Invention Grant
- Patent Title: Method and apparatus for counter-based clock signal adaptation
- Patent Title (中): 用于基于时钟信号适应的方法和装置
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Application No.: US12240645Application Date: 2008-09-29
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Publication No.: US07786782B2Publication Date: 2010-08-31
- Inventor: Scott Te-Sheng Lien , Mark Men Bon Ng , Jesse H. Jenkins, IV
- Applicant: Scott Te-Sheng Lien , Mark Men Bon Ng , Jesse H. Jenkins, IV
- Applicant Address: US CA San Jose
- Assignee: Xilinx, Inc.
- Current Assignee: Xilinx, Inc.
- Current Assignee Address: US CA San Jose
- Agent Michael T. Wallace; John J. King
- Main IPC: H03K3/017
- IPC: H03K3/017

Abstract:
A method and apparatus to implement clock signal adaptation is provided to characterize an input clock signal that is to be adapted and in response, generate adaptation updates at each subsequent clock cycle of the input clock signal. In a first embodiment, clock signal adaptation occurs through duty cycle correction (DCC) to substantially achieve a 50% duty cycle. In an alternate embodiment, clock signal adaptation occurs through a multiplication operation that is applied to the clock signal to be adapted, whereby the multiplication operation is parameterizable to allow odd/even multiplication. In an alternate embodiment, clock signal adaptation occurs through a phase-shift operation that is applied to the clock signal to be adapted, whereby the phase-shift operation is parameterizable to allow all possible fractions and percentages of phase shifts.
Public/Granted literature
- US20100079182A1 METHOD AND APPARATUS FOR COUNTER-BASED CLOCK SIGNAL ADAPTATION Public/Granted day:2010-04-01
Information query
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