An integrated circuit includes a central processing unit, a memory controller circuit for interfacing to system memory, and an interconnect bus controller for interfacing to an interconnect bus. The interconnect bus controller gives priority to transfer of asynchronous data during a first transfer mode...http://www.google.com/patents/US6148357?utm_source=gb-gplus-sharePatent US6148357 - Integrated CPU and memory controller utilizing a communication link having isochronous and asynchronous priority modes
