I made the circuit whose diagram is given on page 4 of the document in the link.
I am applying 9.1v to the circuit.
I can't get acknowledge to 0x88 address that I sent after start.
https://www.st.com/resource/en/datasheet/tda7440.pdf
I'm sure about the software part because, for example, if I send the address to the I2C oled display, I can receive an acknowledge.
Do you have any opinions about the acknowledgment problem? I think that the document belonging to Chip is very inadequate.
