Devices and methods for transmitting usb termination signals over extension media

A downstream facing port device (DFP device), comprising:

• at least one downstream facing port coupleable to a USB device via a USB protocol;
• and
• a detection proxy engine configured to:
• determine whether a USB device coupled to the at least one downstream facing port supports SuperSpeed communication;
• and
• selectively cause receiver termination to be presented by an upstream facing port device (UFP device) based on the determination of whether the USB device supports SuperSpeed communication.

An upstream facing port device (UFP device), comprising:

• at least one upstream facing port coupleable to a host device or a hub device via a USB protocol;
• and
• a detection proxy engine configured to:
• establish a USB communication channel with a host device or a hub device coupled to the at least one upstream facing port;
• and
• hold the USB communication channel with the host device or the hub device in a logically disconnected state until a signal is received indicating whether a USB device connected to a downstream facing port device (DFP device) supports SuperSpeed communication.

A downstream facing port device (DFP device), comprising:

• at least one downstream facing port coupleable to a USB device via a USB protocol;
• and
• a detection proxy engine configured to:
• establish a USB communication channel with a USB device coupled to the at least one downstream facing port;
• and
• hold the USB communication channel with the USB device in a logically disconnected state until a signal is received indicating whether a host device or a hub device connected to an upstream facing port device (UFP device) supports SuperSpeed communication.

A method of establishing USB communication between a host device and a USB device connected via an upstream facing port device (UFP device) coupled to the host device and a downstream facing port device (DFP device) coupled to the USB device, the method comprising:

• establishing a connection between the USB device and the DFP device;
• holding the connection in a logically disconnected state;
• establishing a communication channel between the UFP device and the DFP device;
• and
• selectively enabling switching circuitry of the DFP device based on a determination of whether the host device supports SuperSpeed communication
• wherein enabling the switching circuitry of the DFP device causes receiver termination circuitry of the DFP device to be coupled to a conductor configured for transmission of data from the USB device to the DFP device.

A method of establishing USB communication between a host device and a USB device connected via an upstream facing port device (UFP device) coupled to the host device and a downstream facing port device (DFP device) coupled to the USB device, the method comprising:

• determining whether the host device supports SuperSpeed communication;
• establishing a communication channel between the UFP device and the DFP device;
• transmitting, by the UFP device to the DFP device, a signal indicating whether the host device supports SuperSpeed communication;
• selectively enabling receiver termination on the DFP device based on content of the signal;
• and
• selectively enabling receiver termination on the UFP device based on whether the host device supports SuperSpeed communication at a time based on a time of the transmitting of the signal to the DFP device.