[Object] Effectively perform data communication [Solving Means] A communication device includes: a LINK that generates a first output signal on a basis of a first external signal from a first external device, outputs the first output signal to a second external device, generates a second output signal on a basis of a second external signal from the second external device, and outputs the second output signal to the first external device, in which each of the first output signal and the second external signal includes command information indicating content of a command transmitted from the first external device, final-destination-device-identification-information for identifying a final destination device of data transmitted from the first external device, internal address information indicating an internal address of the final destination device, data length information indicating a length of the data transmitted from the first external device, and data-end-position-information indicating an end position of the data transmitted from the first external device.

A method of determining which of at least two connected mobile devices is to function as a host device, wherein the mobile devices first determine which of them is to act as an initial host device and which is to act as an initial peripheral device. The initial host device then receives instructions from a user as to which of the mobile devices is to be the host device. If the instructions indicate that the initial host device is to be the host device, the initial host device controls, as host device, the initial peripheral device as a peripheral device, and if the instructions indicate that the initial peripheral device is to be the host device, the initial host device passes control to the initial peripheral device to enable the initial peripheral device to control, as host device, the initial host device as a peripheral device.

A host device can download a firmware update to a peripheral device having previously enumerated with the host device. The host device can perform link training with the peripheral device in response to a re-enumeration indication received from the peripheral device. The link training can include switching a Link Training and Status State Machine (LTSSM) in the host device from an active state (U0) to an RX.Detect state and synchronizing with the peripheral device in the RX.Detect state. The host device can re-enumerate with the peripheral device utilizing the firmware update after the host device completes link training with the peripheral device.

Data is accessed from a particular register first device that is connected to a second device via a link that includes at least one retimer device. The particular register corresponds to requests to be sent in in-band transactions with the retimer, and the data corresponds to a particular transaction with the retimer. At least one ordered set is generated at the first device to comprise a subset of bits encoded with the data, where the ordered set with the encoded subset of bits is to be sent on the link and the subset of bits are to be processed by the retimer in the particular transaction.

[Object] Effectively perform data communication [Solving Means] A communication device includes: a LINK that generates a first output signal on a basis of a first external signal from a first external device, outputs the first output signal to a second external device, generates a second output signal on a basis of a second external signal from the second external device, and outputs the second output signal to the first external device, in which each of the first output signal and the second external signal includes command information indicating content of a command transmitted from the first external device, final-destination-device-identification-information for identifying a final destination device of data transmitted from the first external device, internal address information indicating an internal address of the final destination device, data length information indicating a length of the data transmitted from the first external device, and data-end-position-information indicating an end position of the data transmitted from the first external device.

A communication circuit includes first and second communication nodes including first and second control chips, respectively, and first and second communication chips connected to the first and second control chips, respectively. The first and second communication chips are connected to each other through first and second signal lines, and are configured to transmit a differential signal. The first communication chip includes an output port to output a level signal obtained from the differential signal to the first control chip. The communication circuit further includes a voltage division assembly connected to the first and second signal lines, and configured to cause a voltage value of the first signal line to be higher than that of the second signal line when the first and second signal lines are in idle state. The first control chip includes a detection port connected to the output port to acquire the level signal.

A UART includes a transmission register, a receive register, a virtual remappable pin, a parity error check circuit to evaluate contents of the receive register for a parity error, and control logic to determine contents of the transmission register. The contents include underlying data and a parity bit based thereupon. The control logic is to route the contents through the first virtual remappable pin to the receive register. The control logic is to, before reception of the entire contents at the receive register, cause modified contents to be provided to the receive register. The modified contents are to cause a parity error. The modified contents are to include different underlying data or a different parity bit than the contents of the transmission register. The control logic is to determine whether the parity error check circuit detected the parity error.

An embodiment method for managing an operation for modifying the content of the memory plane of a memory device coupled to a processing unit, comprises a communication by the processing unit to the memory device of a control of the operation, an execution of the operation by the memory device, and at the end of the operation, a communication by the memory device itself to the processing unit of information indicating the end of the operation.

A device includes a transmitter coupled to a node, where the node is to couple to a wired link. The transmitter has a plurality of modes of operation including a calibration mode in which a range of communication data rates over the wired link is determined in accordance with a voltage margin corresponding to the wired link at a predetermined error rate. The range of communication data rates includes a maximum data rate, which can be a non-integer multiple of an initial data rate.

Provided are a method for transmitting a control instruction, a transmitting device and a receiving device. The method includes the follows. A first control instruction is obtained by a transmitting device. the first control instruction is encapsulated into a first protocol data stream. The first protocol data stream is superimposed, by the transmitting device through a first coupling network, on a second protocol data stream in the form of differential signal generated according to multimedia data to obtain a first signal, and the first signal is transmitted to a receiving device via a cable. The first signal is filtered by the receiving device to obtain a first protocol data stream, and the first protocol data stream is decapsulated to obtain a first signal. By adopting the disclosure, transmitting control instruction via the cable can realize controlling the target device connected to the receiving. The user experience is high.