The RF430CL330 datasheet describes the INT0 drive as follows:
"Interrupt Output pin INTO Configuration
0b = Pin is Hi-Z if there is no pending interrupt. Application provides an external pullup
resistor if bit 3 (INTO Active High) = 0. Application provides an external pulldown
resistor if bit 3 (INTO Active High) = 1.
1b = Pin is actively driven high or low if there is no pending interrupt. It is driven high if
bit 3 (INTO Active High) = 0. It is driven low if bit 3 (INTO Active High) = 1."
What I am missing in this text is what happens when there is a pending interrupt. I assume the following:
0b: if there is an interrupt pending, the pin is driven according to the setting of bit 3.
1b: if there is an interrupt pending, the pin is hi-Z.
If someone could confirm this, or explain the actual behaviour, it would be greatly appreciated.