In an aspect, a first method of interfacing a processor and memory is provided. The first method includes the steps of (1) generating a first command and associated address of a first type that does not indicate a rank of memory targeted by the first command; (2) determining whether the memory includes...http://www.google.com/patents/US7840744?utm_source=gb-gplus-sharePatent US7840744 - Rank select operation between an XIO interface and a double data rate interface