Qualcomm Incorporated

Dilip Venkateswaran Murali

Murali Krishna

Thiyagarajan Selvam

Tony Truong

Sujeev Dias

A system includes an interface circuit configured to provide an interface with a link, and a controller. The controller is configured to receive one or more bandwidth requests from one or more clients, and determine at least one of a link speed and a link width for the link based on the one or more bandwidth requests.

Bandwidth based power management for peripheral component interconnect express devices

Systems and methods for power management for Peripheral Component Interconnect express (PCIE) devices allow PCIE termini to enter advanced low-power states while a PCIE link is idle. These advanced low-power states may include scaling a clock frequency up through a complete shutdown of power rails and clocks within the PCIE terminus. Additionally, use of a wakeup signal such as a clock request (CLKREQ or CLKREQ #) signal may allow the terminus to wake relatively quickly and resume operation so as to avoid degradation of the user experience or loss of data.

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San Diego, CA, United States of America

Dilip Venkateswaran Murali