Telefonaktiebolaget Lm Ericsson (publ)

St-ericsson Sa

Bipin Balakrishnan

Andrei Radulescu

Abdelaziz Goulahsen

Peter Van Den Hamer

Transaction exchanges are controlled between two integrated circuits in a system having the integrated circuits (ICs), a power supply supplying power to a link between the ICs, thereby enabling transaction exchanges between both ICs and a controller controlling the ICs and the power supply. This involves receiving an order at the controller, wherein the order requires the link to be closed. An instruction is sent from the controller to each of the two ICs, wherein the instruction causes each of the ICs to stop initiating new transaction requests. For each one of the ICs, in response to detecting that the one of the two ICs has stopped initiating new transactions, it is detected when all pending transactions initiated by the one of the two ICs have been executed. The link is closed in response to detecting that all pending transactions of both of the two ICs have been executed.

Method for controlling transaction exchanges between two integrated circuits

Systems and methods for handling a loss of message boundary in a real-time data transmission over an interconnect between a source node and a destination node are described. The destination node receives messages including one or more data frames. Each data frame includes an end-of-message flag, which is set when the data frame is last frame of a message, and a message sequence number, which is different for different messages. The destination node determines a loss of message boundary when a new data frame has a message sequence number different from the message sequence number of a previously received message, which did not have the end-of-message flag set. The destination node then transmits a synchronization loss message to the source node, and receives, as response, a status report message. The destination node is able to regain synchronization by determining a lost message boundary according to the status report message.

System and method to detect and communicate loss and retention of synchronization in a real-time data transfer scheme

A method for ensuring guaranteed services for real-time traffic on an interconnect with errors is provided. The real-time traffic comprises a first and second traffic class (HRT, SRT). Real-time traffic of the first and/or second traffic class (HRT, SRT) is transmitted from a transmitter to a receiver. It is detected by the receiver whether an error has occurred during the transmission of the real-time traffic and the error is reported to the transmitter. At least part of the real-time traffic of the second traffic class (SRT) is re-transmitted by the transmitter if the transmitter has received an error report from the receiver within a predetermined time period.

Electronic device and method of ensuring guaranteed services

Link startup systems, methods and devices associated with interconnects are described. Asymmetric lane connections are supported by, for example, independent renumbering of the connected lanes after an initial discovery process. Low-power, hibernating states of devices are supported by, for example, initialing alternating between transmission of startup and wakeup sequences over the interconnect between devices.

Growing community of inventors

Eindhoven, Netherlands

Bipin Balakrishnan