首页>
外国专利>
An arbitration unit with circular or 'round-robin' priority, particularly for multiprocessor systems with synchronous symmetrical processors
An arbitration unit with circular or 'round-robin' priority, particularly for multiprocessor systems with synchronous symmetrical processors
展开▼
机译:具有循环或“循环”优先级的仲裁单元,特别是对于具有同步对称处理器的多处理器系统
展开▼
页面导航
摘要
著录项
相似文献
摘要
In a synchronous arbitration unit with circular (round-robin) priority for arbitrating between N requests (Ri) for access to common resources of a multiprocessor system, the requests (Ri) stabilized in an input register (40) timed by a clock signal (CLK1) are applied as inputs to a fixed-priority arbitration network (44) having 2N-1 inputs, N-1 of the requests being applied both to a first set of N-1 lower-priority inputs of the network and, through masking circuits (42) which selectively mask the requests with a binary masking configuration generated by mask-generating circuits (43) in accordance with predetermined priority-rotation criteria, to a second set of N-1 higher-priority inputs of the network, in the same order of input priority. The grant signals output by the network are latched in an output register (41) after logical OR of the grant signals associated with the same request and the arbitration unit thus formed has a minimal arbitration time and is constituted by a small number of logic components.
展开▼