基于DS90UB949A的车载大屏测试系统

Vehicle Large Screen Test System Based on DS90UB949A

文章首先阐述以DS90UB949A作为核心的HDMI转FPD-LinkIII视频传输原理,以及IIC远程透传功能的原理,最后详细介绍STM32F407单片机实现USB通信控制、IIC工作模式及数据配置、EDID参数设置、DS90UB949A工作模式配置和IIC透传触摸报点等功能。

This paper firstly describes the principle of HDMI to FPD-LinkIII video transmission based on DS90UB949A as the core,and the principle of IIC remote transparent transmission function.Finally,it introduces the USB communication control realized by STM32F407 microcontroller in detail.The functions of IIC working mode and data configuration,EDID parameter setting,DS90UB949A working mode configuration and IIC transparent touch signal are realized.