I have an application that will use two TMS320C6745 DSPs. I want to have a 10/100 ethernet interface to each DSP. I am looking at using the DP83849 dual Ethernet PHY. Would it be feasible to have one of the two DSP control the MII serial Management Interface? The second DSP's Management Interface would be unused.
What is the best way to supply the RMII clock to the DSPs? Should the CLK2MAC output from the PHY be routed to both DSPs? Or would it be better to use a low skew clock buffer and send a copy of the 50MHz clock source to each DSP and the PHY and disable the CLK2MAC output?