Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
7 years ago

Is it possible to feed a MAX10 PLL with slow clock input (< 5MHz)?

Hi forum. I'm a total noob to this business, and would appreciate if you could share your knowledge on this matter: In my project I just have one available clock, and it's a NTSC "color clock" o...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
7 years ago

I would also expect the PLL locking to 3.58 MHz reference with nominal 5 MHz input. But it's not guaranteed by spec. The lock range might be affected by PVT variation.

It's also possible to implement a kind of software PLL/DLL, utilizing PLL dynamic phase shift feature.