|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||375/362; 375/130; 375/140; 375/147; 375/316; 375/148; 375/354; 375/356; 375/371; 375/373; 375/376; 375/374; 375/375|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 1 인용 특허 : 3|
Embodiments allow for the use of the SS modulation technique (and thus for significant reduction of EMI due to clock transmission) in scenarios involving tight synchronization requirements between two devices. In particular, embodiments can be used in high-speed communication networks (e.g., high-speed Ethernet) where a clock signal embedded in the data stream at the transmitter and recovered from the data stream at the receiver is the only source for synchronization between the transmitter and the receiver (i.e., no other synchronization channel availab...
1. A system, comprising: a clock and data recovery (CDR) circuit configured to receive a data stream having embedded therein a spread spectrum (SS) modulated clock signal and to generate a recovered clock signal from the data stream;a phase tracking circuit, coupled to the CDR circuit, configured to determine a phase offset between the recovered clock signal and a local clock signal;a controller configured to read the determined phase offset and to generate a control signal based on the determined phase offset; andan oscillator configured to adjust the l...