Let me confirm about i.MX6 and Ethernet PHY.
Can i.MX6 connect directly to Ethernet PHY ?
I will plan to use a AR8031 in my board because SABRE board is used it.
To use as reference, I have checked two schematics of MCIMX6SX-SDB and SABRE-AVB.
As a result, I found the connection between MCIMX6SX-SDB and SABRE-AVB is a different.
The difference is below:
・MCIMX6SX-SDB has direct connection.
・SABRE-AVB connects via NC7WV16.
Why the SABRE-AVB connects via buffer(NC7WV16) ?
I guess the board needs buffer because it is daughter board type.
Is it correct ?
If not, please tell me the reason.
Furthermore, if you have information, please share me about a distance which is required buffer.