BQ35100EVM-795: BQ35100EVM NACK EV2400 by i2c

Part Number: BQ35100EVM-795
Other Parts Discussed in Thread: BQSTUDIO, BQ35100, EV2400

I use EV2400 adapter to connect BQ35100 EVM Board. On my PC, the bqstudio software detected EV2400 but cannot detect BQ35100 IC.

I measured the i2c waveform using oscilloscope. The master write 0xAA address,but the slave NACK. And I test the V_REG25 on the EVM board by multimeter, the voltage is normally +2.5V.

Is it possible the bq35100 IC is abnormal? How should I further investigate the problem?Thanks!!