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LMX2615EVM-CVAL: SYSREF output frequency

Part Number: LMX2615EVM-CVAL

Tool/software:

I am using 10 MHz sine input reference to generate 6.84GHz (via channel divider) and using the output through RFoutA.

Through RFoutB,  want to use SYSREF output to drive my supporting electronics. I want to generate SYSREF output of around 90MHz. But due to certain limitations imposed in SYSREF Divider block in TICS Pro, I am able to generate either 71MHz or 106MHz and nothing in between (Screen Shot of TICS pro settings attached).

In SYSREF Block, "include Divide" and "Div_pre" are more or less fixed to generated interpolater within the acceptable limits of 800MHz and 1600MHz. That leaves us with "SYSREF_Div" and fixed "divide by 2" blocks. With setting available I am either getting 106 MHz with SYSREF_Div = 4 or 71MHz with SYSREF_Div=6, hence unable to set in between frequency.

Is there a way to set anything in between? Can somehow fixed "divide by 2" be bypassed?

If there is a limit, is it just the software limit or limitation of actual hardware?

Do let me know if there are ways possible to have frequency nearer to 90MHz with above settings.

Regards

Deepak