Happiness in a chip

If I could only have 2 pedals for the rest of my life, I would take a reverb and delay pedal. I didn’t realize how a delay pedal worked until I attempted to make a few of them. I have found a life long relationship with the PT2399 chip and yearn for more insight on the little 16 legged beast. This is the IC behind many delays on the market and it is dirt cheap. Here is the schematics of a PT2399.

Here is the datasheet