摘要
在网络节点SoC中常用的低功耗策略是提供休眠唤醒支持.首先分析了电路功耗产生机理的基础上,采用关闭时钟和关闭电源的两种不同的休眠工作模式及为实现它们的双电源供应结构,讨论了其中的支持休眠唤醒机制的供电模块设计、数据保持和隔离设计和MAC时钟恢复问题,最后利用可配置的协处理器和双振荡器设计以实现缩短唤醒时间.
Commonly used low-power strategy in node SoC in the network is to provide support for sleep and wake-up. On the basis of analyzing the circuit-power mechanism, this paper used two different sleep modes： shutting down clock or power supply, and the dual-power supply structure. Power supply module design, data retention and isolation, medium access control （MAC） timer synchronization strategy are discussed in detail. Finally, the co-processor which can be configured, and the double-oscillator are designed to shorten the waking-up time.
出处
《微电子学与计算机》
CSCD
北大核心
2009年第6期137-140,共4页
Microelectronics & Computer
基金
国家"八六三"计划项目(2006AA01Z226)
湖北省自然科学基金项目(2006ABA080)
新世纪优秀人才支持计划(NCET-07-0328)
关键词
无线传感器网络
低功耗
SOC
休眠机制
wireless sensor network
low power design
SoC
sleeping schedule
