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DS90UB914A-Q1: DS90UB913A-DS90UB914A :Can not I2C communicate at BIST mode

Part Number: DS90UB914A-Q1

Dear support team;

I use 913A-EVM and 914A-EVM.

After the following sequence , I2C communication locked.

- Operation mode is PCLK mode.

- There is no clock at PCLK pin.

1st step : BISTEN = 0

   I can have access to DS90UB913A via I2C.

2nd step : BISTEN = 1

   I cannot have access to DS90UB913A via I2C.

   LOCK pin is 0.

3rd step : BISTEN = 0

   I cannot have access to DS90UB913A via I2C.

I tried BIST mode via pin and register, but there are same status.

Is this state correct ?

Best Regards,

 M.Sugiyama