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首页> 外文期刊>Journal of Low Power Electronics >Self-Power Saving Technique in State Machine Circuit of Automatic Teller Machine Application
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Self-Power Saving Technique in State Machine Circuit of Automatic Teller Machine Application

机译：自动柜员机应用状态机电路中的自节省技术

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摘要

In a finite state machine (FSM), there is only one active state while the other states are in idle states simultaneously. Thus, only one state is required to power up, the other states can be switched off to save active power. Normally, a backward traversing algorithm is used to labelthe power gating cells and extract the enable signals for combinational logic gates in reducing the active power consumption. This conventional power gating technique uses the extracted enable signals to turn ON/OFF these inserted NMOS switches. Then, a power management unit is required tomanage these enable signals and detect the idle periods. The proposed self-power saving technique uses internally generated enable signals from state transitions to control NMOS switches inserted under the ground rail of each state. All internal enable signals are created to activate/deactivatethe machine states at the same time. Based on the next state of the FSM, a decoder creates the enable signals for each state to do power gating in an Automatic Teller Machine (ATM) application. The isolation cell is designed to isolate the current state and next state for retaining data. Simulationresults show the power saving from 31.99% at a WAIT state to 82.87% at a LOCK state, depending on the current state of the finite state machine. On average, the power loss is saved up to 63.2% in the FSM. An overhead area is about 12% compared to the conventional technique while timing overheadis under 5%.
机译：在有限状态机（FSM）中，只有一个活动状态，而另一个状态同时在空闲状态中。因此，只需要一个状态来供电，可以关闭其他状态以节省电力。通常，向后遍历算法用于标记功率门控单元，并在降低有效功耗时提取用于组合逻辑栅极的使能信号。这种传统的功率门控技术使用提取的使能信号打开/关闭这些插入的NMOS开关。然后，需要电源管理单元Tomanage这些使能信号并检测空闲周期。所提出的自源技术使用来自状态转换的内部生成的使能信号来控制插入每个状态的地面轨道下的NMOS开关。创建所有内部启用信号以同时激活/去激活机器状态。基于FSM的下一个状态，解码器创建每个状态的使能信号，以在自动柜员机（ATM）应用程序中进行功率门控。隔离单元被设计为隔离当前状态和下一个状态以保持数据。根据有限状态机的当前状态，SimulationResults显示在锁定状态下的31.99％到82.87％的节能。平均而言，电源损耗在FSM中保存高达63.2％。与传统技术相比，架空面积约为12％，而在5％以下的时序上限。

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