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Clock distribution networks are affected by different sources of variations. The resulting clock uncertainty significantly affects the frequency of a circuit. To support this analysis, a statistical model of skitter, which consists of clock skew and jitter, for 3-D clock trees is introduced. The effect of skitter on both the setup and hold time slacks is modeled. The variation of skitter is shown...
In modern VLSI circuits, a large number of clock buffers are inserted in clock distribution networks, which are significantly affected by process and power supply noise variations. The combined effect of process variations and power supply noise on clock skew and jitter is investigated in this paper. A statistical model of skitter, which consists of skew and jitter, is proposed. Clock paths with different...
The effect of process variations on the clock skew in three dimensional (3-D) circuits with multiple clock domains is investigated. In 3-D ICs, the combined effect of inter-die and intra-die process variations should be considered in the design of clock distribution networks. A statistical clock skew model incorporating spatially correlated intra-die process variations is employed to describe this...
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