中圖分類號(hào)： TN919.3 文獻(xiàn)標(biāo)識(shí)碼： A DOI：10.16157/j.issn.0258-7998.201211 中文引用格式： 蒙宇霆，袁海英，丁冬. 基于AXI總線的可配置LVDS控制器設(shè)計(jì)與驗(yàn)證[J].電子技術(shù)應(yīng)用，2021，47(6)：40-45，56. 英文引用格式： Meng Yuting，Yuan Haiying，Ding Dong. Design and verification of a configurable LVDS controller based on AXI bus[J]. Application of Electronic Technique，2021，47(6)：40-45，56.
Design and verification of a configurable LVDS controller based on AXI bus
Meng Yuting，Yuan Haiying，Ding Dong
School of Microelectronics，F(xiàn)aculty of Information Technology，Beijing University of Technology，Beijing 100124，China
Abstract： In view of the differences of data bit width, frame format and storage mode and flexibility of data transmission in different application scenarios，a configurable LVDS controller based on AXI bus was proposed. In order to achieve precise control of LVDS controller, a configurable register module based on APB interface was added, and data transmission was controlled by software on the SoC system, which effectively improved the flexibility of data transmission and reception. In order to improve the transmission efficiency and widely adapt to the scenario requirements, the interface that interacts with the memory is defined as the interface of the AXI protocol. In order to avoid data transmission errors and packet loss, a parity function was added to the custom protocol and the packet checking mechanism was added to the circuit. Then, an efficient loopback verification scheme was used to perform functional tests on the LVDS controller. The experimental results show that the LVDS controller based on AXI interface can accurately and efficiently realize the data transmission and reception function between the peer devices. This configurable data transmission circuit design and verification scheme is flexible and feasible, so that it can be widely used in video image data transmission.
Key words : AXI bus；LVDS controller；high-speed interface；configurable module；data transceiver
