DP83869HM: DP83869: RGMII to SGMII bridge mode not working

Part Number: DP83869HM
Other Parts Discussed in Thread: DP83869

Tool/software:

Hi team,

We are using DP83869 PHY in bridge mode in one of our custom board. Please find the attached image for the block diagram. The PHY is used for RGMII-SGMII conversion. We have written into the following registers:

1DFh : 0x0043

C00h : 0x1140

1Fh :  0x4000.

We tried pinging Board 2 through Board 1, which was unsuccessful. We also tried to switch off the auto-neg by writing 0x0140 in register C00h, but still ping didn't happen. On reading bit 2 of FX_STS, we got 0 which means link down.

Are there any more registers to be written, kindly help us in this regard.

Regards,

Sumama Hashir