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<DM3730> MUSB doesn't work in full-speed mode(device mode)

sumiko
Intellectual 2060 points
Other Parts Discussed in Thread: DM3730

Champs,

My customer claims DM3730 USB doesn't work as a full speed device mode (CDC gadget).

At 1st, the customer connects Linux PC(USB host) and DM3730 EVM(USB peripheral) directlly as a CDC ethernet mode.

Then the ping communication works fine between LinuxPC and DM3730 with high-speed mode.

Next, the customer put USB1.1 hub between LinuxPC and DM3730 EVM    (LinuxPC  --> USB1.1 hub --> DM3730 EVM)

In this case, it is expected that DM3730 USB works as a full-speed device, but the ping communication doesn't work.

 

Is there a good way to work DM3730 USB as a full-speed device ? Or is there any known issues ?

Thanks and Regards,

Sumiko Yamaji