This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DS90UB947-Q1: DS947+DS948输出给LCD偶现花屏

Part Number: DS90UB947-Q1
Other Parts Discussed in Thread: ALP

Dear TI,

LCD分辨率是1920x720@ 60,ub947在主板上双lvds跟Soc连接,UB948在TFT板上,TFT板上有一颗MCU,UB948的时序和寄存器配置都由TFT板上MCU配置。

出现问题时测量948 lock脚一直是高,Soc的PCLK是稳定输出。拔插FPD-LINKIII双绞线后显示依然花屏。概率很低,量产几千台偶现几台。

MODE_SEL硬件配置如下(软件未配0x4f寄存器):

花屏时查看整个947寄存器跟正常时一样。查看0x4f寄存器值是0x0

此时输入命令修改0x4f寄存器为0xc0再改回0x0,整个显示正常了。

希望能帮忙分析下。

感谢!