Intel® Cyclone® 10 GX Transceiver PHY User Guide

ID 683054
Date 4/14/2023
Document Table of Contents Fractional PLL (fPLL)

A fractional PLL (fPLL) is an alternate transmit PLL that generates clock frequencies for up to 12.5 Gbps data rate applications. fPLLs support both integer frequency synthesis and fine resolution fractional frequency synthesis. Unlike the ATX PLL, the fPLL can also be used to synthesize frequencies that can drive the core through the FPGA fabric clock networks.