The thing to be aware of though is that although the commonly used CVs are usually the same for most manufacturers decoders ( such as Accel. Deccel. start volts, Loco address etc) Some of the other CVs are not always the same 'number' particularly with sound decoders
I would advise that it is always best to refer to the CV list supplied with a particular Digital 'onboard' loco OR the Cv list supplied with a decoder fitted to a loco subsequently.
Always remebring of course to make a note of which loco has which decoder type in it, so that you dont have to have a look first!!!!! as I have had to do on some occasions!!