DP83869HM: Copper to SGMII Problem

Hello,

We have configured and strapped DP chip to work as copper to SGMII at 100mbps (not 1000mvps). 

Only Op Mode 1 and 2 are pulled up and only ANEGSEL _1 is also pulled up. 

Also, the following register values were entered:

Let register 0x1DF = 0046

Let register 0x0 = 1140

Let register 0x09 = 0800

Let register 0x10 = 5048

Let register 0xC00 = 2100

Let register 0x1F = 4000

Everything looks good but SGMII link is not up. 

Register C01 still shows link down. 

We found that register C00 always goes to 1140 instead of staying on the required 2100 (to maintain 100mbps). 

The 100baseTX link is up at 100mbps.

We need the SGMII link to be up at 100mbps as well. 

Register dumps attached read several times.

Please help ASAP. 

Thanking you. 

Regards

Rajesh