clock spine阶段主要实现H-Tree的搭建,即芯片层次的H-Tree和模块内部的H-Tree,芯片层次的H-Tree需要借助TMAC实现,模块内部的H-Tree需要首先对内部寄存器进行放置约束,然后以mesh buffer为根节点做H-Tree;clock mesh主要完成时钟网的布局、anchor pin的设定以及局部模块驱动器(Mesh buffer)的放置。 2.1 Clock Spine的...
The synchoros VLSI design style requires that the RCT, like the regional NoCs, is also created by abutting its fragments. The RCT fragments are absorbed within the SiLago blocks. The RCT created by the abutment is not an ad-hoc clock tree but a structured and predictable design with known...
Friedman, E. G., ed.Clock Distribution Networks in VLSI Circuits and Systems, IEEE Press, 1995. Google Scholar Sathyamurthy, H., Sapatnekar, S. S., and Fishburn, J. P. “Speeding up pipelined circuits through a combination of gate sizing and clock skew optimisation,”Proceedings of the ...
A symmetric structure such as an H-tree is often utilized in global clock networks [319], as shown in Figure 10-15. The most attractive characteristic of symmetric structures is that the clock signal ideally arrives simultaneously at each leaf of the clock tree. Due to several reasons, howeve...
When the optical input is used to drive the photonic CDN (Fig. 6b), the maximum and mean temperature rises by 0.3 °C and 0.1 °C, respectively; in contrast, when the H-tree structure CDN is used, the maximum and mean temperature rises by 1.1 °C and 0.9 °C, respectively (Fig. ...
A High-Speed and Low-Power Clock Tree Synthesis by Dynamic Clock Scheduling(Special Section on VLSI Design and CAD Algorithms) In several researches in recent years, it is shown that the circuit of a higher clock frequency can be obtained by controlling the clock-input timing of ea... KUROKA...
buffers which incur additional clock skew, since the maximum transition constraint of clock signal may be violated without a buffered tree structure. We will see how the maximum fanout of newly inserted CGCs affects clock skew and power consumption of the single-mesh implementation later in this ...
Skew Analysis on Multisource Clock Tree Synthesis Using H-Tree Structure Chapter © 2020 References D. Dobberpuhl and R. Witek, “A 200 mhz 64b dual-issue cmos microprocessor,” in Proc. IEEE Intl. Solid-State Circuits Conf., pp. 106–107, 1992. Google Scholar Joe G. Xi and Wayn...
A method for low power clock tree synthesis using buffer insertion, removal and resizing for high-speed VLSI design is proposed. A developed tool can be embedded in the existing clo
The difference between the clock distributing circuits of the third and fourth aspects of the present invention, the clock synchronizing circuits that receive control voltages are disposed in parallel or in a tree shape (hierarchical structure) on the input terminal side of the external clock. Thus...