Interfacing AM3352 with USB hub

Ashika Ashok11

Other Parts Discussed in Thread: AM3352

We are interfacing AM3352 with 3 port USB hub USB2514B.

USB hub has a VBUS_DET pin which detects the state of the upstream VBUS power. Can we connect USB0_DRVVBUS to the VBUS detect pin of the hub.

0 Biser Gatchev-XID over 9 years ago

0 Ashika Ashok11 over 9 years ago in reply to Biser Gatchev-XID

we have checked the checklist and followed the below sch.

USB0_VBUS is connected to vbus_det of USB Hub. 5V is external power supply. Is this connection correct ?

We also need to know if USB0_DRVVBUS is carrying 3.3V can we connect the DRVVBUS signal directly to vbus_det of HUB without the mosfet circuitry.

0 Biser Gatchev-XID over 9 years ago in reply to Ashika Ashok11

I don't see any schematics. USB0_DRVVBUS is active high signal and will be 3.3V if your VDDSHV6 voltage rail is 3.3V.

0 Ashika Ashok11 over 9 years ago in reply to Ashika Ashok11

pls find the attached sch for earlier reply.

0 Biser Gatchev-XID over 9 years ago in reply to Ashika Ashok11

Yes, this should be OK.

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