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

ID 683609
Date 10/04/2021
Public

A newer version of this document is available. Customers should click here to go to the newest version.

Document Table of Contents

5.4.2.2. IRQ Mapper

Platform Designer inserts the IRQ Mapper automatically during generation. The IRQ Mapper converts individual interrupt wires to a bus, and then maps the appropriate IRQ priority number onto the bus.

By default, the interrupt sender connected to the receiver0 interface of the IRQ mapper is the highest priority, and sequential receivers are successively lower priority. You can modify the interrupt priority of each IRQ wire by modifying the IRQ priority number in Platform Designer under the IRQ column. The modified priority is reflected in the IRQ_MAP parameter for the auto-inserted IRQ Mapper.

Figure 189. IRQ Column in Platform Designer Circled in the IRQ column are the default interrupt priorities allocated for the CPU subsystem.