Abstract:
A method of programming an integrated circuit to operate in a selected operating mode includes assigning different resistance values to correspond to different operating modes of the integrated circuit, wherein the different resistance values are non-zero finite values. The integrated circuit is programmed to operate in one of the modes based on a corresponding one of the different resistance values presented to a terminal of the integrated circuit.
Abstract:
A bus-based logic block for an integrated circuit includes a provision for placing an arbitrary constant onto a data bus in the logic block. An exemplary logic block has multi-bit first and second inputs and a multi-bit output. The logic block includes a multi-bit multiplexer circuit, a multi-bit programmable logic circuit, and a constant generator circuit. The multiplexer circuit has a multi-bit first input coupled to a multi-bit first input of the logic block, a multi-bit second input, and a multi-bit output. The programmable logic circuit has a multi-bit first input coupled to the output of the multiplexer circuit, and a multi-bit output. The constant generator circuit has a multi-bit output coupled to the second input of the multiplexer circuit. Each bit of the logic block may be commonly controlled with all other bits of the logic block.
Abstract:
A buffer device coupled to at least one input/output port of an integrated circuit has a plurality of control inputs configured to receive configuration programming information. The at least one input/output circuit is capable of: (a) being configured in a directional sense of communication by the configuration programming information, (b) being configured as an input circuit which can be further configured to provide input logic switching level thresholds according to the configuration programming information, and (c) being configured as at least one output circuit which can be further configured to provide an output drive strength according to the configuration programming information.
Abstract:
A logic gate is adapted to implement logical expressions. The logic gate includes at least one input that is adapted to receive an input signal and at least one control signal. At least one of the input signal and the control signal is a noise signal. At least one output is adapted to produce an output signal. A nonlinear updater operates as a dynamically configurable element and produces multiple different logic gates as selected by the control signal based at least in part on the noise signal. The nonlinear updater is electrically coupled to the input and is also electrically coupled to the output. The nonlinear updates is configured to apply a nonlinear function to the input signal in response to the control signal to produce the output signal representing a logical expression being implemented by one of the multiple different logic gates on the input signal.
Abstract:
A pad input signal processing circuit includes a control unit for setting a level of a pad output terminal to which a first control signal is input in response to a power up signal, and a signal output unit for outputting a command signal in response to a signal of the pad output terminal and a second control signal.
Abstract:
A verification support system for supporting logic verification of a circuit including a transmitter clock domain and a receiver clock domain, the transmitter clock domain, the system includes a detector for receiving data to be transmitted from the transmitter clock domain, and for detecting a fluctuation of the received data due to any timing fluctuation responsive to the transmitter clock. The system includes an identification unit to identify whether or not any fluctuation of the data determined by the detector is propagated to the output of the combinational logic on the basis of propagation of the received data through at least one of logic gates of the receiver clock domain to combinational logic so as to determine any fluctuation of data that is to be inputted to the combinational logic.
Abstract:
A logic gate is adapted to implement logical expressions. The logic gate includes at least one input that is adapted to receive an input signal and at least one control signal. At least one of the input signal and the control signal is a noise signal. At least one output is adapted to produce an output signal. A nonlinear updater operates as a dynamically configurable element and produces multiple different logic gates as selected by the control signal based at least in part on the noise signal. The nonlinear updater is electrically coupled to the input and is also electrically coupled to the output. The nonlinear updates is configured to apply a nonlinear function to the input signal in response to the control signal to produce the output signal representing a logical expression being implemented by one of the multiple different logic gates on the input signal.
Abstract:
Some embodiments provide a method of performing circuit synthesis that receives a design that has a function with several inputs. The method identifies a set of early arriving inputs of the function and performs a function decomposition on the function based on one of the early arriving inputs. In some embodiments, the method estimates the number of circuits a signal has to travel through to reach each input of the function and selects a set of inputs with signals that travel through fewer numbers of circuits compared to signals of inputs that are not selected. In some embodiments in which the design has more than a particular number of inputs, the method recursively identifies early arriving signals and performs function decomposition until function decomposition results in a set of functions all of which with fewer than the particular number of inputs. In some embodiments, the function decomposition is Shannon decomposition.
Abstract:
A buffer device coupled to at least one input/output port of an integrated circuit has a plurality of control inputs configured to receive configuration programming information. The at least one input/output circuit is capable of: (a) being configured in a directional sense of communication by the configuration programming information, (b) being configured as an input circuit which can be further configured to provide input logic switching level thresholds according to the configuration programming information, and (c) being configured as at least one output circuit which can be further configured to provide an output drive strength according to the configuration programming information.