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TUSB8041: Device enter DOWNLOAD mode NG by accorssing USB3.0 HUB

Part Number: TUSB8041

HI Sir

We have plan to implement TUSB8041 solution in our project.But we have not got TUSB8041EVM for pre-validation.

we found a issue by using oher manufacturer's HUB during our pre-validation.Please help to comfirm whether the TUSB8041 has the same issue.

The issue as belows:

Connected DEVICE, HUB, and PC as shown in the diagram,the device USB enumeration is OK.(Device is an Android board)

Then use the PC to send "adb reboot edl" command to DEVICE.normally,the USB enumeration will be redone,and the device will enter DOWNLOAD mode.

But we found some HUBs from other manufacturer will cause the device enter DOWNLOAD mode NG.

Could you please teach me the reason?

  • 您好,我们可以直接使用中文沟通。

    是这样的,如果您在使用TUSB8041过程中遇到了任何技术问题,我们都会尽力帮您去解决。

    如果在使用其他厂商的芯片中遇到了问题,可以直接联系芯片厂商的技术支持查询原因。

    因为别的厂商的芯片我们不熟悉也不做支持,请您谅解。