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Design for Realizing Arbitrary Fractional Divider Based on FPGA which Duty Cycle is up to 50%
Abstract:
This paper proposes a novel method for realizing arbitrary fractional divider based on FPGA. Analyzing the limitations of the existing frequency-divided methods, a new model which consists of two-level dividers is put forward. An arbitrary frequency-divided clock output can be obtained by this method approaching 50% of duty cycle. When the division factor is greater than 128, the duty cycle can be very close to 50% of the clock output. This method is proved to be feasible on the FPGA chip of ALTERA.
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1653-1657
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Online since:
August 2013
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© 2013 Trans Tech Publications Ltd. All Rights Reserved
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