DS110DF410: CTLE compensation is too much

Part Number: DS110DF410

Hi Ti team,

I observed the DS110DF410 get stuck or PCS error on MAC interface whIle we're toggling the link partner transceiver laser output.

Now we're using mode 3 at receive configuration on DS110DF410 and we run script to toggle the link partner laser output and check the PCS error and link status on receive side.

After it did many iterations (over 3 thousand times), it got PCS error suddenly.

when it was happening,  the retimer register (0x03) shows very big and the eye is very tiny (0x270x28). It looks like it gets too much CTLE gain, does it have any way to prevent this?  

image.png