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iMX53 USB OTG port

Question asked by Eric Mar on Apr 22, 2015
Latest reply on Apr 29, 2015 by igorpadykov

Hi,

 

1. May I know what is the use of the USB_OTG_VBUS pin of iMX53? Should this pin be tied to the External 5V USB power?

2. And how about the VBUS pin of the MC34708 PMIC? It is described as I/O pin for "USB transceiver cable interface VBUS & OTG supply output" in the Datasheet. Should this pin be tied to the External 5V USB power as well?

3. Does anyone encounter "USB Device Not Recognized" upon connecting the iMX53 to a Computer? When this happens, it will be shown as Unknown device in the Device Manager. But sometimes it does work as per normal though.

USB_Device_Not_Recognized.PNG.png

 

Thanks & regards,

Eric

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