A binary CDMA bus is proposed as a communications interconnect for multiprocessor systems. The binary CDMA bus is a digital bus which incorporates spread-spectrum technology to encode multiple data streams in parallel onto the same physical interconnect. Mean value analysis is used to show that, for resource bandwidth-limited applications, the binary CDMA bus can deliver a throughput speedup over a split-transaction bus as large numbers of processors are interconnected, giving more scalable performance without additional end-to-end physical bus links. By monitoring bus utilization, the binary CDMA bus can be dynamically activated to alleviate contention and queuing delays experienced by a conventional bus.
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