Intel® Quartus® Prime Standard Edition User Guide: Platform Designer

ID 683364
Date 12/15/2018
Public
Document Table of Contents

3.9.8. Unaligned Address Commands

Unaligned address commands are commands with addresses that do not conform to the data width of a slave. Since Avalon® -MM slaves accept only aligned addresses, Platform Designer modifies unaligned commands from AXI masters to the correct data width. Platform Designer must preserve commands issued by AXI masters when passing the commands to AXI slaves.
Note: Unaligned transfers are aligned if downsizing occurs. For example, when downsizing to a bus width narrower than that required by the transaction size, AWSIZE or ARSIZE, the transaction must be modified.