基于手机基带芯片的LPDDR2 SDRAM控制器的设计与验证

发布时间：2018-01-12 02:22

本文关键词：基于手机基带芯片的LPDDR2 SDRAM控制器的设计与验证　出处：《西安电子科技大学》2013年硕士论文　论文类型：学位论文

更多相关文章： LPDDR2SDRAM JEDEC 控制器 验证

【摘要】：近年来，随着科学技术的进步和人们在商务、娱乐活动中对便携性需求的持续增长，消费类和商务类电子设备不断朝着移动化和便携式的方向发展。智能手机作为移动终端的代表性产品，在日常生活中有着重要地位。智能手机电池使用时间的最大化是系统设计的主要目标，同时，体积小、外形灵巧也是所要追求的目标。而存储器作为智能手机中的重要组件，它的功耗的降低和体积的减小也越来越被人们所重视，低功耗和高存储密度成为智能手机对内存的两个关键性要求。本文首先在深入研究了JEDEC发布的LPDDR2SDRAM标准的基础上，介绍了一款基于手机基带芯片的LPDDR2SDRAM控制器的总体架构和功能。然后从低功耗控制的角度出发，详细阐述了存储器时钟转换、进入/离开standby状态、复位控制、shutdown控制等功能的设计与实现。时钟转换功能可以切换三种不同频率的时钟，既满足了不同操作对于不同时钟频率的要求，又节省了功耗。而其他功能的设计保证了LPDDR2SDRAM控制器的正常运行，确保了LPDDR2SDRAM中数据的安全性的同时降低了功耗。此款LPDDR2SDRAM控制器满足了智能手机对于低功耗的需求，有一定的应用价值。论文介绍了关于LPDDR2SDRAM控制器的系统级功能验证方法，根据控制器的特点，采用了软硬件协同的系统级验证方法，基于项目设计规范定义了验证功能点，，然后根据实际应用情况，搭建了包含LPDDR2SDRAM模型的验证平台。采用定向激励验证的方法，对各个功能验证点进行了验证，最终达到对所有功能点的验证。
[Abstract]:In recent years, with the progress of science and technology and people in business, entertainment activities in the portable demand for continued growth. Consumer and business electronic devices continue to move towards the direction of mobility and portable. Smartphone as the representative product of mobile terminals. The maximization of battery life of smart phone is the main goal of system design, and it is small in size. Smart appearance is also the goal to pursue, and memory as an important component of smart phones, its power consumption and volume reduction has been paid more and more attention. Low power consumption and high storage density are the two key requirements for memory in smart phones. In this paper, the first in-depth study of the LPDDR2SDRAM standard released by JEDEC on the basis of. This paper introduces the architecture and function of a LPDDR2SDRAM controller based on mobile phone baseband chip. Then from the point of view of low power consumption control, the memory clock conversion is described in detail. The design and implementation of the functions of entering / leaving standby state, reset control and shutdown control, etc. The clock switching function can switch three different frequency clocks. It not only meets the requirements of different operation for different clock frequency, but also saves power consumption, while the design of other functions ensures the normal operation of the LPDDR2SDRAM controller. Ensures the security of the data in the LPDDR2SDRAM while reducing the power consumption. This LPDDR2SDRAM controller meets the low power requirements of the smartphone. It has certain application value. The system level verification method of LPDDR2SDRAM controller is introduced in this paper. According to the characteristics of the controller, the system level verification method based on hardware and software cooperation is adopted. The verification function point is defined based on the project design specification, and then, according to the actual application, a verification platform including LPDDR2SDRAM model is built, and the method of directional excitation verification is adopted. Each function verification point is verified, and finally all function points are verified.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP332;TN402

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