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Elyouss's avatar
Elyouss
Icon for New Contributor rankNew Contributor
4 years ago

Niosii PLL

Hello I'm a beginner in programming FPGA devices. I have to create several frequencies multiplier using PLL from an one Hertz input signal. With a nios processor I have to be able to make a program ...
ak6dn's avatar
ak6dn
Icon for Regular Contributor rankRegular Contributor
4 years ago

Is this the DE0 board you have (from TerASIC)? The original DE0 board with the CycloneIII device?

https://www.terasic.com.tw/cgi-bin/page/archive.pl?Language=English&CategoryNo=165&No=364#contents

You should download the support software from their site as it has several full demo applications.

With respect to the PLL on that FPGA in particular, the minimum input frequency it requires is 5MHz.

So if you really have a 1Hz input signal you need to think more on how it will interact with the PLL.

Elyouss's avatar
Elyouss
Icon for New Contributor rankNew Contributor
4 years ago

Thank you very much for your reply, that's the device on which I'm currently working. I already download everything I can from the terasic website haha. So, if the minimum input frequency is 5MHz and I have an 1 Hz input signal I can still finish my project or I will have to work with higher frequencies ?