Arbitration in local system for access to memory in a...

Details Arbitration in local system for access to memory in a... Arbitration in local system for access to memory in a...

2005-03-01

2005-03-01

Lefkowitz, Sumati (Department: 2112)

Electrical computers and digital data processing systems: input/

Access arbitrating

C710S309000, C710S043000, C711S149000

Reexamination Certificate

active

06862640

ABSTRACT:
A multiprocessor system includes a plurality of data processors. Each data processor includes: a data processing core; a memory forming a local portion of a unified memory; and a global memory arbitration logic. Each local portion of the unified memory is dual ported. The global memory arbitration logic arbitrates access to a first port among the corresponding data processing core and a close data processing core. The global memory arbitration logic arbitrates access to a second port of another data processor among data processing cores having a far connection to that local portion of unified memory. The dual port memory is preferably time multiplexed. The global memory arbitration logic grants a local peripheral bus priority access to both ports of the local portion of unified memory.

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