The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 17, 2024
Filed:
Feb. 06, 2023
Credo Technology Group Ltd, Grand Cayman, KY;
Lei (Ray) Wu, Shanghai, CN;
Credo Technology Group Limited, Grand Cayman, KY;
Abstract
Techniques enabling multiple controllers to share a peripheral's serial interface as well as various systems and devices that may employ such techniques. One illustrative method includes configuring a controller to use an SPI (serial peripheral interface) bus for communication with a peripheral device only if a chain input terminal is asserted; and asserting a chain output terminal after the communication is complete. An illustrative system includes a peripheral device and multiple controller devices. The peripheral device has: a peripheral chip select terminal, a peripheral serial clock terminal, a peripheral controller output peripheral input (COPI) terminal, and a peripheral controller input peripheral output (CIPO) terminal. Each of the multiple controller devices has: a controller chip select terminal coupled to the peripheral chip select terminal, a controller serial clock terminal coupled to the peripheral serial clock terminal, a controller COPI terminal coupled to the peripheral COPI terminal, and a controller CIPO terminal coupled to the peripheral CIPO terminal.