Title :
Zero-skew driven for RLC clock tree construction in SoC
Author :
Tsai, Chia-Chun ; Wu, Jan-Ou ; Kuo, Chung-Chieh ; Lee, Trong-Yen ; Lee, Wen-Ta
Author_Institution :
Inst. of Comput., Commun., & Control, Nat. Taipei Univ. of Technol., Taiwan
Abstract :
In this paper, we observe that the clock tree in a SoC is unbalanced in nature and derive that a RC clock tree has the characteristic of exact zero-skew upward propagation but not for an unbalanced RLC clock tree. Illustrated inductions are helped to prove the observation. We develop a zero-skew driven algorithm for constructing a RLC clock tree to minimize the skew. More examples and benchmarks are evaluated. The difference in skew ratio and the tolerance in path delay compared with HSPICE are 1.15409% and 10.645%, respectively, on average.
Keywords :
RLC circuits; clocks; system-on-chip; trees (mathematics); RLC clock tree construction; SoC; system-on-chip; zero-skew driven algorithm; Clocks; Communication system control; Damping; Delay estimation; Inductance; Integrated circuit interconnections; Propagation delay; Radio control; Routing; Wires; Clock tree; RLC delay model; SoC; Upward propagation; Zero skew;
Conference_Titel :
Information Technology and Applications, 2005. ICITA 2005. Third International Conference on
Print_ISBN :
0-7695-2316-1
DOI :
10.1109/ICITA.2005.315
