Memory apparatus and methods transmit or receive a first portion of a check code in a first frame and a second portion of the check code in a second frame. The check code may be for all or a portion of the first frame, the second frame, or any other frame. Other embodiments are described and claimed...http://www.google.com/patents/US7395485?utm_source=gb-gplus-sharePatent US7395485 - Check codes mapped across multiple frames
