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Dividing a clock by an even number always generates 50% duty cycle output. Sometimes it is
necessary to generate a 50% duty cycle frequency even when the input clock is divided by an
odd or non-integer number. This paper talks about implementation of unusual clock dividers.
The paper starts up with simple dividers where the clock is divided by an odd number (Divide by
3, 5 etc) and then later expands it into non-integer dividers (Divide by 1.5, 2.5 etc). The circuits
are simple, efficient and are cheaper and faster than any external PLL alternatives. This paper
also covers Verilog code implementation for a non-integer divider. |
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eetop公众号
创芯大讲堂
创芯人才网
发表于 2008-5-26 12:23:00
