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LPC1758 using RMII to connect switch chip

Question asked by Sonic Hsieh on Sep 3, 2018
Latest reply on Sep 11, 2018 by Sonic Hsieh

Hello All,

 

I'm using LPC1758 to connect a four port switch (using RMII, mac to phy). I already configured EMAC module and can see frames are sent out from switch ports. It seems Tx in LPC1758 EMAC is working. But Rx is not working. I print the  two Rx registers: RxProduceIndex and RxConsumeIndex. Both of them are always zero. Is that any special config will cause Tx works but Rx not work.

 

Thanks.

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