상세정보
등록 확산 스펙트럼 클럭 발생 회로
- 출원번호
- 13275753 (2011.10.18)
- 공개번호
- 20120105114 (2012.05.03)
- 등록번호
- 8446194 (2013.05.21)
- 출원국
- 미국
- 협약과제
- 10MB1700, 45nm급 혼성 SoC용 아날로그 회로기술, 권종기
- 초록
- Provided is a spread spectrum clock generating circuit. The spread spectrum clock generating circuit includes: a phase detector receiving a reference frequency signal from the external and detecting a phase difference between the reference frequency signal and a frequency-divided signal; a voltage controlled oscillator outputting an oscillation signal corresponding to a detection result of the phase detector; a main divider generating the frequency-divided signal by dividing a frequency of the oscillation signal by a main dividing ratio; and a dividing ratio controller generating a variable count value, generating a sub dividing ratio by performing delta-sigma modulation according to the count value, and adjusting the main dividing ratio according to the sub dividing ratio.
- KSP 제안 키워드
- Delta-Sigma Modulation, Frequency signal, Phase Difference, Reference frequency, Spread Spectrum Clock, Voltage controlled oscillator(VCO), delta-sigma, phase detector(PD), spread spectrum(SS), voltage controlled