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iMX8 MAC to MAC comm

Question asked by Ritesh Patel on May 12, 2020
Latest reply on May 20, 2020 by igorpadykov

Hi Igor,

 

We are also working on communication between Ethernet MAC to MAC without PHY. 

In our case, it is iMX8 to iMX8 comm over MAC. 

 

There are two modules in MAC, Transmit & Receive. 

What i understand is, we can connect Tx module signals to the Rx module signals & vice versa. 

 

MAC1_TxC --> MAC2_RxC

MAC1_Tx_CTL --> MAC2_Rx_CTL

MAC1_TxD[3:0] --> MAC2_RxD[3:0]

 

MAC1_RxC <-- MAC2_TxC

MAC1_Rx_CTL <-- MAC2_Tx_CTL

MAC1_RxD[3:0] <-- MAC2_TxD[3:0]

 

The clock config can be internal to the each MAC for TxC. Or can be tied up external clock to ENETx_REFCLK_125M_25M pin.

 

Let me know if you see any issue with the above connections.

 

Thank you.

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