发明名称 |
FREQUENCY CALIBRATION CIRCUIT FOR AUTOMATICALLY CALIBRATING FREQUENCY AND METHOD THEREOF |
摘要 |
A serial interface engine generates a series of digital data according to a pair of differential signals received from a high-speed Universal Serial Bus host and/or a full-speed universal serial bus host. Then, a packet identification (PID) unit identifies a packet identification of a start of each frame and a first period between two consecutive packet identifications according to the series of digital data. A count comparator is used for generating a calibration signal to calibrate an output frequency of an oscillator according to the first period. |
申请公布号 |
US2012056651(A1) |
申请公布日期 |
2012.03.08 |
申请号 |
US20100907013 |
申请日期 |
2010.10.18 |
申请人 |
SHEN HUAN-HSIANG;CHEN CHIH-KAO;KUO CHIEN-CHENG |
发明人 |
SHEN HUAN-HSIANG;CHEN CHIH-KAO;KUO CHIEN-CHENG |
分类号 |
H03L7/08 |
主分类号 |
H03L7/08 |
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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