Delay locked loop for use in semiconductor memory device

作者: Seong-Hoon Lee

DOI:

关键词: Phase-locked loopSynchronous circuitRound-trip delay timeDelay-locked loopGroup delay and phase delayShift registerSelf-clocking signalMathematicsDelay line oscillatorControl theory

摘要: A delay locked loop (DLL) is disclosed which has finer adjustability. The generally includes: a first shift register (330) for controlling amount of an internal clock in response to shift-right signal and shift-left signal, line (340) delaying the according output register, wherein includes plurality units, each unit having amount; second (350) are outputted from register; (360) by predetermined larger than amount.

参考文章(8)
Syuji Matsuo, Koichi Kitamura, Itsurou Taniyoshi, Tetsuo Saitoh, Digital phase locked loop having coarse and fine stepsize variable delay lines ,(1995)
Masao Taguchi, Ayako Kitamoto, Masato Matsumiya, Mitsuhiro Higashiho, Toru Koga, Hideki Kano, Yoshinori Okajima, Toshikazu Nakamura, Kuninori Kawabata, Masato Takita, Satoshi Eto, Koichi Nishimura, Variable delay circuit and semiconductor integrated circuit device ,(2000)
Jean-Marc Patenaude, Ian Kyles, Continuously adjustable delay circuit ,(1998)