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LMH1219: Cable Length Problem in 4K

Part Number: LMH1219
Other Parts Discussed in Thread: LMH1228


I am using your LMH1219 equalizer in my design and after careful considerations I see that I can not get more than 45m cable length in 4K applications using Belden1694A.

Here you can see my schematic design.

About PCB, as TI recommendation I decided to choose SDI trace's width 10mil and I set my stack up based on this width.

At the first step of our tests we got 20 meters cable length. We know that we should read CLI register and write it to Digital MUTEREF but with this action we just got 20 meters while we set 0b110111 to get maximum length(45m)

Please tell me what should I do to get more than 70 meters?