Compute Module • 4 lane MIPI third party display to CM4 with IO board

Hi everyone!

While learning interfaces of CM4 I've got an idea to try third party fullHD display, so I've browsed some Chinese panels and picked one: boe tv101wum-ll3, it's 4 lane MIPI and I saw proper driver for it on the web.

However, I stuck on its connecting since it has 45 pin connector and plenty of pins still stays mistery for me.
I drawn scheme of adapter for CM4 IO board connector, and I need to understand what should I do with those display pins that left unconnected. I presume I should reduce current of CM4 +3.3V to 1.8V display's VDD with resistor, but what should I do with display AVDD and AVEE pins? Should I use any other interfaces to power it? And what's with FB* pins? Does "cathode" mean I should connect it to +3.3V since this panels datasheet says its voltage supply is 1.8V/3.3V (Type.) (IOVCC/VDD)? And VLED is just to the ground? Or it is backlit power pins? Where I should get 24.8V for its max state?

I will appreciate if you even throw at me some learning material to make all it out by myself, I will be grateful for any help!

Statistics: Posted by Asa_V — Wed Jun 26, 2024 2:04 pm

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