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Question asked by Uma Sundaram on Dec 21, 2016
Latest reply on Dec 21, 2016 by igorpadykov

Hi all,

   We are designing a PCB with IMXUL(MCIMX6G2CVM05AA) with PF3001 and battery charger.

The USB VBUS from USB connector  is provided to "USB_OTG1_VBUS"(pin T12) of processor.Also the same USB port is used for serial download, in the PCB.


Can you please clarify the following questions on USB OTG.

Q1: Can IMX6UL detect a USB power source (USB_VBUS) available at its input, when USB cable is plugged in dynamically.This is to enable to the battery charger upon USB input power availability.

Q2: In our design USB_OTG1 is used for both battery charging and serial download.

Can a single port be used for both the purposes.If so is there any preference to use either OTG1 or OTG2.

Q3: What is the purpose "USB_OTG1_CHD" pin.The reference manual mentions that it indicates PMIC that a USB power is available.Is there any more information available on its usage.