What's the voltage of PEX_L5_RST_N(H10)

In datasheet,PEX_L5_RST_N’s voltage is 1.8V
In OEM product design guide,4.7K pullup to VDDIO_AO_3V3
Which is correct?

PEX_L5_RST_N’s voltage is 3.3V
It is open drain with external 4.7Kohm pull up on module.