数据转换开关(DATA TRANSFER SWITCH,俗称共享器),是计算机设备中的一种切换装置,主要用于多台计算机共用一台外围设备(如打印机等)时的转移切换.其结构为多触点机械开关,原理非常简单,电脑配件市场随处可见且价格仅为几十元.但如果将...数据转换开关(DATA TRANSFER SWITCH,俗称共享器),是计算机设备中的一种切换装置,主要用于多台计算机共用一台外围设备(如打印机等)时的转移切换.其结构为多触点机械开关,原理非常简单,电脑配件市场随处可见且价格仅为几十元.但如果将其合理运用到电视编辑设备中,作为RS-422遥控信号的切换设备,可省去编辑工作中经常遇到的不少麻烦,提高工作效率,减少设备故障.正可谓投资小见效大.展开更多
With the continuous increasing of circuit scale, the problem of power consumption is paid much more attention than before, especially in large designs. In this paper, an experience of optimizing the power consumption ...With the continuous increasing of circuit scale, the problem of power consumption is paid much more attention than before, especially in large designs. In this paper, an experience of optimizing the power consumption of the 16-bit datapath in a 32-bit reconfigurable pipelined Digital Signal Processor (DSP) is introduced. By keeping the old input values and preventing the useless switching of the logic blocks on the datapath, the power consumption is much lowered. At the same time, by relocating some logic blocks between different pipeline stages and employing some data forward logics, a better balanced pipeline is achieved to lower the power consumption for conditional computation instructions at very low timing and area costs. The effectivity of these power optimization technologies are proved by the experimental results. Finally, some ideas about how to reduce the power consumption of circuits are proposed, which are very effective and useful in practice designs, especially in pipelined ones.展开更多
文摘数据转换开关(DATA TRANSFER SWITCH,俗称共享器),是计算机设备中的一种切换装置,主要用于多台计算机共用一台外围设备(如打印机等)时的转移切换.其结构为多触点机械开关,原理非常简单,电脑配件市场随处可见且价格仅为几十元.但如果将其合理运用到电视编辑设备中,作为RS-422遥控信号的切换设备,可省去编辑工作中经常遇到的不少麻烦,提高工作效率,减少设备故障.正可谓投资小见效大.
文摘With the continuous increasing of circuit scale, the problem of power consumption is paid much more attention than before, especially in large designs. In this paper, an experience of optimizing the power consumption of the 16-bit datapath in a 32-bit reconfigurable pipelined Digital Signal Processor (DSP) is introduced. By keeping the old input values and preventing the useless switching of the logic blocks on the datapath, the power consumption is much lowered. At the same time, by relocating some logic blocks between different pipeline stages and employing some data forward logics, a better balanced pipeline is achieved to lower the power consumption for conditional computation instructions at very low timing and area costs. The effectivity of these power optimization technologies are proved by the experimental results. Finally, some ideas about how to reduce the power consumption of circuits are proposed, which are very effective and useful in practice designs, especially in pipelined ones.
