I don't recall seeing any detailed description. There is a simple description at http://www.techdesign.be/projects/011/011_waves.htm and there are CCF codes on RemoteCentral.com and at http://ir.premisesystems.com/. There are a few detailed descriptions of the NEC protocol. It was the first and was copied with minor changes by many others. Here's a datasheet for an early NEC encoder chip - http://davehouston.net/Nec6121.pdf
EDIT: BTW, I find it easier to record the codes as .wav files using a soundcard. This way you can use a wave editor to view them. See http://davehouston.net/learn.htm
OTOH, if you sample with a PIC using a phototransistor, you can get the carrier frequency and eliminate any guesswork.
Bookmarks