Abstract: A data processing method includes obtaining a target value and/or an adjustment value of a data transmission rate by a first chip; determining a data adjustment manner and/or configuring a parameter of a sensor based on the target value and/or the adjustment value by the first chip.

Abstract: This disclosure discloses image transmission methods and apparatuses. In an implementation, a method performed by an apparatus includes generating a first data packet, wherein the first data packet comprises a portion of content of a frame of an image and first information indicating frame synchronization and line synchronization and sending the first data packet to a second communications apparatus.

Abstract: An inter integrated circuit (I2C)-based communication method incudes when an I2C signal is encapsulated into a data packet for transparent transmission, an I2C status is indicated by a first field in a packet header of the data packet. The data packet may have no load part, or the data packet has a load part but the load part is used to carry a slave address, a read/write flag, or I2C data. Because the I2C status is indicated in the packet header of the data packet, the I2C status may be encapsulated in a same data packet together with the slave address, the read/write flag, or the I2C data. In other words, the I2C status may not need to occupy one data packet separately.

Abstract: A communications method includes: A control node determines first configuration information, where the first configuration information belongs to a configuration information set, the configuration information set includes at least one piece of configuration information, and the first configuration information is used to indicate whether a first slave node performs, in some or all of time units included in a preset time period, an operation corresponding to the first configuration information. This is applicable to coordination and management of communication between slave nodes in a transmission system having a plurality of service requirements, and implements flexible configuration of each slave node in the transmission system by the control node.

Abstract: Embodiments of this application disclose a data processing method, which can be applied to a clock synchronization network system. The system can correct, based on a clock frequency error or a time error, a data timestamp of a data packet collected by the system in a time period in which there is no reference clock, so that a corrected system time of the data packet is consistent with a reference time. This improves accuracy of data record.

Abstract: A clock calibration method and apparatus is provided, where the method includes a terminal device uses first timing information, adjusts second timing information of the terminal device based on reference timing information, and when determining that a first condition is met, switches from using the first timing information to using the second timing information. The first timing information is primary timing information, the second timing information is standby timing information, and the first condition includes that: the first timing information is different from the reference timing information, and the second timing information is the same as the reference timing information; or the first timing information is different from the second timing information; or the first timing information is different from the reference timing information.

Abstract: A data transmission method according to an I2C protocol and a transmission apparatus includes: a first transmission chip obtains I2C data from a first device, wherein the I2C data is data sent by the first device to a second device. The first transmission chip sends first feedback information to the first device, wherein the first feedback information is used to indicate whether the I2C data is successfully received. The first transmission chip forwards the I2C data to a second transmission chip corresponding to the second device. The first transmission chip receives second feedback information from the second transmission chip, and the second feedback information is used to indicate whether the I2C data is successfully received. The first transmission chip stores the second feedback information in a first storage space that is storage space of the first transmission chip.

Abstract: A PCIe-based communications system includes a first processor and a plurality of switches, the plurality of switches include a first switch and a second switch, a first link exists between the first processor and the first switch, a second link exists between the first switch and the second switch, and a first standby link is configured between the first processor and the second switch. If the first link and the second link are not faulty, communicating, by the first processor, with the second switch through the first link and the second link; or if the first link or the second link is faulty, activating the first standby link, and communicating, by the first processor, with the second switch through the activated first standby link. Thereby stability of the communications system can be improved.

Abstract: A PCIe-based communications method includes: a root complex writes identity information of a second node into a first node and writes routing table information into a third node, where the first node is a source node of first data, the second node is a destination node of the first data, and the third node is a node through which the first data arrives at the second node.

Abstract: A Peripheral Component Interconnect Express (PCIe) data transmission method includes a first node that obtains a transaction layer packet (TLP). The TLP includes a TLP header, a TLP extension header, and data. The TLP header includes a type field, an Fmt field, and a reserved bit, and where the type field, the Fmt field, the reserved bit, and the TLP extension header indicate a data type of the data and at least one piece of attribute information corresponding to the data type such that, information, the data type and the at least one piece of the attribute information, to transmit the data is indicated using the type field, the Fmt field, the reserved bit, and the TLP extension header in the TLP.

Abstract: A Peripheral Component Interconnect Express (PCIe)-based data transmission method includes that a first node obtains a transaction layer packet (TLP), where the TLP includes data, a type field, and at least one reserved bit, the type field and the at least one reserved bit indicate a first parameter set, and the first parameter set includes a data type of the data, and the first node sends the TLP to a second node.

Abstract: A Peripheral Component Interconnect Express (PCIe)-based data transmission method and apparatus includes a first node that encapsulates data into a transaction layer packet (TLP) and then sends the TLP to a second node, where the TLP includes a packet header part, a first field and a second field of the packet header part that are used to indicate first encapsulation information, and the first encapsulation information includes a data type of the data and at least one encapsulation parameter corresponding to the data type.t The first field and the second field are used to indicate the information required for transmitting the data, so that the endpoints can communicate with each other even if the root is not used.

Abstract: A PCIe-based data transmission method and an apparatus are provided. The method includes the following: A first node obtains and sends a first TLP; and a switch receives the first TLP, and sends a second TLP to a second node. The first TLP includes a first TLP header and a first data payload, the second TLP includes a second TLP header and the first data payload, the first TLP header and the second TLP header are used to indicate a data type of the first data payload, and the data type of the first data payload includes at least one of audio, an image, control, data stream write, or security. The second node obtains the first data payload based on the data type of the first data payload. This helps reduce communication complexity in a high-speed communication scenario.

Abstract: A Peripheral Component Interconnect Express (PCIe)-based data transmission method includes a first node that encapsulates first data into a first transaction layer packet (TLP) and sends the first TLP to a second node, where a TLP header of the first TLP includes a first field, the first field is used to indicate a data type of the first data, and the data type includes at least one of the following: an image type, a video type, a control type, a security type, and a stream write (SWRITE) type. In embodiments of this application, the first field in the TLP header is used to indicate information required for data transmission, for example, the data type, so that nodes can communicate with each other without using a root complex.

Abstract: A first node obtains a transaction layer packet (TLP); and the first node sends the TLP to a second node. The TLP includes data, a type field, and an extension header, and the type field and the extension header are used to indicate a data type of the data and one or more first attribute parameters corresponding to the data type.

Abstract: A PCIe-based data transmission method and an apparatus are provided. The method includes the following: A first node obtains and sends a first TLP; and a switch receives the first TLP, and sends a second TLP to a second node. The first TLP includes a first TLP header and a first data payload, the second TLP includes a second TLP header and the first data payload, the first TLP header and the second TLP header are used to indicate a data type of the first data payload, and the data type of the first data payload includes at least one of audio, an image, control, data stream write, or security. The second node parses the first data payload based on the data type of the first data payload. This helps reduce communication complexity in a high-speed communication scenario.

Abstract: This application discloses a peripheral component interconnect express (PCIe)-based data transmission method and apparatus. The method includes: A first node encapsulates data into a transaction layer packet (TLP) and then sends the TLP to a second node. The TLP includes a packet header and an extension header. The packet header includes a first field and a second field. The first field, the second field, and the extension header are used to indicate first encapsulation information. The first encapsulation information includes a data type of the data and at least one encapsulation parameter corresponding to the data type. In some embodiments, the first field, the second field, and the extension header are used to indicate the information required for transmitting the data.

Abstract: A control method and apparatus are disclosed in this application. The method includes: After determining a target device that needs to be controlled, a host may send indication information, a control command, and an address of a register of the target device to a control device through an I2C interface, so that the control device may encapsulate the indication information, the control command, and the address of the register of the target device, and send the indication information, the control command, and the address of the register of the target device that are encapsulated to a slave device connected to the control device.

Abstract: The present disclosure relates to clock switching methods, devices, and storage medium. In one example method, a slave clock device may monitor a working status of a master clock device, and sends first indication information when discovering that the master clock device is in a faulty state, so that a communications device synchronizes with a system clock of the communications device based on time information of the slave clock device.