The Pin Connection Guidelines recommend that ferrite beads be included where they are required, even if the PLL is not in use, so that any future changes can be addressed.
Altera® MAX® 10 FPGA Device Family Pin Connection Guidelines
https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/dp/max-10/pcg-01018.pdf
(search for Notes 5 or ferrite bead)
For more information on ferrite beads, see
https://www.intel.co.jp/content/dam/altera-www/global/ja_JP/pdfs/literature/an/an574_j.pdf
https://www.intel.co.jp/content/dam/altera-www/global/ja_JP/pdfs/literature/an/an583_j.pdf
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Category: Specifications
Tools: -
Devices: MAX® 10