- 专利标题: PHASE ERROR COMPENSATION CIRCUIT AND METHOD FOR COMPENSATING PHASE ERROR BETWEEN REFERENCE CLOCK AND FEEDBACK CLOCK
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申请号: US18234346申请日: 2023-08-15
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公开(公告)号: US20240171162A1公开(公告)日: 2024-05-23
- 发明人: Wei-Hao Chiu , Song-Yu Yang , Ang-Sheng Lin
- 申请人: MEDIATEK INC.
- 申请人地址: TW Hsin-Chu
- 专利权人: MEDIATEK INC.
- 当前专利权人: MEDIATEK INC.
- 当前专利权人地址: TW Hsin-Chu
- 主分类号: H03K5/01
- IPC分类号: H03K5/01 ; H03L7/08
摘要:
A phase error compensation circuit and a method for compensating a phase error between a reference clock and a feedback clock are provided. The phase error compensation circuit includes a first programmable delay circuit, a second programmable delay circuit and at least one swapping circuit. The first programmable delay circuit provides a first delay. The second programmable delay circuit provides a second delay. At a present cycle, the first delay is unchanged, wherein the swapping circuit applies the first delay to the feedback clock for generating a compensated feedback clock and applies the second delay to the reference clock for generating a compensated reference clock. At a next cycle, the second delay is unchanged, where the swapping circuit applies the second delay to the feedback clock for generating the compensated feedback clock and applies the first delay to the reference clock for generating the compensated reference clock.
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