How to use GPIO as interrupt output on ADPD4001

I want using GPIO0 as interrupt X.

So I controlled registers as below. Is this the right control?

   - ADDR 0x0006(FIFO_TH) => FIFO_TH[7:0] = FIFO bytes size 1

   - ADDR 0x0014(INT_ENABLE_XD) => INTX_EN_FIFO_TH = 0x1 (enable)

   - ADDR 0x0023, GPIOOUT0[6:0] = 0x02 (Interrupt X)

   - ADDR 0x0022, GPIO_PIN_CFG0[2:0] = 0x03 (outputinverted)

When ADDR 0x0022, GPIO_PIN_CFG0[2:0] = 0x03 (outputinverted)

   - If interrupt X occurs, what is the polarity of the GPIO0?

   - If interrupt X occurs, can interrupt X occur again?

       => If it can happen again, will GPIO0 be toggled?