RapidIO II Intel® FPGA IP User Guide

ID 683444
Date 9/28/2020
Public
Document Table of Contents

4.3.3.3.1. IP Core Actions

In response to incoming Avalon-MM requests to the Maintenance module slave interface, the RapidIO II IP core Maintenance module generates MAINTENANCE requests on the RapidIO link, by performing the following tasks:
  • For each incoming Avalon-MM read request, composes the RapidIO MAINTENANCE read request packet.
  • For each incoming Avalon-MM write request, composes the RapidIO MAINTENANCE write request packet.
  • Maintains status related to the composed MAINTENANCE packet to track responses.
  • Presents the composed MAINTENANCE packet to the Transport layer for transmission on the RapidIO link.
Note: At any time, the Maintenance module can maintain a maximum of 64 outstanding MAINTENANCE requests that can be MAINTENANCE reads, MAINTENANCE writes, or port-write requests. The Maintenance module slave port asserts the mnt_s_waitrequest signal to throttle incoming requests above the limit.