Intel® Arria® 10 Core Fabric and General Purpose I/Os Handbook

ID 683461
Date 9/29/2022
Public
Document Table of Contents

7.4.2. Configuration Sequence in the Remote Update Mode

Figure 160. Transitions Between Factory and Application Configurations in Remote Update Mode


Upon power up or reconfiguration triggered using nCONFIG, the AS controller reads the start address from the EPCQ-L device and loads the initial configuration image, either the factory or application configuration image. If the initial image is an application configuration image and an error occurs, the controller tries to load the same initial application configuration image for three times before loading the factory configuration image. If the initial application configuration image encounters a user watchdog timeout error, the controller loads the factory configuration image. You can load a new application configuration image during factory user mode or application user mode. If an error is encountered, the controller loads the factory configuration image.

Note: When error occurs, the AS controller loads the same application configuration image for three times before reverting to factory configuration image. By that time, the total time taken exceeds 100ms and violates the PCIe boot-up time when using CvP. If your design is sensitive to the PCIe boot-up requirement, Intel recommends that you do not use the direct-to-application feature.

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