Cyclone® V Hard Processor System Technical Reference Manual

ID 683126
Date 8/28/2023
Public
Document Table of Contents

26.3.1.2.4. Mask Message Direction (MDir)

  • 0= The message direction bit (Dir) has no effect on the acceptance filtering.
  • 1= The message direction bit (Dir) is used for acceptance filtering.
Important: Altera recommends always setting MDir to 1. Ignoring the message direction bit is an advanced technique that must be handled with great care.