International Business Machines Corporation

Yvonne Hanson Kleppel

Enrique Q Garcia

Christian Jacobi

Gregg Steven Lucas

Patrick James Meaney

Paul Allen Ganfield

Glenn David Gilda

Jentje Leenstra

Robert Earl Medlin

Jason Andrew Thompson

Ashutosh Mishra

Kenny N Qiu

Russell Lee Ellison

Logan I Friedman

Rajendrasinh Banesinh Jadeja

A computer-implemented method includes using a transmitter to send data from the transmitter through a plurality of lanes to a receiver using a synchronous operation mode that includes sending the data from the transmitter through the plurality of lanes to the receiver in a synchronous transmission manner that relies on an alignment between a transmitter clock frequency and a receiver clock frequency. A synchronous operation performance analysis (SOPA) is performed during the synchronous operation mode. A switch from the synchronous operation mode to an asynchronous operation mode is made based on a result of performing the SOPA. The asynchronous operation mode includes sending the data from the transmitter through the plurality of lanes to the receiver without requiring alignment between the transmitter clock frequency and the receiver clock frequency.

Low-latency, high-availability and high-speed SerDes interface having multiple synchronization modes

An apparatus, system, and method are disclosed for redundant device management. The apparatus is provided with a plurality of modules configured to functionally execute the necessary steps of receiving a communication message, determining whether an address associated with the communication message designates a local processor as a destination for the communication message, wherein the address is stored in an address field associated with the communication message, and transmitting the communication message to a remote device. These modules in the described embodiments include a transmitter module, a receiver module, and an addressing module.

Apparatus, system, and method for redundant device management

A system and method for verifying integrity of data signals communicated from a data transmit device to a receive device over a communications channel of limited bandwidth. The method comprising steps of: a) detecting instances of idle data transmit activity at the transmit device; b) accumulating data integrity information for data transmitted over the communication channel between detected idle transmit instances, the accumulating being performed by data integrity verifier devices at both transmit and receive devices; c) communicating accumulated data integrity information for data transmitted since a last detected idle data transmit instance during a current detected idle data transmit instance; and, d) verifying accumulated data integrity information communicated over the channel at the receiver device. The system and method of the invention may be used to provide intermediate data integrity checks when communication of packets belonging to a stream is interrupted without compromising bandwidth utilization. Moreover, the system and method of the invention may be used to provide data integrity verification for data communicated over two or more communications channels between instances of detected idle transmit states.

System and method for utilizing spare bandwidth to provide data integrity over a bus

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Tucson, AZ, United States of America

Yvonne Hanson Kleppel