发明名称 |
PHASE-LOCKED LOOP CIRCUITRY WITH MULTIPLE VOLTAGE-CONTROLLED OSCILLATORS |
摘要 |
Configurable phase-locked loop circuitry is provided. The phase-locked loop circuitry may include a buffer having a buffer output and a multiplexer having inputs and an output. The phase-locked loop circuitry may include multiple voltage-controlled oscillators. The phase-locked loop circuitry may be configured to switch a desired one of the voltage-controlled oscillators into use. Each voltage-controlled oscillator may be controlled by control signals applied to a control input for that voltage-controlled oscillator. The control input of each voltage-controlled oscillator may be connected to the buffer output. The output of each voltage-controlled oscillator may be connected to a respective one of the multiplexer inputs. Power-down transistors may be used to disable unused voltage-controlled oscillators to conserve power. The power-down transistors and the multiplexer may be controlled by signals from programmable elements. One or more of the voltage-controlled oscillators may be implemented using a separate integrated circuit connected using through-silicon vias.
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申请公布号 |
US2009315627(A1) |
申请公布日期 |
2009.12.24 |
申请号 |
US20080142746 |
申请日期 |
2008.06.19 |
申请人 |
BEREZA WILLIAM W;PATEL RAKESH H |
发明人 |
BEREZA WILLIAM W.;PATEL RAKESH H. |
分类号 |
H03L7/00 |
主分类号 |
H03L7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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