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C6748 lcd控制器

Chengyi Yu
Intellectual 260 points


用C6748的lcd控制器，lcd显示的时候经常会跳屏。有时候又是好的。有时候就是显示区域会错位，跳屏。我设置lcd最高优先级，给了一个内存地址0XC1f00000

  • 0
    TI__Guru 64206 points

    按下面步骤，应该能解决你的问题：

    •In order to ensure LCDC bandwidth to prevent flicker issue, adjust system and LCDC configuration as below:
    –1. set system configure register MSTPRIx to ensure LCDC is highest priority on SCR, other master lower than LCDC, 0 is highest priority.
    –2. set DDR BPPBR register to 0x20 or less.
    –3. set LCDDMA_CTRL[TH_FIFO_READY] = 5h or 4h, and 

                    LCDDMA_CTRL[BURST_SIZE] = 4  

    –4. set RASTER_CTRL[PLM]= 2(data only) after LCD load palette.