Wake-up protocols for controlling current surges in MTCMOS-based technology
Wake-up protocols for controlling current surges in MTCMOS-based technology
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DOI：
10.1145/1120725.1121057
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发表时间：
2005-01
期刊：
影响因子：
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通讯作者：
A. Davoodi;Ankur Srivastava-
中科院分区：
文献类型：
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作者：
A. Davoodi;Ankur Srivastava-
本文针对采用多阈值CMOS（MTCMOS）技术实现的电路提出了控制唤醒噪声的策略。在MTCMOS电路中，在活动模式和待机模式之间切换时，由于节点处的浮动电压，会出现电流的突然浪涌。这些浪涌可能会影响电路的可靠性。在本文中，我们通过制定唤醒策略来解决上述问题，以便在电路开启时控制这些电流浪涌。通过逐渐开启电路，从电网网络汲取的电流会更小。针对在从电网网络汲取最大电流的给定约束条件下的MTCMOS电路，提出了一种新颖的划分技术。本文提出了两种方法：基于整数线性规划（ILP）的最优公式和一种多项式时间启发式算法。实验结果表明，在最多4个时钟周期的电路开启时间内，峰值汲取电流可提高多达90.7%。结果还表明，就解决方案的质量而言，启发式算法是有效的，并且对于较大的电路，其运行时间比ILP方法快多达6600倍。
This paper proposes strategies to control the wake-up noise for circuits implemented in MTCMOS technology. In MTCMOS circuits, during the switchings between the active and standby modes, sudden surges in current happens due to floating voltages at the nodes. These surges might violate the reliability of the circuit. In this paper we address the above problem by developing wake-up strategies to control these current surges as the circuit is getting turned on. Through gradually turning on a circuit a smaller current will be drawn from the power-grid network. A novel partitioning technique is proposed for MTCMOS circuits under a given constraint of maximum drawn-current from the power-grid network. Two approaches are proposed in this paper; the optimal ILP-based formulation and a polynomial-time heuristic. Experimental results show that up to 90.7% improvement in peak drawn-current is obtained with a maximum of 4 clock cycles time to turn on the circuit. Also result show the effectiveness of the heuristic in terms of the quality of solution and a run-time of up to 6600 times faster than the ILP approach for larger circuits.