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BQ25970: Standalone mode doesn't work

Part Number: BQ25970

Hello Sr, 

As caption I made a standalone board used your chip BQ25970,however there is no charge current deliver out to Battery,even if  rise up charge input to 9Vdc,and I printed related register's values and it reminds me 6 incorrect status as below,pls kindly give me some tips for further analysis,Thanks!

1:VBUS is too low for converter to start ,I certainly confirm input up to 9Vdc.

2:VBATREG active status is not active.

3:CONV switching start is not switching.

4:ADC conversion done status incomplete

5:ADC conversion done flag is incomplete.

6:IBATREG Active status is not active.

I double checked HW design,there no incorrections on peripheral circuit base on your technical information.

Best regards!