I'm having a bit trouble figuring this out.
I have a board and a DLL to control it but I don't get how to connect. I have TX, RX and control signals to use and thought I it's RS422 but that has CTS AND RTS. I know it should work with these 3 signals (plus power and GND) but not how to do it.
Chip on board is MKM35Z256.

 

It's a ttl/uart/usart signal. It isn't RS232 or RS422 yet. You can easily build an RS232 module, like I did to support serial comm. Or you can use the ttl directly if talking to another close IC.