ADSP-BF523 Power Supply Failure

Hi,

i have a Problem with the ADSP-BF523 that the 1V2 are causing an short circuit to the power supply.

I am using an external 3v3, 2v5 and 1v2 power supply.

Can you provide me an hint, what event can damage the dsp to show such a failure.

Thanks

Bernhard