AM3351: USB0_VBUS treatment

Hitoshi Sugawara

Part Number: AM3351

Hi Experts,

Is it OK for USB0_VBUS left open if AM3351 works as a USB device and it does not use OTG?
Or 5V should be connected to USB0_VBUS?

There should be DP and DM connection only.
A customer would like to avoid to add some external parts for surge countermeasures.

Thank you for your check.
Best regards,
Hitoshi

over 3 years ago

0 Bin Liu over 3 years ago

TI__Guru*** 125676 points

Hi Hitoshi-san,

When AM3351 USB works in device mode, its USBx_VBUS shall connect to the USB connector which has 5V VBUS provided by the USB host. Otherwise, AM3351 USB won't be functional.

0 Hitoshi Sugawara over 3 years ago in reply to Bin Liu

TI__Mastermind 18650 points

Hi Bin-san,

Thank you so much for your prompt clarification.

Best regards,
Hitoshi

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AM3351: USB0_VBUS treatment