三星s3c6410液晶显示器@ 1024x768噪音 [英] samsung s3c6410 LCD Display @ 1024x768 noise

问题描述

我正在为基于三星s3c6410 667Mhz，128MB Ram DDR x16 Hinyx 3-3-3的电路板开发CE图像。



我正在使用Windows CE 6.0 R3， 最新的三星BSP和所有QFE安装。



当我尝试使用显示控制器@ 1024x768 16bit时，一些奇怪的"噪音"出现在液晶显示屏上。



"噪音"如果我尝试从Flash / SD卡读取/写入或使用后处理器执行YUV到RGB转换，则会增加。



我认为显示控制器FIFO有时会变空并且序列发生器继续输出旧数据，当其他启用DMA的设备使用总线时，它会更频繁地发生.b






有没有人遇到过同样的问题？

I'm developing a CE Image for a board based on samsung s3c6410 667Mhz, 128MB Ram DDR x16 Hinyx 3-3-3 .

I'm using Windows CE 6.0 R3 ,  Latest Samsung BSP and all QFE installed.

When I try to use the display controller @ 1024x768 16bit some strange "noise" appears on LCD.

The "noise" increase if I try to read/write from Flash / SD Card or use Post Processor to perform YUV to RGB conversion.

I think that the Display controller FIFO sometimes became empty and the sequencer continues to output old data,

more frequently it happen when the bus is used by other DMA enabled devices.



Have anyone experienced the same problem?

推荐答案

当然 我不熟悉该处理器，但许多（可能是所有）包含显示控制器的ARM处理器在系统总线上使用DRAM作为显示RAM。  当显示控制器无法读取系统总线时，如果
将数据发送到显示器，那么您将看到一些撕裂（噪音）。

Sure.  I am not familiar with that processor, but many, maybe all, ARM processors that include a display controller use DRAM on the system bus for display RAM.   When that system bus is not available to the display controller to read when it is sending data to the display, then you will see some tearing (noise).

您可能需要调整总线时间以优先显示控制器而不是你的闪存/ SD卡...

You may need to adjust bus timing to give priority to the display controller instead of your flash/SD card...

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