RapidIO Intel FPGA IP User Guide

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

4.5.5. Avalon® -ST Pass-Through Interface

The Avalon® -ST pass-through interface is an optional interface that is generated when you select the Avalon® -ST pass-through interface in the Transport and Maintenance page of the RapidIO parameter editor. If destination ID checking is enabled, all packets received by the Transport layer whose destination ID does not match this RapidIO IP core’s base device ID or whose ftype is not supported by this IP core’s variation are routed to the Rx Avalon® -ST pass-through interface. If you disable destination ID checking, request packets are instead routed to the Rx Avalon® -ST pass-through interface only if they have ftypes that are not supported by this IP core’s variation. After packets are routed to the Rx Avalon® -ST pass-through interface, they can be further examined by a local processor or parsed and processed by a custom user function.

The following applications can use the Avalon® -ST pass-through interface:

  • User implementation of a RapidIO function not supported by this IP core (for example, data message passing)
  • User implementation of a custom function not specified by the RapidIO protocol, but which may be useful for the system application