摘要:
In an embodiment, a delay circuit comprises a delay loop controller outputting a signal obtained by operating a start signal and a delayed feedback clock signal output from outside the delay loop controller; and a loop counter configured to determine whether a predetermined delay time has elapsed since the start signal was input according to the delayed feedback clock signal and a predetermined loop count.
摘要:
A circuit is provided. The circuit includes a single-photon avalanche diode. The circuit further includes a delay element comprising a first regulator and a second regulator, each of which is independently selectable based on a selection signal applied to a selection terminal of the delay element. The delay element is configured to receive, at an inverting section, an event signal indicative of an avalanche event in the single-photon avalanche diode. Furthermore, the delay element is configurable in one of two distinct delay resolution regimes, each corresponding to only one edge of the event signal being actively delayed by the delay element when one of the first regulator and the second regulator is enabled and the other one of the first regulator and the second regulator is turned off.
摘要:
A delay generator comprises at least one programmable resistor RPCM made of a chalcogenide-based phase-change material, said resistor RPCM being initialized, so as to generate a delay, in a way such that the resistance of the resistor RPCM equals a pre-set initial value R0 and such that the chalcogenide is in the amorphous phase, and a comparator comparing a reference electrical quantity that is stable over time with a variable electrical quantity representative of the resistance of the programmable resistor RPCM, the comparator generating a singularity signal s, said singularity being generated when the difference between the two electrical quantities changes sign.
摘要:
A sample-and-hold circuit for generating a variable sample delay time of a transformer includes a discharge detection unit, a sample delay time generation unit, and a comparator. The discharge detection unit generates a first voltage according to a first turning-on signal and a first reference current. Length of the first turning-on signal is varied with a discharge time of a present period of the transformer. The sample delay time generation unit generates a second voltage according to the first turning-on signal and a second reference current. The comparator generates a sample signal to a control circuit of the transformer according to a first voltage corresponding to a previous period of the transformer and a second voltage corresponding to the present period of the transformer. The first reference current is K times the second reference current, and 0
摘要:
A sample-and-hold circuit for generating a variable sample delay time of a transformer includes a discharge detection unit, a sample delay time generation unit, and a comparator. The discharge detection unit generates a first voltage according to a first turning-on signal and a first reference current. Length of the first turning-on signal is varied with a discharge time of a present period of the transformer. The sample delay time generation unit generates a second voltage according to the first turning-on signal and a second reference current. The comparator generates a sample signal to a control circuit of the transformer according to a first voltage corresponding to a previous period of the transformer and a second voltage corresponding to the present period of the transformer. The first reference current is K times the second reference current, and 0
摘要:
To provide a time constant circuit and the like capable of acquiring a characteristic of an output voltage that attenuates gradually after attenuating steeply, compared to a characteristic that attenuates monotonously. The time constant circuit includes: a series/parallel circuit formed by serially connecting a plurality of parallel circuits each formed with a resistance element and a capacitance element between a first terminal and a second terminal; and a voltage-dividing resistance element connected between a third terminal connected to the second terminal and a fourth terminal. A first parallel circuit is formed with a first resistance element and a first capacitance element, a second parallel circuit with a second resistance element and a second capacitance element, and an n-th parallel circuit with an n-th resistance element and an n-th capacitance element. Note that “n” is the number of the parallel circuits and it is an integer of 2 or larger.
摘要:
A delay generator comprises at least one programmable resistor RPCM made of a chalcogenide-based phase-change material, said resistor RPCM being initialized, so as to generate a delay, in a way such that the resistance of the resistor RPCM equals a pre-set initial value R0 and such that the chalcogenide is in the amorphous phase, and a comparator comparing a reference electrical quantity that is stable over time with a variable electrical quantity representative of the resistance of the programmable resistor RPCM, the comparator generating a singularity signal s, said singularity being generated when the difference between the two electrical quantities changes sign.
摘要:
A power efficient multiplexer. In accordance with a first embodiment, a power efficient multiplexer comprises a transmission gate structure for selectively passing one of a plurality of input signals and a stacked inverter circuit for inverting the one of a plurality of input signals. Both the stacked inverter and the transmission gate provide beneficial reductions in static power consumption in comparison to conventional multiplexer designs.
摘要:
A variable delay circuit has a simple configuration for being incorporated in a timing generator to control a delay time in real time and assure a timing margin. The variable delay circuit of the timing generator includes a delay circuit having a plurality of cascaded clock buffers; a plurality of cascaded data buffers; and data holding circuits for outputting data to the data buffers in accordance with the clock from the delay circuit. The delay amount added to the data by the data buffers is made identical to the delay amount added to the clock by the clock buffers.
摘要:
Output clock adjustment for a digital I/O between physical layer devices and media access controller. A method is disclosed for transferring data received on the input of a physical layer device from a transmission medium to an output associated with the physical layer device and to a media independent layer, the transferred data associated with transferred timing information from the physical layer device to the media independent layer. A receive clock is generated and then the data transitions in the received data are synchronized to at least one edge of the receive clock to provide synchronized receive data. The synchronized received data is then transmitted to the media independent layer. The generated receive clock is delayed by a predetermined clock delay to provide a delayed receive clock, and wherein the data transitions in the synchronized receive data is positioned relative to the rising edge of the delayed receive clock at a predetermined position therein following the rising edge thereof. The delayed receive clock transmitting with the transmitted synchronized receive data.