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:
Nov. 19, 2019
Filed:
Oct. 02, 2017
Qualcomm Incorporated, San Diego, CA (US);
Qualcomm Incorporated, San Diego, CA (US);
Abstract
Link role determination in a dual-mode Peripheral Component Interconnect express (PCIe) device is disclosed. In this regard, determining a link role for a dual-mode PCIe device involves configuring the dual-mode PCIe device to operate in a root complex (RC) mode or an endpoint mode. The dual-mode PCIe device first performs a configuration and initiation sequence on a wire-based PCIe link in the RC mode. If the configuration and initiation sequence on the wire-based PCIe link is unsuccessful, then the dual-mode PCIe device invokes a random delay and switches to the endpoint mode at expiration of the random delay. By determining a link role of the dual-mode PCIe device based on the configuration and initiation sequence, it is possible to configure dynamically the dual-mode PCIe device to operate in the RC mode or the endpoint mode, thus allowing flexible configuration of the dual-mode PCIe device based on various application scenarios.