Disturbance in MIPI DSI Output Image

[MGH2023]

Hi EveryOne

By Using DSI in Video Mode, It makes this disturbance in out image, What's the Main Source of this Problem:
1. PCB Design (It's Two Layer Board, I tried My best to route it as short as possible)
2. Noise in Ext RAM Data (Using EXT RAM as Framebuffer) 
Or …

[Amel NASRI]

Hi @MGH2023 ,

Based on AN4860 (Introduction to DSI host on STM32 MCUs and MPUs), main constraint to consider to avoid altered images is the bandwidth of the host processor. The setup of the video mode interface timing is very important.

Try to follow the configuration of one of the examples described in this application note to check if the problem is still there or not.

-Amel