Arria® 10 SX SoC Development Kit User Guide

ID 683227
Date 11/27/2025
Public
Document Table of Contents

5.6.3. Reference Clock Source Selection

The HPS jumpers define the bootstrap options for the HPS—boot source, mode, HPS clocks settings, power-on-reset (POR) mode, and peripherals selection.

Table 24.  HPS Jumpers
Board Reference Schematic Signal Name Description
J17, J16 OSC2_CLK_SEL [1:0] Selects the source of OSC2 clock:
  • 00—Select 25 MHz clock source
  • 01—Select external source via SMA connector
  • 10—Select 33 MHz onboard oscillator
J30 HPS voltage selection
  • Short—HPS core voltage is 0.95 V
  • Open—HPS core voltage is 0.9 V