Need help initializing Chip on lcd display

Thread Starter

Kyle M 1

Joined Feb 9, 2019
6
I have a lcd display running of a Rasberry pi and then going to a TFP401 HDMI/DVI Decoder then to a break out board then to the round display. The backlight turns on and i am getting data from the RGB bus (As far as i can hell by hooking up a scope to it and the signal changes as a change from the GUI to the terminal). But there is no image displaying on the display. What i am thinking is that the chip is not getting initialized correctly and was wondering how to get the chip to initialize.
Provided are data sheets to the TFP401 HDMI/DVI Decoder and the round lcd display
Anything is of help
LCD DATASHEET
TFP401 HDMI/DVI Decoder SCHEMATIC
TFP401 chip pinout/datasheet
 

KeithWalker

Joined Jul 10, 2017
605
My crystal ball is not working very well today.
You will have to give a few more clues if you really want anyone to help you.
Post a diagram of how you have everything connected.
Post a commented copy of the software you are using on the Raspberry Pi.
Post a detailed description of what the software is supposed to do.
Regards,
Keith
 

Thread Starter

Kyle M 1

Joined Feb 9, 2019
6
My crystal ball is not working very well today.
You will have to give a few more clues if you really want anyone to help you.
Post a diagram of how you have everything connected.
Post a commented copy of the software you are using on the Raspberry Pi.
Post a detailed description of what the software is supposed to do.
Regards,
Keith
OK here you go this is the best i have
PI is running standard rasberian OS
we are just trying to get the screen to display on the LCD right now
The image of the paper is the pin out corresponding pin are contented to the ones in the parentheses to the right side pins
9-CSX is currently connected to Ground
 

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KeithWalker

Joined Jul 10, 2017
605
OK here you go this is the best i have
PI is running standard rasberian OS
we are just trying to get the screen to display on the LCD right now
The image of the paper is the pin out corresponding pin are contented to the ones in the parentheses to the right side pins
9-CSX is currently connected to Ground
From the information you have given me so far, the problem could be cause by:
A bad connection
A wrong connection
A number of wrong connections
A broken wire
A bad display
A bad Raspberry PI
Corrupt operating system
Missing software drivers
Faulty software
Missing software
Incompatible devices
I could probably suggest a dozen more possibilities if I had the time.

The ball is now in your court.

Regards,
Keith
 
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