Intel® Quartus® Prime Pro Edition User Guide: Third-party Synthesis

ID 683122
Date 3/28/2022
Public

A newer version of this document is available.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

Document Table of Contents

1.6.5.2. Preventing the Precision Synthesis Software from Adding an I/O Pad on an Individual Pin

To prevent I/O pad insertion on an individual pin when you are using a black box, such as DDR or a phase-locked loop (PLL), at the external ports of the design, perform the following steps:

  1. Compile your design.
  2. Use the Precision Synthesis GUI to select the individual pin and turn off I/O pad insertion.
Note: You also can make this assignment by attaching the nopad attribute to the port in the HDL source code.