ALTPLL (Phase-Locked Loop) IP Core User Guide

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

Summary of Spread-Spectrum Clocking Feature

The following table summarizes the PLL types that support the spread-spectrum clocking feature.

Table 9.  Spread-Spectrum Clocking Feature

Device

Top_Bottom

Left_Right

Enhanced PLL

Fast PLL

Cyclone Series PLL

Stratix IV

Yes

3

Yes

3

Cyclone IV

No

3 This device can accept a spread-spectrum input with typical modulation frequencies, but it cannot generate spread-spectrum clock signals internally.