AnsweredAssumed Answered

USB_OTG PORT IS NOT DETECTING

Question asked by Dibin G on Jan 2, 2019
Latest reply on Jan 7, 2019 by Dibin G

Hi,

We designed a monitoring system using IMX6ULL processor. USB_OTG1 port is using for loading the Kernal.

USB_OTG1 was able to detect before loading the uboot and kernal. After loading the kernal for first time (failed after copying almost complete directories) the USB port became disable. Now MFGtool does not detecting the USB port.

How can we access the USB port ?

 

Observations:

1. USB_OTG_CAP power rail is 3.2V -  after power up, this internal voltage rail is changing from 2.6V to 2.8V, 3V and then to 3.2V

2. voltage level of USB_OTG1_DP is initailly 0.5V and then reducing to 0V

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