RapidIO II Intel® FPGA IP User Guide

ID 683444
Date 9/28/2020
Document Table of Contents
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3.2.1. Enable 16-Bit Device ID Width

The Enable 16-bit device ID width setting specifies a device ID width of 8-bit or 16-bit. RapidIO packets contain destination ID and source ID fields, which have the specified width. If this IP core uses 16-bit device IDs, it supports large common transport systems.

The two parameter values do not cause symmetrical behavior. If you turn on this option, the IP core can still support user logic that processes packets with 8-bit device IDs. You can parameterize the IP core to route such packets to the Avalon® -ST passthrough interface, where user logic might handle it. However, if you turn off this option, the RapidIO II IP core drops all incoming packets with a 16-bit device ID.