Agilex™ 5 Known Issue List

ID 849494
Date 8/11/2025
Public

2.1.2.2. 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.

Status

Table 10.  Device Status Table
Devices Affected Planned Fix
  • A5Ex008xxxxxxxxCS
  • A5Ex013xxxxxxxxCS
None