While going through datasheet of IS31FL3235 (LED driver), I came across this:
So there is AD pin which when connected to GND, VCC, SCL and SDA gives four possible i2c addresses, thereby allowing me to use four ICs on same i2c line.
Connecting to GND and VCC makes sense to me. How does it work with SCL and SDA? When there is no transaction on i2c lines, SCL and SDA will be pulled up thereby making them same as VCC. How will the chip differentiate between SCL, SDA and VCC?