AN 796: Cyclone® V and Arria® V SoC Device Design Guidelines

ID 683360
Date 3/30/2022
Document Table of Contents HPS Initiated Configuration

When the device is powered and the HPS begin executing the software in the boot ROM, all the device I/O default to an input tri-state mode of operation. The boot ROM configures the dedicated boot I/O based on the sampled BSEL pins.