发明授权
- 专利标题: Method and apparatus for static phase offset correction
- 专利标题(中): 静态相位偏移校正的方法和装置
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申请号: US10425213申请日: 2003-04-28
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公开(公告)号: US07111186B2公开(公告)日: 2006-09-19
- 发明人: Zhigang Han , Cong Khieu , Kailashnath Nagarakanti
- 申请人: Zhigang Han , Cong Khieu , Kailashnath Nagarakanti
- 申请人地址: US CA Santa Clara
- 专利权人: Sun Microsystems, Inc.
- 当前专利权人: Sun Microsystems, Inc.
- 当前专利权人地址: US CA Santa Clara
- 代理机构: Gunnison, McKay & Hodgson, L.L.P.
- 代理商 Lisa A. Norris
- 主分类号: G06F1/12
- IPC分类号: G06F1/12
摘要:
A CPU clock signal generated from a phase lock loop (PLL) circuit and a feedback signal of the PLL circuit are used in generating a JBUS clock signal. The CPU clock signal and the feedback signal include the same amount of static phase offset introduced by the PLL circuit. The CPU clock signal and the feedback signal are input to an alignment detection circuit and used in generating the JBUS clock signal. In one embodiment, the JBUS clock signal is generated in synchronization with the CPU clock signal and having the frequency of the feedback signal. The present invention reduces or eliminates misalignment of the leading edge of the JBUS signal with reference to a specific leading edge of the CPU clock signal due to the presence of static phase offset introduced by the PLL circuit.
公开/授权文献
- US20040215993A1 Clock align technique for excessive static phase offset 公开/授权日:2004-10-28
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