Invention Grant
- Patent Title: Techniques for generating fractional clock signals
- Patent Title (中): 产生分数时钟信号的技术
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Application No.: US12234114Application Date: 2008-09-19
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Publication No.: US07956696B2Publication Date: 2011-06-07
- Inventor: Tim Tri Hoang , Wilson Wong , Sergey Shumarayev
- Applicant: Tim Tri Hoang , Wilson Wong , Sergey Shumarayev
- Applicant Address: US CA San Jose
- Assignee: Altera Corporation
- Current Assignee: Altera Corporation
- Current Assignee Address: US CA San Jose
- Agent Steven J. Cahill
- Main IPC: H03L7/085
- IPC: H03L7/085 ; H03B19/00

Abstract:
A circuit includes phase detection circuitry, a clock signal generation circuit, a first frequency divider, and a second frequency divider. The phase detection circuitry compares an input clock signal to a feedback signal to generate a control signal. The clock signal generation circuit generates a periodic output signal in response to the control signal. The first frequency divider divides a frequency of the periodic output signal by a first value to generate a first frequency divided signal. The second frequency divider divides the frequency of the periodic output signal by a second value to generate a second frequency divided signal. The first and the second frequency divided signals are routed to the phase detection circuitry as the feedback signal during different time intervals.
Public/Granted literature
- US20100073094A1 Techniques For Generating Fractional Clock Signals Public/Granted day:2010-03-25
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