V-by-One发送器的设计与验证

发布时间：2018-02-02 18:22

本文关键词： V-by-One 发送器 4K传输　出处：《西安电子科技大学》2014年硕士论文　论文类型：学位论文

【摘要】：V-by-One是一种新近兴起串口通信标准,该标准开发的主要目的是为了替代VESA标准的LVDS技术,其主要优势包括:能够满足最高4Gbps的带宽传输(有效传输率3.2Gbps);不带时钟传输;可以传输3D格式视频和网络电视;支持4K分辨率,纵横比为21:9等。随着4K智能电视时代的来临,V-by-One技术凭借其特有优势必将取得更加广泛推广和应用,因此在电视中如何用V-by-One技术实现视频传输将会是一个新的研究热点。在以上背景下,本文基于4K 60Hz视频传输的设计目标,在充分研究V-by-One协议基础上,提出一种支持4K 60Hz视频传输的V-by-One数字发送器电路的8通道传输方案。该方案基于模块复用思想,将发送器分为对称的两个块,设计时只需考虑实现一个块的4通道传输。与一般8通道传输方案相比,本文方案降低了发送器的控制难度和时钟需求,且后续可以很方便的进行通道拓展来支持更高帧率的4K视频传输。本文研究并实现了以下规格的V-by-One数字发送器电路设计:支持YCbCr444/422、RGB等颜色格式;支持6/8/10/12bit等色彩深度;支持1/2/4/8的可配置传输通道数;输出链路顺序可控;最高工作频率400 MHz;满足V-by-One1.4协议。本文设计8B10B编码器时,在分析传统查找表电路实现方案基础上,基于协议规定的编码需求,研究并提出一种新的编码电路实现方案。相比传统方案,本文方案使用逻辑运算结合查找表方式来编码,所需码表存储大小从272 bit减小为44bit,降低了83.8%。本文方案对D码和K码统一处理,简化了RD控制结构。本文对实现的发送器电路,根据设计规格作了充分的测试点分解并搭建验证平台进行了功能验证。具体功能验证时,本文针对各个功能模块和发送器整体的仿真结果作了详细分析,同时统计验证代码覆盖率为98.3%,保证了验证工作的正确性和完备性。本文选用Cyclone III系列的EP3C16F484C6器件,在Quartus II13.0平台上对发送器进行了FPGA综合和时序分析,其结果表明发送器电路在400 MHz最大目标工作频率下时序可收敛,从而证明本文设计发送器可以满足4K 60Hz视频传输目标。
[Abstract]:V-by-One is a newly rising serial communication standard. The main purpose of this standard is to replace the LVDS technology of VESA standard. Its main advantages include: being able to meet up to 4Gbps bandwidth transmission (effective transmission rate 3.2Gbps); No clock transmission; Can transmit 3D format video and network TV; Support 4K resolution, aspect ratio is 21: 9. With the advent of 4K intelligent television era, V-by-One technology will be more widely spread and applied with its unique advantages. Therefore, how to realize video transmission with V-by-One technology in TV will be a new research hotspot. Under the above background, this paper based on the design goal of 4K60Hz video transmission. Based on the research of V-by-One protocol. An 8-channel transmission scheme for V-by-one digital transmitter circuit supporting 4K60Hz video transmission is proposed. Based on the idea of module reuse, the transmitter is divided into two symmetrical blocks. The design only need to consider the implementation of a block of 4-channel transmission. Compared with the general 8-channel transmission scheme, this scheme reduces the control difficulty and clock requirements of the transmitter. And the subsequent channel can be easily extended to support higher frame rate 4K video transmission. This paper studies and implements the following specifications of the V-by-One digital transmitter circuit design:. Support for YCbCr444/422. Color format such as RGB; Support 6 / 8 / 10 / 12 bit color depth; The number of configurable transmission channels that support 1 / 2 / 4 / 8; Output link sequence is controllable; The highest working frequency is 400 MHz; This paper designs 8B10B encoder, on the basis of analyzing the realization scheme of traditional look-up table circuit, based on the coding requirement stipulated by the protocol. This paper studies and proposes a new scheme of coding circuit. Compared with the traditional scheme, this scheme uses logic operation combined with look-up table to code. The storage size of the code table is reduced from 272 bit to 44 bits, which is 83.8. the scheme of this paper unifies the processing of D code and K code. The structure of Rd control is simplified. According to the design specification, the circuit of transmitter is decomposed according to the design specification, and the verification platform is built for functional verification. In this paper, the simulation results of each function module and transmitter are analyzed in detail, and the code coverage of statistical verification is 98.3%. The correctness and completeness of the verification work are ensured. In this paper, the EP3C16F484C6 devices of Cyclone III series are selected. The FPGA synthesis and timing analysis of the transmitter are carried out on the Quartus II13.0 platform. The results show that the transmitter circuit can converge at the maximum target frequency of 400 MHz. It is proved that the transmitter designed in this paper can meet the target of 4K 60 Hz video transmission.
【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】：2014
【分类号】：TN919.81

【相似文献】