CY7C65642 not working when connecting higher power USB devices

[Vika_4562056]

Hi, I am using the CY7C65642 hub chip that is interfaced to the Jetson NANO module. The schematic is as shown below -

It shows the relevant chip (USB2.0 hub). There is a power switch connected as shown below -

Now I am connecting a T261 module to one of the Type A ports on the board. Sometimes on a soft reboot the T261 is not detected and the CY7C keeps reseting the EN pin to the current switch.

But, if I place the T261 along with even with a mouse or wifi dongle it magically works. Any feedback on this ? Have you observed this kind of behaviour,

[Sananya_14 · Accepted solution]

Hi,

For the schematic, please ensure that the crystal meets the specifications as per section 3.2 and the bulk and decoupling capacitors on the VCC pins are as per table 7 in the App Note.

-Could you please check if the OVR pin is asserted when the T261 module is connected and EN is being toggled?

-When you connect a mouse or dongle does it work independent of the port selection i.e. when these devices are connected to any port?

-Please check if the same behavior occurs when connecting the T261 on a HX2VL DVK.

Best Regards,
Sananya