[time-nuts] 5 MHz 1 PPS divider

christopher hoover ch at murgatroid.com
Tue Apr 15 19:57:51 EDT 2008


John,

 

You may want to try the CPLD divider code I sent you many moons ago.  It'll
divide 5MHz down to 1PPS with no problem at all.  The output jitter ought to
be decent and easy to calculate.

 

I often use that code on a Reflock II board, because it has a nice HF input
conditioner in addition to power regs and JTAG connector.

 

Reflock II is not bad, but I am sure we could spin a board that work even
better for  general time-nut nuttiness(*) without a lot of difficulty.
Assuming of course there was sufficient interest .

 

-ch

 

(*)I would prefer Xilinx but I can live with Altera.

 



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