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Ethernet STM32F107 + DM9161B PHY Problems

hfuerstenberger9
Associate

‎2010-10-27 12:19 AM

Posted on October 27, 2010 at 09:19

Ethernet STM32F107 + DM9161B PHY Problems

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2 REPLIES 2
js23
Associate III

‎2011-05-17 05:13 AM

Posted on May 17, 2011 at 14:13

First thing I would do: Make sure that the access to PHY management registers is working and then switch the PHY to loopback mode. When sending/receiving is OK in this mode, the problem cannot be on RMII side and must be on the analog side.

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hfuerstenberger9
Associate

‎2011-08-01 12:07 AM

Posted on August 01, 2011 at 09:07

You were right. After some time, i put some work on the open issue with the ethernet. And i found the solution.

The problem was the initialisation from the PHY. There was a problem with switch from MII to RMII Mode. Only after Reset the mode input pin was latched in to configure the PHY. In the datasheet was written, that also writting to a specific register could change the modes. But the software switch doesn't work!!

But now i have it working. Fine!

Best regards

Holger

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