发明名称 |
Method and apparatus for calibration of a low frequency oscillator in a processor based system |
摘要 |
Method and apparatus for calibration of a low frequency oscillator in a processor based system. A method for calibrating an on-chip non-precision oscillator. An on-chip precision oscillator is provided having a known frequency of operation that is within an acceptable operating tolerance. The on-chip precision oscillator is used as a time base and then the period of the on-chip oscillator is measured as a function of the time base. The difference between the measured frequency of the on-chip non-precision oscillator and a desired operating frequency of the on-chip non-precision oscillator is then determined. After the difference is determined, the frequency of the on-chip non-precision oscillator is adjusted to minimize the determined difference.
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申请公布号 |
US7250825(B2) |
申请公布日期 |
2007.07.31 |
申请号 |
US20040865110 |
申请日期 |
2004.06.10 |
申请人 |
SILICON LABS CP INC. |
发明人 |
WILSON BRENT;HIGHLEY PAUL;FERNALD KENNETH W. |
分类号 |
G01R23/10;H03B1/00;H03L1/02;H03L7/08 |
主分类号 |
G01R23/10 |
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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