RapidIO Intel FPGA IP User Guide

ID 683884
Date 9/15/2021
Public
Document Table of Contents

4.2.1.1. Avalon® System Clock

The Avalon® system clock drives the Transport and Logical layer modules; its frequency is nominally the same frequency as the Physical layer's internal clocks txclk and rxclk, but it can differ by up to ±50% provided the Avalon® system clock meets fMAX limitations. This clock is called sysclk. Platform Designer (Standard) allows you to export the clock signal with a name of your choice.
Note: You must drive the Avalon® system clock from a clock source that is running reliably when the RapidIO IP core comes out of reset.