• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advances in Computing >A Novel High Accuracy Digital Lock Detector with False Lock Detection
【24h】

A Novel High Accuracy Digital Lock Detector with False Lock Detection

机译：具有误锁检测功能的新型高精度数字锁检测器

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The purpose of this paper is to introduce a new circuit into the traditional DLL to define the lock condition. Fully digital lock detector is presented where the design is simple and process independence. The lock detector consists of two main blocks, LOCK INDICATOR and CORRECT LOCK INDICATOR. The lock detector has been integrated with an 8-phase DLL and a circuit simulation has been done. Compare to conventional lock detector circuit, the proposed lock detector can detect false lock (when CLKOUT and CLKREF is 180° out of phase) by just using an X-OR gate. The proposed circuit also compares both the positive and negative cycle of the CLKREF and CLKOUT; hence the detection is more accurate. By using this lock detection method, the lock detector can detect down to 2ps phase offset between the CLKREF and CLKOUT. The CORRECT LOCK INDICATOR block is introduced to detect whether the CLKOUT is locked to the CLKREF by exactly one clock cycle. Hence, this block also serves as false lock detector.
机译：本文的目的是在传统的DLL中引入一种新电路来定义锁定条件。提出了全数字锁检测器，其设计简单且过程独立。锁定检测器由两个主要块组成：LOCK INDICATOR和CORRECT LOCK INDICATOR。锁定检测器已与8相DLL集成在一起，并且完成了电路仿真。与传统的锁定检测器电路相比，提出的锁定检测器仅使用X-OR门就能检测到错误锁定（当CLKOUT和CLKREF异相180°时）。该电路还比较了CLKREF和CLKOUT的正周期和负周期。因此检测更加准确。通过使用这种锁定检测方法，锁定检测器可以检测到CLKREF和CLKOUT之间的相位偏移低至2ps。引入了CORRECT LOCK INDICATOR模块以检测CLKOUT是否仅在一个时钟周期内被锁定至CLKREF。因此，该块还用作错误锁定检测器。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号