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DP83867E: DP83867E SGMII 1000B-T Link Up But Not Working MAC Side

Part Number: DP83867E

Hello TI.


I am having an issue using the DP83867E in SGMII mode using PS-GTR where my LED for working 1000B-T link is up so the RJ45(ABCD) side should be working just fine. The SGMII partner is a Zynq MPSoC, and the activity light does not blink when initiating a ping from the FPGA, but when initiating from the computer the RJ45 is plugged in, it does. so I know the issue is on the FPGA to PHY SGMII connection. I have attempted to probe the GTR lanes but I am limited by my probe's bandwidth, so I can't get much information other than a signal of ~600mV on the line.


Below are attached phy register dump as well as schematic.
 


image (4).png


Register dump:                   /cfs-file/__key/communityserver-discussions-components-files/138/phydump.txt