signal; and a control section configured to generate the first control signal based on the input data signal, the output data signal, and the clock signal.
Abstract:
A clock data recovery circuit includes: an oscillator that outputs a clock signal; a phase comparator that outputs a signal corresponding to a phase difference between an input reception data signal and the clock signal; a divider that outputs a feedback clock signal; a first variable delay circuit that outputs a delay data signal; a second variable delay circuit that outputs a delay feedback clock signal; a frequency phase comparator that outputs a signal corresponding to a frequency difference and a phase difference between the delay data signal and the delay feedback clock signal; a lock detector that outputs a determination signal indicating whether or not the frequency difference and the phase difference are within a predetermined range; and a multiplexer that receives the determination signal and select a signal of the phase comparator and a signal of the frequency phase comparator.
Abstract:
A phase comparison circuit includes: a first flip-flop configured to receive a data signal and a clock signal; a second flip-flop configured to receive an output signal of the first flip-flop and a signal that is an inversion of logic of the clock signal; a delay circuit configured to give delay time to the data signal, in which the delay time is equal to or longer than signal delay time from a clock terminal of the first flip-flop to a Q output terminal of the first flip-flop; a first exclusive OR circuit configured to receive an output signal of the delay circuit and the output signal of the first flip-flop; and a second exclusive OR circuit configured to receive the output signal of the first flip-flop and an output signal of the second flip-flop.
Abstract:
There is provided an information processing device including an acquirer that acquires second data obtained by converting first data constituted by bit data having a first number of bits into symbols having a second number of bits greater than the first number of bits, with respect to each of the bit data, a comparator that compares a first symbol string constituted by a plurality of symbols contained in the second data prior to reverse conversion of the acquired second data into the first data, to a second symbol string representing a code targeted for detection, and a detector that detects the first symbol string as the code targeted for detection from the second data, on the basis of the result of the comparison by the comparator.
Abstract:
There is provided an information processing device including an acquirer that acquires second data obtained by converting first data constituted by bit data having a first number of bits into symbols having a second number of bits greater than the first number of bits, with respect to each of the bit data, a comparator that compares a first symbol string constituted by a plurality of symbols contained in the second data prior to reverse conversion of the acquired second data into the first data, to a second symbol string representing a code targeted for detection, and a detector that detects the first symbol string as the code targeted for detection from the second data, on the basis of the result of the comparison by the comparator.
Abstract:
A phase comparison circuit includes: a first flip-flop configured to receive a data signal and a clock signal; a second flip-flop configured to receive an output signal of the first flip-flop and a signal that is an inversion of logic of the clock signal; a delay circuit configured to give delay time to the data signal, in which the delay time is equal to or longer than signal delay time from a clock terminal of the first flip-flop to a Q output terminal of the first flip-flop; a first exclusive OR circuit configured to receive an output signal of the delay circuit and the output signal of the first flip-flop; and a second exclusive OR circuit configured to receive the output signal of the first flip-flop and an output signal of the second flip-flop.
Abstract:
A clock data recovery circuit includes: an oscillator that outputs a clock signal; a phase comparator that outputs a signal corresponding to a phase difference between an input reception data signal and the clock signal; a divider that outputs a feedback clock signal; a first variable delay circuit that outputs a delay data signal; a second variable delay circuit that outputs a delay feedback clock signal; a frequency phase comparator that outputs a signal corresponding to a frequency difference and a phase difference between the delay data signal and the delay feedback clock signal; a lock detector that outputs a determination signal indicating whether or not the frequency difference and the phase difference are within a predetermined range; and a multiplexer that receives the determination signal and select a signal of the phase comparator and a signal of the frequency phase comparator.