Does it needed to wait after software reset to writing new value ?
If it does, How long is the interval?
Looking at the timing diagram (Figure 4) in the data sheet, the output will start to respond to the reset pin(hardware reset) being pulsed after 150 ns. It would make sense if that would be the minimum wait time in software reset as well before writing again to the part. Let me check with the eval reports and will get back to you the soonest.