대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)
- 대한전자공학회 2006년도 하계종합학술대회
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- Pages.509-510
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- 2006
고속 locking time을 갖는 Frequency Locked Loop(FLL)
Fast Locking FLL (Frequency Locked Loop) For High - speed Wireline Transceiver
- 송민영 (고려대학교 공과대학 전자전기공학부) ;
- 이인호 (고려대학교 공과대학 전자전기공학부) ;
- 곽영호 (고려대학교 공과대학 전자전기공학부) ;
- 김철우 (고려대학교 공과대학 전자전기공학부)
- Song, Min-Young (Electronics and Electrical Engineering Department Korea University) ;
- Lee, In-Ho (Electronics and Electrical Engineering Department Korea University) ;
- Kwak, Young-Ho (Electronics and Electrical Engineering Department Korea University) ;
- Kim, Chul-Woo (Electronics and Electrical Engineering Department Korea University)
- 발행 : 2006.06.21
초록
FLL (Frequency Locked Loop) is the core block for high-speed transceiver. It incorporates a PLL for fine locking action, and a coarse controller for coarse locking action. A coarse controller compares frequencies coarsely and is applied to detected frequency difference directly. Compare to conventional FLL, frequency is applied to proposed FLL. Proposed FLL in this paper achieves only 5 cycles for coarse lock and total frequency locking time is 5 times faster than conventional FLL. Thus, proposed FLL is more useful to Ethernet transceiver application that requires high-speed data transfer than conventional FLL. Proposed FLL is based on
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