Intel® Quartus® Prime Pro Edition User Guide: Design Constraints

ID 683143
Date 9/26/2022
Public

A newer version of this document is available.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

Document Table of Contents

4.2.5. Entering Pin Assignments in HDL Code

You can use synthesis attributes or low‑level I/O primitives to embed I/O pin assignments directly in your HDL code. When you analyze and synthesize the HDL code, the information is converted into the appropriate I/O pin assignments. You can use either of the following methods to specify pin‑related assignments with HDL code:

  • Assigning synthesis attributes for signal names that are top‑level pins
  • Using low‑level I/O primitives, such as ALT_BUF_IN, to specify input, output, and differential buffers, and for setting parameters or attributes