Adaptec, Inc.

Pmc-sierra Us, Inc.

Marc Spitzer

John S Packer

Douglas C Lee

Fanyun (Michelle) Kong

An apparatus is disclosed for handling multiple requestors desiring access to a resource. The apparatus includes a plurality of masters and a plurality of arbitrators. Each arbitrator is assigned to a different one of the plurality of masters. Also, each arbitrator is defined to consider a different portion of the multiple requestors when selecting a requestor to be serviced by the master to which the arbitrator is assigned. Each arbitrator is further defined to select a requestor from the different portion of the multiple requestors, such that selection of a particular requestor is not duplicated among the plurality of arbitrators. Additionally, requestor selection by each of the plurality of arbitrators is performed in a same clock cycle.

Apparatus for masked arbitration between masters and requestors and method for operating the same

A circuit is provided for handling multiple requestors desiring access to a resource. The circuit includes a plurality of arbitrators and a plurality of masters. Each master is assigned to a different one of the plurality of arbitrators. Each arbitrator is defined to select a different one of the multiple requestors to be serviced by the master to which the arbitrator is assigned. Also, the plurality of arbitrators is defined to make their requestor selections in the same clock cycle. Additionally, the plurality of arbitrators is defined to make their requestor selections such that selection of a particular requestor is not duplicated among the plurality of arbitrators.

Apparatus for real-time arbitration between masters and requestors and method for operating the same

A cache system includes a cache memory dedicated to service a number of sequencers with sequencer code. A number of cache managers are defined to direct placement of sequencer code portions into the cache memory. Also, each of the number of cache managers is defined to provide sequencer code from the cache memory to a respectively assigned sequencer. An external memory is defined to store a complete version of the sequencer code. A direct memory access (DMA) engine is defined to write sequencer code portions from the external memory to the cache memory, in accordance with direction from the number of cache managers.

Sequencer cache and method for operating the same

A method for generating hardware description language source files is provided. The method includes extracting an input/output (I/O) list and building a port list declaration file from the I/O list. The method also includes building a default instantiation file according to renaming rules and interpreting coding constructs to determine both variable types and sizes. The method further includes generating a sensitivity list.

Automatic generators for verilog programming

ASIC functional specification parser

A method for sharing a buffer among multiple context engines, is provided. The method includes loading a memory element with a first data sequence. The method further includes loading a corresponding first context information to one of the multiple context engines. Subsequently, a direct memory access engine is loaded with the first data sequence dictated by the first context information. Then, the first data sequence is processed. While the first data sequence is being processed, the method includes loading the context engine with a next context information for a next data sequence contemporaneously with the processing of the first data sequence.

Method and system for sharing a receive buffer RAM with a single DMA engine among multiple context engines

A system and method for testing a development device includes extracting multiple parameters of the development device from a product specification for the development device. The parameters being arranged in a predetermined first order. The parameters are stored in a testing data file. The testing data file can be input into a test bench system being coupled to the development device. The test bench system can test the development device.

Growing community of inventors

San Jose, CA, United States of America

Marc Spitzer