LTC4011 /READY line usate...

In our product we are powering the system from the LTC4011 as well as using the LTC4011 to charge the NiMH batteries.

We need a quick way to determine if we are powered from external voltage or the internal NiMH.

I believe that when the /READY line is active (LOW) that would indicate that the system is being powered from external power.

If the /READY line is inactive (HIGH) the system is powered from the internal batteries.

Is this a correct assumption?