基于CCD图像传感器的LVDS接口电路设计

发布时间：2018-01-14 18:36

本文关键词：基于CCD图像传感器的LVDS接口电路设计　出处：《吉林大学》2017年硕士论文　论文类型：学位论文

更多相关文章： LVDS 驱动器 串行化器 高速接口

【摘要】：随着信息技术的跨越式发展和互联网技术的不断进步,人类社会逐渐走进大数据时代,我们对硬件的要求也越来越高。除了更快的多任务处理速度,也在要求更高的数据传输速度。比如在目前使用的个人电脑中,CPU的运算速度已经大幅度领先了内存的存取速度。所以,高速接口电路的研究逐渐成为热点。LVDS(Low Voltage Differential Signaling)即低压差分信号接口电路,是现在非常热门的一种接口技术。由ANSI/TIA/EIA-644A协议规定其具体的电学参数。LVDS接口电路技术可以替换我们常用的COMS和TTL信号,并且具有传统信号所不具有的优势:接近2Gb/s的点对点传输速率,有效抑制共模噪声和实现更低的功耗和噪声。本文提出了一种功能完备的电路系统,主要包括串行化器和LVDS驱动器两部分,应用于大量并行信号的高速传输。具有传输速率快,可移植性强的特点。串行化器包括移位寄存器电路,时钟产生电路,同步电路,帧信号产生电路,测试电路五部分组成。LVDS驱动器电路由驱动器主体电路,单端转差分电路,共模反馈电路,偏置电路,电阻网络电路,相位校准电路,模拟缓冲器电路和带隙基准电路。在对接口电路的两部分具体分析和仿真验证基础上,采取了全定制的版图方案,设计了一款LVDS输出接口电路的测试芯片,并使用0.18μm CMOS工艺流片和封装。针对测试芯片的工作特点设计了一款专门用于测试的PCB电路。对芯片进行功能和性能测试。芯片在各种极限情况下的后仿真结果均能达到640Mb/s的数据传输速率。并在实际测试中,各项功能和性能都达到了设计要求。
[Abstract]:With the leapfrog development of information technology and the continuous progress of Internet technology, the human society has gradually entered the big data era, and we have higher and higher requirements for hardware, except for the faster multi-task processing speed. It is also demanding higher data transfer speeds. For example, the computing speed of CPU in current personal computers is already significantly ahead of memory access speed. So. The research of high speed interface circuit has gradually become a hot topic. LVDS low Voltage Differential signaling) is a low voltage differential signal interface circuit. It is a very popular interface technology at present. The specific electrical parameters. LVDS interface circuit technology can replace our commonly used COMS and COMS interface circuit technology, which is defined by the ANSI/TIA/EIA-644A protocol. TTL signal. And it has the advantages of approaching the point-to-point transmission rate of 2GB / s, effectively suppressing the common-mode noise and achieving lower power consumption and noise. In this paper, a fully functional circuit system is proposed. It mainly includes serializer and LVDS driver, which is used in high speed transmission of a large number of parallel signals. It has the characteristics of high transmission rate and high portability. The serializer includes shift register circuit. Clock generation circuit, synchronization circuit, frame signal generation circuit, test circuit. LVDS driver circuit consists of driver main circuit, single end to differential circuit, common-mode feedback circuit, bias circuit. Resistive network circuit, phase calibration circuit, analog buffer circuit and bandgap reference circuit. Based on the detailed analysis and simulation of the interface circuit, a fully customized layout scheme is adopted. A test chip of LVDS output interface circuit is designed. And use 0.18 渭 m. CMOS process flow sheet and package. According to the working characteristics of the test chip, a special PCB circuit is designed for testing. The function and performance of the chip are tested. The post-simulation results of the chip under various limiting conditions are given. Can reach 640 Mb / s data transmission rate, and in the actual test. Each function and performance all met the design request.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP334.7;TP212

【相似文献】