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TCAL6416: IO expansion chip

Part Number: TCAL6416

Tool/software:

Is there any difference in the I2C communication of TCAL6416 compared to others? Why is my host unable to communicate with it? I have connected the RESET pin to high level and the ADDR pin to GND. VDD(I2C-bus) and VDDP are connected to the same 3.3V. The slave address is set to 0x40, but the slave never generates an ACK signal. I can ensure that my I2C host has no problem as it communicates normally with other slaves.Do you have any reference code for TCAL6416?