公开(公告)号：US20040246027A1

公开(公告)日：2004-12-09

申请号：US10455170

申请日：2003-06-05

Applicant: IBM Corporation

Inventor： Sang Hoo Dhong ,  Joel Abraham Silberman ,  Osamu Takahashi ,  James Douglas Warnock ,  Dieter Wendel

IPC: H03K019/00

CPC classification number: G06F1/10

Abstract: Several local clock buffers are disclosed, each including an input section and an output section. The input sections are substantially identical, and include control logic and gating logic. The control logic produces a gating signal dependent upon multiple control signals and a time-delayed global clock signal. The gating logic produces an intermediate clock signal dependent upon the global clock signal and the gating signal. The output section produces at least one local clock signal dependent upon the intermediate clock signal. In one embodiment, the output section produces a first local clock signal dependent upon the intermediate clock signal and a second local clock signal dependent upon the first local clock signal. In another embodiment, the gating logic produces the intermediate clock signal dependent upon the global clock and gating signals and a feedback signal. The output section produces the feedback signal and one or more local clock signals.