Silicon Laboratories has been granted a patent for a multi-bus protocol memory controller that uses shim circuits to translate between different bus protocols in a System on a Chip (SoC). This innovation reduces the need for bridges in the SoC and enhances performance by interfacing with any bus protocol through the inclusion of a shim circuit. GlobalData’s report on Silicon Laboratories gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on Silicon Laboratories, Low Energy IoT network protocols was a key innovation area identified from patents. Silicon Laboratories's grant share as of May 2024 was 50%. Grant share is based on the ratio of number of grants to total number of patents.
Memory controller for multiple bus protocols with shim circuits

A recently granted patent (Publication Number: US11995007B1) discloses a memory controller designed to handle memory transactions from multiple bus ports utilizing different bus protocols. The controller includes a fabric with demultiplexers and arbiters, each associated with specific bus ports and RAM banks, respectively. These components prioritize and route memory transactions using a common fabric interconnect protocol. Additionally, the memory controller features shim circuits to efficiently translate various bus protocols to the fabric interconnect protocol with minimal delay, ensuring seamless communication between different systems.
Moreover, the patent extends to a System on a Chip (SoC) architecture incorporating the memory controller. The SoC comprises multiple subsystems utilizing different bus protocols, each connected to a respective bus port on the memory controller. Notably, bridges are not required to connect the subsystems to the memory controller, streamlining the communication process. The SoC may include a host subsystem, bridges to connect subsystems, and even additional subsystems with distinct bus protocols. The memory controller within the SoC utilizes the fabric interconnect protocol and integrates shim circuits for efficient protocol translation, enhancing overall system performance and interoperability.
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