This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TMS570LC4357: TMS570LC435: EMAC - PHY RMII interfacing

Part Number: TMS570LC4357


I’m using a TMS570LC4357 micro on a custom board.

I’m encountering some difficulties when trying to use the EMAC module.

The configuration I’m actually using, foresees RMII interface with a PHY Dp83848 as shown in the circuit below:

Starting from the lwIP Demo v03, I’ve replaced the PHY driver with the one related to my PHY device and I’ve changed the PINMUX connections from MII to RMII.

It seems that the MDIO is correctly interfacing the PHY, but when acquiring signals on the RMII_TXEN and RMII_TXD[1:0] lines by an oscilloscope, no kind of activity is detected although the TX ISR is called following to the ARP request.

Any suggestions for me to investigate on this?