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KEEPER-FREE INTEGRATED CLOCK GATE CIRCUIT

机译:无保持综合集成时钟门电路

摘要

An integrated clock gate (ICG) includes an OR-AND-INVERT gate to receive a first enable and a second enable; a first inverter coupled to the output of the OR-AND-INVERT; a first NAND gate coupled to the output of the first inverter; a second NAND gate coupled to the output of the OR-AND-INVERT; and a second inverter to provide a clock which is gated based on logic values of the first enable and/or the second enable, wherein an output of the second inverter is received as input by the OR-AND-INVERT-gate. The ICG circuit reduces capacitance of input clk pin, which translates to lower switching power when clock is gated and reduction in dynamic power of clock network, since buffers in clock tree driving the ICG cells can be downsized. The ICG cell has the smallest transistor count (and area) when compared to existing ICG cell topologies.
机译:集成时钟门(ICG)包括一个或 - 反转门以接收第一使能和第二个使能; 第一逆变器耦合到或逆转的输出; 第一NAND门耦合到第一逆变器的输出; 第二个NAND门耦合到或变形的输出; 和第二逆变器提供基于第一使能和/或第二使能的逻辑值所浇注的时钟,其中将第二逆变器的输出被接收为由反相门的输入。 ICG电路减少了输入CLK引脚的电容,当时钟网络的动态功率降低时,转换为较低的开关功率,因为驱动ICG电池的时钟树中的缓冲器可以缩小。 与现有ICG细胞拓扑相比,ICG电池具有最小的晶体管计数(和面积)。

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