AM6422: USB root hub support

Harsha Sukeerthi C N

Prodigy 90 points

Part Number: AM6422

Tool/software:

Hi,

Couple of questions on AM64x USB support, as AM64x supports up to 64 slots and has root hub capability:

Details on hardware considerations when connecting more than one device to port.
If I have connected two ports, one to USB device and one to cellular modem, I can still boot from USB at startup (assuming by boot pins are set to USB host)? Or additional USB switches are needed?

Regards,

Harsha

over 1 year ago

0 Kallikuppa Sreenivasa over 1 year ago

TI__Guru**** 215600 points

Hello Harsha

Thank you for the query.

Are you able to provide a block diagram on the implementation approach.

Based on the above i assume you are looking to connected a modem _ USB DFU on the same port Ex - USB0.

Regards,

Sreenivasa

0 Harsha Sukeerthi C N over 1 year ago in reply to Kallikuppa Sreenivasa

Prodigy 90 points

Hi Sreenivasa,

Our current design is:

Which involves connecting USB hub in between AM6422 and USB devices, and using additional USB switch which facilitates boot from USB (where USB is directly connected to AM64 pins, and processor toggles GPIO to enable routing via USB hub once it has booted into rootfs).

We would like to reduce this to: