Quartus® Prime Pro Edition User Guide: Platform Designer

ID 683609
Date 4/17/2025
Public
Document Table of Contents

5.10.6.1. In-Order Transactions

To prevent reordering, Platform Designer does not transfer the transaction ID from the manager for subordinates that accept reordering depths greater than 1. Rather, Platform Designer provides a constant transaction ID of 0.

For subordinates that do not reorder, Platform Designer allows transfer of the transaction ID to the subordinate. To avoid cyclic dependencies, Platform Designer supports a single, outstanding subordinate scheme for both reads and writes. Changing the targeted subordinate before all responses return stalls the manager, regardless of the transaction ID, unless you enable the Concurrent Subordinate Access parameter, as Enabling Concurrent Subordinate Access describes.