Nxp B.v.

St-ericsson Sa

Sam C Wood

Robert J Caesar, Jr

David R Evoy

Systems and methods according to the present invention provide serial communication devices which are pin-configurable at power on to operate as either a root () or endpoint () device. In conjunction with, for example, PCI Express specified I/O data buses (), such devices provide for efficient transfer of serial data between systems and devices.

Serial communication device configurable to operate in root mode or endpoint mode

An apparatus and method for supporting PCI Express is disclosed. A physical layer has a PCI Express interface for receiving data from a PCI Express compatible communication medium. The data is in the form of a packet. A data link layer is disclosed for verifying a CRC value and a sequence number received within the packet. A transaction layer is disclosed for receiving the packet from the data link layer and for processing thereof. The transaction layer processes at least some of the packet data in parallel to the data link layer.

Method for parallel data integrity checking of PCI express devices

A system and method for packet-based communications is performed by implementing arbitrated packet-based communications. According to an example embodiment, packet-based data is arbitrated and output with verification data. For each arbitrated packet stream, verification data is generated in response to detecting an end of frame (EOF) symbol in the arbitrated packet stream, and the verification data is added to the packet stream. A merged packet stream is provided at an output, the merged packet stream including the plurality of arbitrated packet streams with verification data added thereto.

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Suwanee, GA, United States of America

Sam C Wood