Agilex™ 5 ES Device Errata and User Guidelines

ID 825514
Date 12/09/2024
Public
Document Table of Contents

2.2.14. USB 3.1 Controller Device Drops eSS ISOC Data if the ITP Delta Value is Greater than 63 units

Description

This issue occurs when the USB 3.1 controller is in device mode and positioned three or more hierarchy levels away from the external host controller. In this situation, the eSS device's ISOC endpoints do not function. You might experience data drops if you connect more than 63 USB devices in a USB hub tree with more than 3 levels.

Workaround

Connect the device up to 2 levels away from the external host controller.