asynchronous circuitの例文

• Petri nets are an attractive and powerful model for reasoning about asynchronous circuits.
• Examples of widely used asynchronous circuits include synchronizer flip-flops, switch debouncers and arbiters.
• The only exceptions are asynchronous circuits such as asynchronous CPUs.
• Some asynchronous circuits are already used in Sun's UltraSparc IIIi processor chip, Ebergen said.
• The "'Delay-Insensitive "'( DI ) class is the most robust of all asynchronous circuit delay models.
• He said that asynchronous circuits had recently begun gaining acceptance among skeptics trained in synchronous logic.
• However, asynchronous circuits are more difficult to design and subject to problems not found in synchronous circuits.
• Note also that some simple asynchronous circuits like pulse distributors can be built solely on majority gates.
• In asynchronous circuits the state of the device can change at any time in response to changing inputs.
• The leading symposium is the IEEE Async Symposium ( International Symposium on Asynchronous Circuits and Systems ), founded in 1994.
• *In asynchronous circuits, there is no clock, and the state of the circuit changes as soon as the input changes.
• A "'delay insensitive circuit "'is a type of asynchronous circuit which performs a digital logic operation often within a computing processor chip.
• This is because the resulting state of an asynchronous circuit can be sensitive to the relative arrival times of inputs at gates.
• Subsequent to Petri nets other models of concurrency have been developed that can model asynchronous circuits including the Actor model and process calculi.
• While he would prefer systems that are completely asynchronous, Brunvand believes that asynchronous circuits would initially find a use as handmaidens to the dominant synchronous technology.
• Synchronous sequential systems are made of well-characterized asynchronous circuits such as flip-flops, that change only when the clock changes, and which have carefully designed timing margins.
• While these CPUs were intended to make timing and power attacks more difficult, subsequent research found that timing variations in asynchronous circuits are harder to remove.
• "Whenever there is an interface, asynchronous circuit techniques will have to be used, " he said, " and this will only increase as more clock domains appear on a chip ."
• At Sun Microsystems Laboratories in Mountain View, Calif ., a dozen or so engineers are focusing on designing asynchronous circuits, said Jo Ebergen, an engineer who leads the group with Ivan Sutherland.
• Ad Peeters, a senior scientist at Philips Research who leads the group, said that several popular Philips products on the market already use asynchronous circuits, including a microcontroller used in pagers and integrated circuits for smart cards.