Just would like to clarify.
1. Do we leverage GPIO high/low state to set device address?
2. Which GPIO state is MSB for address? for example, if [GPIO1,GPIO2,GPIO3,GPIO4] state is [1,1,0,0], the address is 0xC or 0x3?
3. Do we have internal pull-up or pull-down for GPIO? The question is what's the GPIO state when it's float?
4. If we need to pull-up or pull-down for GPIO, what's the recommend pull-up or pull-down resistor value?
