Presentation
Algorithms to get the maximum operation frequency for skew-tolerant clocking schemes
Author/s | Guerrero Martos, David
Bellido Díaz, Manuel Jesús Juan Chico, Jorge Millán Calderón, Alejandro Ruiz de Clavijo Vázquez, Paulino Ostúa Arangüena, Enrique Viejo Cortés, Julián |
Department | Universidad de Sevilla. Departamento de Tecnología Electrónica |
Publication Date | 2005 |
Deposit Date | 2021-02-11 |
Published in |
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ISBN/ISSN | 0277-786X |
Abstract | Nowadays it is not possible to neglect the delay of interconnection lines. The die size is rising very fast, and the delay of the interconnection lines grows quadrically with it. Also, the fact that the gate delay keeps ... Nowadays it is not possible to neglect the delay of interconnection lines. The die size is rising very fast, and the delay of the interconnection lines grows quadrically with it. Also, the fact that the gate delay keeps getting smaller increases the importance of the delay of the interconnection lines. The delay of the clock lines is specially important: If the clock skew is underestimated and the clocking scheme is not properly designed, then the system may not work under any clock frequency. In this paper we evaluate the timing performance of three skew-tolerant clocking schemes. These schemes are the well known Master-Slave clocking scheme (MS) and two schemes developed by the authors: Parallel Alternating Latches Clocking Scheme (PALACS) and four-phase Parallel Alternating Latches Clocking Scheme (four-phase PALACS). To carry out these analysis, the authors introduce new algorithms to obtain the clock waveforms required by a synchronous sequential circuit. Separated algorithms were developed for every clocking scheme. The algorithms take a set of timing parameters as input and generate a chronogram of the circuit trying to minimise the clock period but ensuring the timing restrictions of the circuit are met for a given clock skew. Using these algorithms is it possible to draw a representation of the computation frequency as a function of the clock skew for every clock scheme. Once we have estimated the timing parameters and the skew, these representations can help us to choose the best clocking scheme for our design |
Funding agencies | Ministerio de Educación y Ciencia (MEC). España |
Project ID. | TEC-2004-00840/MIC |
Citation | Guerrero Martos, D., Bellido Díaz, M.J., Juan Chico, J., Millán Calderón, A., Ruiz de Clavijo Vázquez, P., Ostúa Arangüena, E. y Viejo Cortés, J. (2005). Algorithms to get the maximum operation frequency for skew-tolerant clocking schemes. En Microtechnologies for the New Millennium 2005 (467-478), Sevilla, España: Society of Photo-Optical Instrumentation Engineers (SPIE). |
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