发明名称 |
CHARGE PUMP CALIBRATION FOR DUAL-PATH PHASE-LOCKED LOOP |
摘要 |
<p>Embodiments of the invention are generally directed to charge pump calibration for a dual-path phase-locked loop circuit. An embodiment of an apparatus includes a phase frequency detector; an integral path including a first charge pump; a proportional path including a second charge pump; and a calibration mechanism for the first charge pump and the second charge pump, the calibration mechanism including a phase detector to detect whether a reference clock signal or a feedback clock signal is leading or lagging in phase and to generate a signal indicating which clock signal is leading or lagging, a first memory element and a second memory element to store the signal from the phase detector, a first control logic to adjust current for the first charge pump based on the value stored in the first memory element, and a second control logic to adjust current for the second charge pump based on the value stored in the second memory element.</p> |
申请公布号 |
WO2015113308(A1) |
申请公布日期 |
2015.08.06 |
申请号 |
WO2014CN71848 |
申请日期 |
2014.01.30 |
申请人 |
SILICON IMAGE, INC. |
发明人 |
TONG, BAOLI;SONG, FEI;LIN, XIAOZHI;WANG, XIAOFENG |
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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