Part Number: DS90UB947-Q1
Hello:
I'm debugging a display, which has strict timing requirements. Currently, only the backlight is on, but no image is displayed.
1. Reading the status of ub947, I detected a stable PCLK signal. Reading the resolution feedback register of ub948 shows the correct value (1920x720).
2. When configuring ub947 for image generation with external clock and internal timing, the screen displays normally.
3. When configuring ub947 for image generation with external clock and external timing, only the backlight turns on—no image appears.
4. I tested another display with different specifications, whose timing is compatible with the current non-displaying screen, and it works properly.
On the SoC side, I've configured the typical timing values for the display. I'd like to know whether this issue could be caused by timing deviations in the timing parameters parsed by ub947?
