The following is from the ADRV9008-1 datasheet:
Is this programmable as enabled or disabled or is this always enabled? (I can't find anything that would allow me to program this as on or off.)
Why do you want to disable the termination? It is recommended to terminate differential lines with 100ohm impedance.
If you donot want to use the SYNCIN, then you can connect these pins to ground with a pull-down resistor, or connect these pins directly to ground.
I don't want to disable the termination. I just wanted to make sure it was enabled by default. It sounds like it is so you have answered my question. Thanks.