Electrical engineering Phase locked loop (PLL) - based clock and data recovery circuit (CDR) using calibrated delay flip flop (DFF) SAN JOSE STATE UNIVERSITY Shahab Ardalan WaghelaSagarA Delay Flip Flop (DFF) is used in the phase detector circuit of the clock and data recovery circuit. A ...
基于PLL的CDR具有与PLL相同的组件。主要区别在于相位检测方案。CDR中使用的相位检测器与PLL中使用的相位频率检测器(PFD)不同。它应该检测数据的切换以及数据与恢复时钟之间的相位差异。另一个区… PLL - MATLAB 建模(1) 做IC设计的Simon 清华大学 电子信息硕士 ...
随后讲述嵌入式时钟(CDR-based)和前向时钟系统的高性能时钟电路。本教程总结了当前/未来的I / O研究方向和光学I / O的介绍。 This course provides an overview of circuit design techniques relevant to high-speed I/O transceivers used in wireline communication systems. The first part of the course will...
非常经典 清华大学 李宇根 PLL讲义 Lecture11 Spring Semester, 2008 PLL DESIGN AND CLOCK/FREQUENCY GENERATION (Lecture 11) Woogeun Rhee Institute of Microelectronics Tsinghua University
I don't know if there's enough toggle to make the soft-cdr work well. (But I will try this solution in out project. ) Based on this consideration, I try to design one soft-cdr which I need learn more knowledge about this technology. BRs, Lambert Translate 0 Kudos Copy link Re...
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Design parameters for a charge-pump PLL-based clock and data recovery (CDR) with fast phase acquisition are derived using a time-domain model that does not assume narrow loop bandwidth or small phase errors. Implementation in a half-rate CDR circuit confirms a clock phase acquisition time of ...
2020年9月，依据芯片一级代理商的新工厂所提出的哀求减少税务的请求表明，芯片一级代理商有意出资32亿...
On my PCBA design based on i.MX6ULL. the base system is Linux OS. Now we measured the DDR frequency with Oscilloscope and confirmed it's 307MHz. Then we read the register's value of CBCDR, CBCMR and CCM_ANALOG_PFD_528n and got the following value: Value at address 0x20C4...
For the purpose of achieving the above objective, in a dual loop PLL of the present invention, a frequency comparison is efficiently performed based on a dichotomizing search method. A dual loop PLL of the present invention comprises: a frequency comparison loop which includes a frequency compa...