Reconfigurable latch controllers for low power asynchronous circuits
Reconfigurable latch controllers for low power asynchronous circuits
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用于低功耗异步电路的可重构锁存控制器
DOI：
10.1109/async.1999.761520
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
L. Brackenbury
中科院分区：
文献类型：
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作者：
M. Lewis;J. Garside;L. Brackenbury
提出了一种降低异步微管道电路功耗的方法。该方法基于锁存器控制器的设计，其中可以根据电路的动态处理需求选择管道锁存器的工作模式（常开/透明或常闭/不透明）。在正常关闭模式下操作可以防止虚假的转换沿着静态管道传播，以降低吞吐量为代价。在流水线乘法器数据路径上对新锁存器控制器电路的测试表明，通过转换为常闭工作模式，每次操作的能量减少可达32%。估计表明，在表现出可变处理需求的典型应用程序中，可能会降低16-24%的功耗，而对最大吞吐量几乎没有影响。
A method for reducing the power consumption in asynchronous micropipeline-based circuits is presented. The method is based around a design for latch controllers in which the operating mode of the pipeline latches (normally open/transparent or normally closed/opaque) can be selected according to the dynamic processing demand on the circuit. Operating in normally-closed mode prevents spurious transitions from propagating along a static pipeline, at the expense of reduced throughput. Tests of the new latch controller circuits on a pipelined multiplier datapath show that reductions in energy per operation of up to 32% can be obtained by changing to the normally-closed operating mode. Estimates suggest that in a typical application which exhibits a variable processing demand, a power reduction of between 16-24% is possible, with little or no impact on maximum throughput.