PLL Integer mode vs Fractional modes in PLLs (Cyclone10 transceiver) - PLL Integer mode vs Fractional modes in PLLs (Cyclone10 transceiver) Hi All, What's a difference between the Integer mode vs Fractional modes in the transceivers located in Cyclone 10? How can I set each one of the modes? Thank you! Replies: Re: PLL Integer mode vs Fractional modes in PLLs (Cyclone10 transceiver) Hi, We do not receive any response from you to the previous question/reply/answer that I have provided. This thread will be transitioned to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread. Thank you best regards, Farabi Replies: Re: PLL Integer mode vs Fractional modes in PLLs (Cyclone10 transceiver) Hi, sorry to keep you waiting. Arria 10 FPGA has 2 types of PLL : Fractional and Integer PLL. Fractional PLL is used when you want to generate a uncommon clock frequencies with fractional numbers such as 6.625Mhz, 3.125Mhz etc clock frequency. Integer PLL is used when you want to generate a common clock frequencies like 10Mhz, 25Mhz, 125Mhz etc. how to use and set fractional PLL is shown in this link: https://www.intel.com/content/dam/altera-www/global/ja_JP/pdfs/literature/an/an661.pdf https://www.intel.com/content/www/us/en/docs/programmable/683640/current/implementing-fractional-pll-reconfiguration-33682.html and this document shows how to calculate Fractional PLL divider value during setup: https://www.intel.com/content/dam/altera-www/global/en_US/kdb/rd08062012_921/how_fractional_divisor_is_calculated_in_quartus_rev4.pdf while integer PLL is more straight forward setup, this is the documentation of it : https://www.intel.com/content/www/us/en/docs/programmable/683359/17-0/altera-phase-locked-loop-ip-core-user-guide.html If you are new to PLL in Intel FPGA, I would suggest you to get familiar with integer PLL first, then slowly move to Fractional PLL. best regards, Farabi Replies: Re: PLL Integer mode vs Fractional modes in PLLs (Cyclone10 transceiver) Any updates? Replies: Re: PLL Integer mode vs Fractional modes in PLLs (Cyclone10 transceiver) Hi, I am Farabi who will support you on this request. Let me check the documentation on the integer/fractional PLL setup information. I will come back when I have the information you requested asap. regards, Farabi