Intel Corporation

Deepak M Rangaraj

Avinash N Ananthakrishnan

Brent Ralph Boswell

Bryan L Spry

Aimee D Wood

Patrick Maloney

Marcus W Song

Sindhu Amireddy

Robert J Hayes

Adam E Letendre

Brent Bero

Hardware-based wake detection and system-on-chip (SoC) firmware support for servicing fixed display port (DP) and High Definition Multimedia Interface (HDMI) port hot plug events which allow a Universal Serial Bus (USB) Type-C subsystem to go into a powered off state while the fixed display is not streaming. Upon receiving a display software-initiated wake for fixed display streaming in response to a hot plug detect, the SoC USB Type-C firmware triggers exit low-power state flow to power up the USB USB Type-C subsystem to handle the display traffic. The SoC USB Type-C firmware has the capability to autonomously re-enter the low power state when the fixed display(s) are not streaming.

USB Type-C subsystem power management

Techniques and mechanisms for configuring an integrated circuit (IC) chip to implement a protocol stack. In an embodiment, a transaction layer of the IC chip is operable to exchange with a link layer of the IC chip transaction layer packets (TLPs) having a format compatible with one defined in a Peripheral Component Interconnect Express&#x2122; (PCIe&#x2122;) specification. Configuration circuitry of the IC chip provides for configuration of a first protocol stack including the transaction layer, circuitry of the link layer and a first physical layer of the IC chip. The configuration circuitry further provides for an alternative configuration of a second protocol stack including the transaction layer, circuitry of the link layer and a second physical layer of the IC chip. In another embodiment, the first protocol stack supports single-ended signaling to communicate TLP information, whereas the second protocol stack supports differential signaling to communicate TLP information.

Method, apparatus and system for configuring a protocol stack of an integrated circuit chip

Growing community of inventors

Hillsboro, OR, United States of America

Deepak M Rangaraj