LCD_CLK that runs XGA (1024 x 768)

[Mna.1]

LCD_CLK that runs XGA (1024 x 768)

Thank you for helping.

environment:

STM32CubeIDE Ver1.5.0

MCU: STM32F769BI

Board: Custum

It seems that this microcomputer supports up to XGA, but LCD_CLK for XGA is not output.

Create LCD_CLK with PLL using a 25MHz crystal.

The XGA LCD panel is instructed to use a 65MHz clock with a Typ. Value.

If fps is 60 in XGA, I think that a clock of about 65MHz is required.

When I try to set 65MHz in the Clock configuration of the IDE, the output is DC.

I haven't looked at it in detail, but it seems to be output at around 10MHz or 30MHz.

GPIO_SPEED_FREQ_VERY_HIGH is selected as the GPIO speed.

How can I output a 65MHz LCD_CLK?

Also, what is the maximum frequency of LCD_CLK that can be output by STM32F769BI?

Thank you. 

[Tesla DeLorean]

As I recall the DSI with a 16-bit colour depth would give the clock a ceiling of around 62.5 MHz, with 24-bit 41.67 MHz

I had 1024x768 running at 57 Hz and 51 Hz on the DSI/HDMI

[Mna.1]

Hi Tesla DeLorean

Thank you for your reply.

In my case, I use RGB0-7, HSYNC, VSYNC, DE, LCD_CLK signals.

I would like to know the maximum frequency of LCD_CLK in this case.

Thank you.