Abstract:
Se dan a conocer en particular modalidades ilustrativas, dispositivos de circuitos y métodos para controlar una oscilación de voltaje. El método incluye recibir una señal en una entrada de un dispositivo de circuitos digital que incluye un nodo capacitivo. El método también incluye activar selectivamente un elemento de ajuste de nivel de voltaje para regular una ruta de descarga eléctrica del nodo capacitivo a una tierra eléctrica para evitar la descarga completa del nodo capacitivo. En una modalidad ilustrativa particular, la señal recibida puede ser una señal de reloj.
Abstract:
In particular illustrative embodiments, circuit devices and methods of co ntrolling a voltage swing are disclosed. The method includes receiving a sig nal at an input of a digital circuit device including a capacitive node. The method also includes selectively activating a voltage level adjustment elem ent to regulate an electrical discharge path from the capacitive node to an electrical ground to prevent complete discharge of the capacitive node. In a particular illustrative embodiment, the received signal may be a clock sign al.
Abstract:
In particular illustrative embodiments, circuit devices and methods of controlling a voltage swing are disclosed. The method includes receiving a signal at an input of a digital circuit device including a capacitive node. The method also includes selectively activating a voltage level adjustment element to regulate an electrical discharge path from the capacitive node to an electrical ground to prevent complete discharge of the capacitive node. In a particular illustrative embodiment, the received signal may be a clock signal.
Abstract:
In particular illustrative embodiments, circuit devices and methods of controlling a voltage swing are disclosed. The method includes receiving a signal at an input of a digital circuit device including a capacitive node. The method also includes selectively activating a voltage level adjustment element to regulate an electrical discharge path from the capacitive node to an electrical ground to prevent complete discharge of the capacitive node. In a particular illustrative embodiment, the received signal may be a clock signal.
Abstract:
En una modalidad, se describe un método que incluye recibir una señal de reloj en una cadena de retardo de un dispositivo de circuito y determinar un valor de la señal de reloj en un punto seleccionado dentro de la cadena de retardo. El método también incluye ajustar el punto seleccionado cuando el valor no indica detección de un borde de la señal de reloj.
Abstract:
In an embodiment, a method is disclosed that includes receiving a clock signal at a delay chain of a circuit device and determining a value of the clock signal at a selected point within the delay chain. The method also includes adjusting the selected point when the value does not indicate detection of an edge of the clock signal.
Abstract:
A logic device includes a data input, a scan test input, a clock demultiplexer, and a master latch. The clock demultiplexer is responsive to a clock input to selectively provide a first clock output and a second clock output. The master latch is coupled to the data input and to the scan test input and includes an output. The master latch is responsive to the first clock output of the clock demultiplexer and the second clock output of the clock demultiplexer to selectively couple the data input or the scan test input to the output.
Abstract:
A clock gating system and method is disclosed. In a particular embodiment, the system includes an input logic circuit having at least one input to receive at least one input signal and having an output at an internal enable node. A keeper circuit includes at least one switching element that is responsive to a gated clock signal and is coupled to the internal enable node to selectively hold a logical voltage level at the internal enable node. The system further includes a gating element responsive to an input clock signal and to the logical voltage level at the internal enable node to generate the gated clock signal.
Abstract:
Techniques are described that embed a digital assisted regulator with an LDO regulator on a chip without requiring a capacitor external to the chip and to regulate a voltage without undershoot. The digital assisted regulator responds to information regarding operation of the LDO regulator and to a signal that provides advance notification of a load change. When the advance notification signal is received, the digital assisted regulator pulls a circuit's supply voltage up to a chip's incoming supply voltage. When the correct operating voltage has been reached and any undershoot problem removed, the digital assisted regulator balances the current it provides with the current provided by the LDO regulator, to allow a quick response time for other load changes. Also, bandwidth of an LDO regulator may be expanded by use of an advance notice signal to increase bias current of an LDO output device to meet an upcoming load change.