公开(公告)号：US20060193413A1

公开(公告)日：2006-08-31

申请号：US11340946

申请日：2006-01-26

Applicant: Prasenjit Shandilya ,  Yong-In Han

Inventor： Prasenjit Shandilya ,  Yong-In Han

IPC: H04L7/00

CPC classification number: H03K5/135 ,  H03M9/00 ,  H04L7/0338

Abstract: A method of capturing data that are transferred in synchronization with a data strobe signal. The method includes sampling a data strobe signal at a clock frequency higher than a data rate to detect a transition point of the data strobe signal (e.g., by generating and comparing a plurality of sampled data strobe signals), and sampling data to generate sampled data, and selecting reliable data among the sampled data based upon the transition point. A data capture circuit that captures data transferred in synchronization with a data strobe signal, includes a data strobe signal sampling circuit, a data sampling circuit, and may further include a transition position-indicating signal (case) generator and a data selection circuit. Accordingly, the method and the data capture circuit may effectively capture the data transferred in synchronization with the data strobe signal without employing or including a DLL on the chip.

Abstract translation: 一种捕获与数据选通信号同步传送的数据的方法。 该方法包括以高于数据速率的时钟频率采样数据选通信号，以检测数据选通信号的转变点（例如，通过产生和比较多个采样的数据选通信号）和采样数据以产生采样数据 并且基于该转换点在采样数据中选择可靠数据。 捕获与数据选通信号同步传送的数据的数据捕捉电路包括数据选通信号采样电路，数据采样电路，还可以包括转移位置指示信号（情况）发生器和数据选择电路。 因此，该方法和数据采集电路可以有效地捕获与数据选通信号同步地传送的数据，而不在芯片上使用或包括DLL。