Activating USB core clock disables the Ethernet link

dhiry2k · ‎2012-12-11

Posted on December 11, 2012 at 12:14

Hi,

I am working on USB and Ethernet integration with USART. My ethernet Application is running perfectly and i am inserting code for USB into it. I noticed when i enable USB core clock, The ethernet link disconnects and my LCD shows '' Network Cable is unplugged'' I dont know why this is happening ?

Anyone had the same issue? I am using STM32F207 USB and Lwip Libraries. with STM3220G-EVAL Board.

Thanks,

Dheeraj

#connectivity-usb #ethernet-interface #stm32

Tesla DeLorean · ‎2012-12-11

Posted on December 11, 2012 at 17:16

I've not heard of an issue.

You should perhaps look over the schematic and pin utilization to see if there is an interfacing conflict. Consider also if the board implements a MII or RMII interface, and where it derives it's clock.

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dhiry2k · ‎2013-01-27

Posted on January 28, 2013 at 07:01

Thanks clive ... yes there was pin conflict :)