DVD/0522 is the setup code for the old xbox for a OneForAll brand universal remote.

So my guess is you have either a OneForAll remote or some other IR transmitter that uses a chip made or licensed by the company behind OneForAll brand.

So far as I know, they don't have built-in setup codes for the MCE protocol used by the XBOX 360. Many oneForAll remotes are upgradable (by JP1 cable or .wav file or return to OFA customer support) and the info for a JP1 or .wav file upgrade is available in many places at remotecentral and hifi-remote.com

If you as a more detailed question, I might be able to give a more useful, less generic, answer.