PROCESSOR-SDK-DRA8X: TDA4XV-MID USB1_VBUS in Host Mode

Ronny Kistner

Part Number: PROCESSOR-SDK-DRA8X

Hello,

we want to use USB1 port in Host Mode only.

Should we add a pulldown or pullup to USB1_VBUS?

0 Stanislav Stilyanov over 5 years ago

Hi,

USBx_VBUS must be connected to VBUS.

Note that this pin is a 3.3-V pin and the 5-V VBUS must be applied via an external divider of few 10s of kOhms.

Regards,

Stan

0 Ronny Kistner over 5 years ago in reply to Stanislav Stilyanov

Hi,

there is no VBUS - only USB1_DP/DM will be connected to an external hub via a cable. This is part of a debug toolchain.

Regards,

Ron

0 Stanislav Stilyanov over 5 years ago in reply to Ronny Kistner

Would be good VBUS (sense) to be connected to DRVVBUS. Make sure the DRVVBUS pin chosen (there are several possible) is powered by 3.3V.

I guess, it is also possible to hardwire VBUS to a 3.3V IO supply via a pullup.

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