ALTPLL (Phase-Locked Loop) IP Core User Guide

ID 683732
Date 6/16/2017
Public
Document Table of Contents

PLL Output Counter Cascading

In 28 nm devices, a C-counter input can be either a VCO output or the cascaded output of a neighboring C-counter. Cascading C-counters increase the possible division factor, enabling very low frequency PLL output clocks.