Hello,
Lets say I wanted to configure the ADDR pin as mid-level for use of I2C pins as GPIO.
Then all I need to do is leave the ADDR unconnected.
The TUSB320 samples the voltage on the ADDR after it detects a valid level on EN_N pin.
At this point there is a pull up and pull down enabled on the ADDR pin.
The idea is that the voltage on the pin will "float" somewhere between VDD and GND according to the potential divider formed by the Pull up and pull down.
After the ADDR pin is sampled, the pull up and pull down are disabled - presumably to save power.
Therefore if the pin is floating then the voltage sampled at the pin should be PD/(PU+PD)*VDD = 1.1M/(1.1M+588k)*VDD = 0.65*VDD
But the datasheet states that to detect a valid mid-level state the ADDR pin voltage has to be between 0.28*VDD and 0.56*VDD
This makes no sense!
There must be a mistake in this table.
What is the correct data?
