Stratix® 10 Configuration User Guide

ID 683762
Date 4/05/2024
Document Table of Contents Enabling Dual-Purpose Pins

AVST_CLK, AVST_DATA[15:0], AVST_DATA[31:16], and AVST_VALID are dual-purpose pins. Once the device enters user mode, these pins can function either as GPIOs or as tri-state inputs.
If you use these pins as GPIOs, make the following assignments:
  • Set VCCIO of the I/O bank at 1.8 V
  • Assign the 1.8 V I/O standard to these pins

Complete the following steps to assign these settings to the dual-purpose pins:

  1. On the Assignments menu, click Device.
  2. In the Device and Pin Options dialog box, select the Dual-Purpose Pins category.
  3. In the Dual-purpose pins table, set the pin functionality in the Value column.
    Figure 11. Enabling Dual-Purpose Pins
  4. Click OK to confirm and close the Device and Pin Options
    Attention: When you use the Avalon® -ST configuration scheme the dual-purpose Avalon® -ST pins have the following restrictions:
    • You cannot use the Avalon® -ST interface for partial reconfiguration (PR).
    • You cannot use the Avalon® -ST pins in user mode in designs that include the HPS. This restriction means that you cannot use the Avalon® -ST as dual-purpose I/Os in designs that include the HPS.