We would like to read and write internal resister of ADV7625 through RS232C,
but I do not know how to do it.
Please let me know your advice
Connect to the board with a serial cable, set the terminal emulator to 115kBaud, 8bit, no parity. When you reboot the board it should display version information. At the prompt type 'help' to get the help menu, several of the lines will show you how to access the internal registers. If memory serves me right the command would be something like 'rdi2c 64 04' which would read the device at 0x64, register 0x04
The command is "i2cr" for performing I2C Read and "i2cw" for performing I2C write.
As you said, if they type "help" or "?", then it will display command list.
Retrieving data ...