Serial bus electrical termination control

    公开(公告)号:US09916272B2

    公开(公告)日:2018-03-13

    申请号:US15419443

    申请日:2017-01-30

    CPC classification number: G06F13/385 G06F13/382 G06F13/4068 G06F13/4282

    Abstract: Some embodiments include apparatuses and methods having a node to couple to a serial bus, and a controller to provide a control signal to one of a first circuit path and a second circuit path in order to change electrical termination of a signal at the node between a first electrical termination through the first circuit path during a first mode of the controller and a second electrical termination through the second circuit path during a second mode of the controller. The controller can be arranged to provide the control signal to the first and second circuit paths during the first and second modes without providing another control signal from the controller to the first and second circuit paths during the first and second modes.

    REPAIR OF FAILED FIRMWARE THROUGH AN UNMODIFIED DUAL-ROLE COMMUNICATION PORT

    公开(公告)号:US20170270021A1

    公开(公告)日:2017-09-21

    申请号:US15607322

    申请日:2017-05-26

    CPC classification number: G06F13/4282

    Abstract: A repair engine for a computing platform is separate from the repeatedly-rewritten storage components for software and firmware. For example, the repair engine may reside in ROM or hardware logic. Through dedicated connections to one or more controllers, the repair engine detects when any of the platform's dual-role ports (e.g., on-the-go USB ports) is connected to a host device. The repair engine responds by opening firmware-independent communication with the host device and supporting the downloading and execution (DnX) of a firmware image from the host. Because the communication is initiated independently of the firmware, even a catastrophic firmware failure is repairable without requiring a user to identify and use a specially modified port.

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