hdmi-edid-debug-board

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HDMI EDID Debug Board

Overview

This project contains PCB design files for a board that allows to intercept, inject and replace EDID profile advertised to HDMI video source. The board can be used for debugging, integration, troubleshooting of advanced video systems that utilize HDMI as video transmission standard.

The PCB design files were prepared in KiCad 8.x.

Key features

HDMI passthrough
- LVDS, CEC, HPD, UTIL and 5V are passed through the board
- I2C connection can be changed by selector configuration
LED indicators
- HPD
HDMI power
- USB power
- EEPROM power
EDID Selectors (goldpins with jumpers / slide switches)
- HDMI Source I2C can be connected to HDMI Sink, EEPROM or disconnected
- FTDI I2C and QWIIC Connector can be connected to HDMI Sink, EEPROM or disconnected
EDID EEPROM
- 2kb
- Default 7-bit I2C address: 0x50
USB-C Connector and on-board USB-to-I2C bridge (FTDI FT4232H-56Q)
- Can be used to dump data from the HDMI sink or upload it to the on-board EEPROM
Power Mux
- EDID EEPROM can be powered either from HDMI source or USB-C

Project structure

The main directory contains KiCad PCB project files, a LICENSE and a README. The remaining files are stored in the following directories:

doc - contains board schematics in PDF format
img - contains graphics for this README

Licensing

This project is published under the Apache-2.0 license.

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HDMI EDID Debug Board

Overview

The PCB design files were prepared in KiCad 8.x.

Key features

HDMI passthrough

LVDS, CEC, HPD, UTIL and 5V are passed through the board
I2C connection can be changed by selector configuration

LED indicators

HDMI power

USB power
EEPROM power

EDID Selectors (goldpins with jumpers / slide switches)

HDMI Source I2C can be connected to HDMI Sink, EEPROM or disconnected
FTDI I2C and QWIIC Connector can be connected to HDMI Sink, EEPROM or disconnected

EDID EEPROM

2kb
Default 7-bit I2C address: 0x50

USB-C Connector and on-board USB-to-I2C bridge (FTDI FT4232H-56Q)

Can be used to dump data from the HDMI sink or upload it to the on-board EEPROM

Power Mux

EDID EEPROM can be powered either from HDMI source or USB-C

Project structure

The main directory contains KiCad PCB project files, a LICENSE and a README. The remaining files are stored in the following directories:

doc - contains board schematics in PDF format

img - contains graphics for this README

Licensing

This project is published under the Apache-2.0 license.

hdmi-edid-debug-board

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