摘要:
One or more techniques and systems for a divider-less phase locked loop (PLL) and associated phase detector (PD) are provided herein. In some embodiments, a pulse phase detector (pulsePD) signal, a voltage controlled oscillator positive differential (VCOP) signal, and a voltage controlled oscillator negative differential (VCON) signal are received. An up signal and a down signal for a first charge pump (CP) and an up signal and a down signal for a second CP are generated based on the pulsePD signal, the VCOP signal, and the VCON signal. For example, CP signals are generated to control the first CP and the second CP, respectively. In some embodiments, CP signals are generated such that the CPs facilitate adjustment of a zero crossing phase of the VCON and VCOP signals with respect to the pulsePD signal. In this manner, a divider-less PLL is provided, thus mitigating PLL power consumption.
摘要:
One or more techniques and systems for a divider-less phase locked loop (PLL) and associated phase detector (PD) are provided herein. In some embodiments, a pulse phase detector (pulsePD) signal, a voltage controlled oscillator positive differential (VCOP) signal, and a voltage controlled oscillator negative differential (VCON) signal are received. An up signal and a down signal for a first charge pump (CP) and an up signal and a down signal for a second CP are generated based on the pulsePD signal, the VCOP signal, and the VCON signal. For example, CP signals are generated to control the first CP and the second CP, respectively. In some embodiments, CP signals are generated such that the CPs facilitate adjustment of a zero crossing phase of the VCON and VCOP signals with respect to the pulsePD signal. In this manner, a divider-less PLL is provided, thus mitigating PLL power consumption.
摘要:
A phase frequency detector circuit includes an edge detector circuit, a plurality of phase frequency detector sub-circuits, and a decision circuit. The edge detector circuit is configured to receive a first input signal and a second input signal. The decision circuit is configured to detect whether a blind condition exits based on outputs of the edge detector circuit and outputs of the plurality of phase frequency detector sub-circuits. Responsive to a result of the decision circuit, a corresponding frequency detector sub-circuit of the plurality of phase frequency detector sub-circuit is configured to provide signals for use in determining a phase difference between the first input signal and the second input signal.
摘要:
A phase locked loop includes a phase difference detector configured to receive a reference frequency and a divider frequency and output a phase difference signal. The phase locked loop includes a code generator configured to receive the reference frequency and the phase difference signal, and output a coarse tuning signal and a reset signal. The phase locked loop includes a digital loop filter configured to receive the phase difference signal and output a fine tuning signal. The phase locked loop includes a voltage control oscillator configured to receive the coarse and fine tuning signals, and output an output frequency. The phase locked loop includes a divider configured to receive the reset signal, a divider number control signal and the output frequency, and output the divider frequency. The phase locked loop includes a delta-sigma modulator configured to receive a divisor ratio and the reset signal, and output divider number control signal.
摘要:
A die stack of an integrated circuit includes a plurality of dies. Each die in the die stack includes a phase lock loop (PLL). The PLLs in each of the dies share a loop filter and other corresponding circuits.
摘要:
A lock detector for a PLL circuit includes a first signal counting circuit, a second signal counting circuit, a comparator, and a lock status unit. The first signal counting circuit is configured to define a plurality of observation periods according to a first oscillating signal and a predetermined cycle value. The second signal counting circuit is configured to determine a maximum counter value according to a second oscillating signal within each of the observation periods, and the second oscillating signal is generated in relation to the first oscillating signal. The comparator is configured to determine, for each of the observation periods, whether the maximum counter value equals the predetermined cycle value. The lock status unit is configured to generate a lock signal based on the maximum counter value being equal to the predetermined cycle value for a predetermined number of consecutive ones of the observation periods.
摘要:
Interposer and semiconductor package embodiments provide for the isolation and suppression of electronic noise such as EM emissions in the semiconductor package. The interposer includes shield structures in various embodiments, the shield structures blocking the electrical noise from the noise source, from other electrical signals or devices. The shields include solid structures and some embodiments and decoupling capacitors in other embodiments. The coupling structures includes multiple rows of solder balls included in strips that couple the components and surround and contain the source of electrical noise.
摘要:
A combined exercise management and entertainment unit includes a sensor for sensing a user's body state during exercise and producing an exercise signal to a microprocessor, so as to calculate the user's calorie consumption during exercise each time and the accumulated calorie consumption; a personal characteristics database for storing data of a user's body physical characteristics; an exercise course memory for storing exercise courses set by the user, including the time period, item, and duration of an exercise to be done; a setting unit for the user to set the data of body physical characteristics to be stored in the personal characteristics database; and a play unit having an entertainment information memory for storing a plurality of entertainment information entries, which correspond to the exercise items set by the user and may be selectively played corresponding to the exercise item being done.
摘要:
A notebook computer battery power level inspection device, which is co-constructed with system indicators of the notebook computer, employs an embedded controller of the notebook computer to detect the status of a battery test signal and, in response thereto, generate a signal representing the power level of the battery. Upon detection of the battery test signal, the embedded controller drives individual system indicators of an indicator system of the notebook computer to light or flash for indicating the power level of the battery. The battery test signal is generated by actuating a test switch or by actuating a predetermined one of the keys of a keyboard of the notebook computer.
摘要:
A computer input apparatus with health care function and a health care method are disclosed. The computer input apparatus is connected to a computer through a transmission path. The computer input apparatus comprises at least a light emitting element, an optical track detection module, a measurement module and a transmission control module. A light beam is provided by the light emitting element. The optical track detection module includes a first receiving element for receiving the light beam to detect a displacement signal of the computer input apparatus. The measurement module includes a second receiving element for receiving the light beam to detect a physiology signal of fingertips.