A dual-channel access mechanism to overcome the drawback of traditional single-channel access mechanism for network-on-chip （NoC） is proposed. In traditional single-channel access mechanism, every Internet protocol ...A dual-channel access mechanism to overcome the drawback of traditional single-channel access mechanism for network-on-chip （NoC） is proposed. In traditional single-channel access mechanism, every Internet protocol （IP） has only one chan- nel to access the on-chip network. When the network is relatively idle, the injection rate is too small to make good use of the network resource. When the network is relatively busy, the ejection rate is so small that the packets in the network cannot leave immediately, and thus the probability of congestion is increased. In the dual-channel access mechanism, the injection rate of IP and the ejection rate of the network are increased by using two optional channels in network interface （NI） and local port of routers. Therefore, the communication performance is improved. Experimental results show that compared with traditional single-channel access mechanism, the proposed scheme greatly increases the throughput and cuts down the average latency with reasonable area increase.展开更多
电源管理芯片在超过可承受温度范围工作时会对自身造成不同程度的损坏,过温保护电路对提高该类芯片的可靠性和鲁棒性具有重要作用。文中设计了一种具有温度过高关断和温度过低提醒等双重功能的高精度过温保护电路。利用正、负温度系数...电源管理芯片在超过可承受温度范围工作时会对自身造成不同程度的损坏,过温保护电路对提高该类芯片的可靠性和鲁棒性具有重要作用。文中设计了一种具有温度过高关断和温度过低提醒等双重功能的高精度过温保护电路。利用正、负温度系数电压对芯片温度进行实时检测,并与带隙基准电路输出端的不同基准电压分别进行比较得到4个逻辑翻转点,进而通过高精度比较器电路和迟滞逻辑电路处理后,输出迟滞逻辑信号来控制芯片的工作状态或进行温度过低提醒。基于0.18μm BCD(Bipolar-Complementary Metal Oxied Semiconductor-Double diffused Metal Oxide Semiconductor)工艺设计并完成了相关仿真验证,仿真结果表明,在电源电压范围为3.0~5.5 V时,该电路输出端的迟滞逻辑翻转信号对应的温度阈值最大偏移量在0.3℃以内,具备较高的精度,可广泛集成于各种需要过温保护功能的电源管理芯片。展开更多
基金supported by the High Technology Research and Development Program of Fujian Province(2010HZ0004-1,2009HZ0003-1)
文摘A dual-channel access mechanism to overcome the drawback of traditional single-channel access mechanism for network-on-chip （NoC） is proposed. In traditional single-channel access mechanism, every Internet protocol （IP） has only one chan- nel to access the on-chip network. When the network is relatively idle, the injection rate is too small to make good use of the network resource. When the network is relatively busy, the ejection rate is so small that the packets in the network cannot leave immediately, and thus the probability of congestion is increased. In the dual-channel access mechanism, the injection rate of IP and the ejection rate of the network are increased by using two optional channels in network interface （NI） and local port of routers. Therefore, the communication performance is improved. Experimental results show that compared with traditional single-channel access mechanism, the proposed scheme greatly increases the throughput and cuts down the average latency with reasonable area increase.
文摘电源管理芯片在超过可承受温度范围工作时会对自身造成不同程度的损坏,过温保护电路对提高该类芯片的可靠性和鲁棒性具有重要作用。文中设计了一种具有温度过高关断和温度过低提醒等双重功能的高精度过温保护电路。利用正、负温度系数电压对芯片温度进行实时检测,并与带隙基准电路输出端的不同基准电压分别进行比较得到4个逻辑翻转点,进而通过高精度比较器电路和迟滞逻辑电路处理后,输出迟滞逻辑信号来控制芯片的工作状态或进行温度过低提醒。基于0.18μm BCD(Bipolar-Complementary Metal Oxied Semiconductor-Double diffused Metal Oxide Semiconductor)工艺设计并完成了相关仿真验证,仿真结果表明,在电源电压范围为3.0~5.5 V时,该电路输出端的迟滞逻辑翻转信号对应的温度阈值最大偏移量在0.3℃以内,具备较高的精度,可广泛集成于各种需要过温保护功能的电源管理芯片。
