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Part Number: DP83848I-MAU-EK
I have an DP83848I-MAU-EK/NOPB board from TI. What I need to do is have data going through the phy while I expose the chip to conditions. What I did was put on the 50mhz oscillator to the board so I could go rmii mode. I am now trying to use a xilinx zed board to create an RMII MAC. It is like taking a jaguar to the 7/11 for milk. Way overkill. What I want to do is just run my bert into a DP83848I-MAU-EK/NOPB by cat6 then connect out the tx1:0; rx1:0 to a new board which will do a RMII mac loopback. Is there a simple solution I am just not seeing or thinking of?
Ethernet - Applications Engineer
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In reply to Ross Pimentel:
I only want to check the phy. Here is what I have done. I removed the 25mhz osc and put on the 50mhz. I removed the c3,c4 and y1 and installed and populated the jumper J6 to make it only RMII mode. I have the BERT running at 100M. I thought I might be able to loop R1 to T1 and R0 to T0 but it doesn't seem to work that way.
I am providing 5v to pin one on J7. It says 3.3 but is the square pin on the bottom so think the board is mislabeled. I am struggling as well to be able to talk to the PHY. I was thinking I could use the usb2mdio msp430 to talk to the PHY like I normally do with the 83867 but it never seems to find the PHY ID. Any thoughts on what I might be missing? All I need to do is run that BERT into the PHY and loop it back to the BERT.
In reply to Craig Kief:
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