In a multiprocessor environment, by executing cache-inhibited reads or writes to registers, a scan communication is used to rapidly access registers inside and outside a chip originating the command. Cumbersome locking of the memory location may be thus avoided. Setting of busy latches at the outset...http://www.google.de/patents/US7392350?utm_source=gb-gplus-sharePatent US7392350 - Method to operate cache-inhibited memory mapped commands to access registers
