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clk monitoring & switching

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lokeshbhatt

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respected sir
anyone can tell me i m having clk input of 80MHz. now what i want is i want monitor this signal & whenever it goes below 1MHz than i want to switch new clk that is 1MHz.now what circuit is required plz help me
 

marcbarker

New Member
How about route the 80 MHz clock via a PLL, and configure the PLL to 'bottom out' at 1 MHz, use the PLL's lock detector as a Flag
 
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