Another thing I often do is google for the component with different keywords like: D13700 TUTORIAL/SCHEMATIC/DIAGRAM, etc.

Sometimes you get something from another technology and can't use much of the code, but you can check out the wiring for ideas:
http://www.cafelogic.com/download/s1...documentation/

And even then, you can sometimes get ideas about the initialization commands when the language is "readable" or the program is well commented.

I'd start with pots on R1 and R2.

Robert