Forum Discussion

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

Cyclone V Altera PLL Can't do 100 MHz.

Hello, I am desiging a custom board based on the Altera Cyclone V board. I've changed the board oscillator from 50 MHz to 100 MHz. I am trying to make it go throught a PLL inside QSys and then feed 1...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

--- Quote Start ---

It's not a PLL problem. You can get detail report about failing pathes in TimeQuest to narrow down the issue.

--- Quote End ---

I know it's not a PLL per se problem, I think I really made the wrong question. I would like to know the the FPGA2SDRAM / FPGA2HPS LW bridges can run at 100MHz;

I get the top falling path from the SOC System LW Bridge to the HPS System with a slack of -0.4