Invention Grant
- Patent Title: Controlled clock phase generation
- Patent Title (中): 控制时钟相位生成
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Application No.: US12640842Application Date: 2009-12-17
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Publication No.: US08258837B2Publication Date: 2012-09-04
- Inventor: Praveen Mosalikanti , Nasser Kurd
- Applicant: Praveen Mosalikanti , Nasser Kurd
- Applicant Address: US CA Santa Clara
- Assignee: Intel Corporation
- Current Assignee: Intel Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Garrett IP, LLC
- Main IPC: H03L7/06
- IPC: H03L7/06

Abstract:
Methods and systems to generate multiple phases of a clock may include a delay locked loop (DLL) to generate a bias signal to control a delay time through DLL delay elements in response to a first clock, and a plurality of a quadrature slave delay lines (SDLs), each to generate a plurality of successively phase shifted clocks over a quadrant of a corresponding selected phase of a second clock. The SDLs may be biased with the DLL bias signal to control phase differences between the generated clocks. One or more phase interpolators, such as contention based phase interpolators, may be coupled to outputs of each SDL. A frequency of the second clock may be equal to or greater than a frequency of the first clock. The SDLs may be implemented with fewer delay elements than the DLL.
Public/Granted literature
- US20110148486A1 CONTROLLED CLOCK GENERATION Public/Granted day:2011-06-23
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