We are custmizing design based on TDA4EVM, and we need MCU_I2C0_SCL to work in High Speed mode at about 1Mbps.
according to the datasheet of TDA4VM, it has to be IN 1.8V MODE when in High speed mode. But the MCU_I2C0 on EVM is designed to be in 3.3V MODE.
I2C ports are usually designed to be OPEN DRAIN PORT, so the pull up should be changed to 1.8V
what I am asking is:
Do I need to change the supply of VDDSHV0_MCU from 3.3V to 1.8V?
if no needed , I don't need change design about the port related VDDSHV0_MCU.
if needed, too many thing should be checked and changed because the power supply changing.
Thanks
Best regards
Yantao
