نتایج جستجو برای: clocking
تعداد نتایج: 739 فیلتر نتایج به سال:
complies with the regulations of the University and meets the accepted standards with respect to originality and quality. In this thesis we propose a set of independent techniques in the overall concept of LC resonant clocking where each technique reduces power consumption and improve system performance. Low-power design is becoming a crucial design objective due to the growing demand on portab...
In this paper we introduce and characterize a novel circuit design for low power clock distribution for quantumdot cellular automata (QCA) systems. The characterization of the clocking circuitry includes an evaluation of: the coupling capacitances among the wires and with the ground plane; the dissipative effects of the wires and the substrate; the phase shift between neighboring wires; and the...
A major problem with low-level functional verii-cation of any hierarchical system is the explosion of reachable states created when clocking mechanisms are incorporated into the model. These additional states make veriication more diicult, usually to the point that veriication at such a low level is not feasible. Transforms have been developed to take a nonhierarchi-cal model with a complex clo...
In this paper we apply a recently formulated general timing model of synchronous operation to the special case of latch-controlled pipelined circuits. The model accounts for multiphase synchronous clocking, correctly captures the behavior of level-sensitive latches, handles both shortand longpath delays, accommodates wave pipelining, and leads to a comprehensive set of timing constraints. Pipel...
Quantum-dot cellular automata ~QCA! may provide a novel way to bypass the transistor paradigm to form ultrasmall computing elements. In the QCA paradigm information is represented in the charge configuration of a QCA cell, which maps naturally to a binary model. Molecular QCA implementations are being explored where the quantum dots in the cell take the form of redox centers in a molecule. Cloc...
Linear-accelerator-based sources will revolutionize ultrafast x-ray science due to their unprecedented brightness and short pulse duration. However, time-resolved studies at the resolution of the x-ray pulse duration are hampered by the inability to precisely synchronize an external laser to the accelerator. At the Sub-Picosecond Pulse Source at the Stanford Linear-Accelerator Center we solved ...
The family of stream ciphers MICKEY (which stands for Mutual Irregular Clocking KEYstream generator) is aimed at resource-constrained hardware platforms. It is intended to have low complexity in hardware, while providing a high level of security. It uses irregular clocking of shift registers, with some novel techniques to balance the need for guarantees on period and pseudorandomness against th...
The clock distribution network in digital integrated circuits distributes the clock signal which acts as a timing reference controlling data flow within the system. Since the clock signal has highest capacitance and operates at high frequencies, the clock distribution network consumes a large amount of total power in synchronous system. So, a new flip-flop is proposed in a low-swing resonant cl...
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