发明名称 |
METHODS AND DEVICES FOR IMPLEMENTING ALL-DIGITAL PHASE LOCKED LOOP |
摘要 |
<p>Methods and devices provide for determining whether to operate a radio frequency synthesizer in a first mode of operation or a second mode of operation based on a reference frequency signal. The radio frequency synthesizer includes a digitally-controlled oscillator configured to generate an oscillator signal having an output frequency. A digital frequency locked-loop is configured to control the output frequency of the oscillator signal in a first mode of operation based on a first control signal. A digital phase locked-loop is configured to control the output frequency of the oscillator signal in a second mode of operation based on a second control signal. A controller determines whether to operate in the first mode or second mode based on a reference frequency signal. The controller generates the first or second control signal based on the determination of operating in the first or second mode, respectively.</p> |
申请公布号 |
EP2681844(A2) |
申请公布日期 |
2014.01.08 |
申请号 |
EP20120752654 |
申请日期 |
2012.02.27 |
申请人 |
MARVELL WORLD TRADE LTD. |
发明人 |
BURG, OLIVIER;KIRSCH, MIGUEL |
分类号 |
H03L7/00;H03D3/24;H03L7/099;H03L7/113;H03L7/16 |
主分类号 |
H03L7/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|