Complex system-in-package architectures leveraging high-bandwidth long-reach die-to-die connectivity over package substrates

Abstract

A physical layer interconnect between chips/chiplets provides high bandwidth communication with low power requirements using an organic substrate such as a printed circuit board. An interface between first and second chiplets uses a separate chiplet, or a combination logic die and interconnect interface, interfacing with the interconnect. A connection between a computing device and a memory can be longer, allowing the computing device to be coupled to more memories, expansion slots, or external connections. The interconnect can route memory commands between computing devices and memories, allowing multiple and different computing devices to be coupled to each other or to multiple and different memories. The memories can perform in-memory computing using chiplets coupled thereto. The interconnect couples to possibly different computing devices and possibly different memories, such as in a rack configuration, including CPUs or GPUs. The specialized processing devices can include one or more TPUs or VPUs.