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TX7332: Apply Power to AVDD_IO ONLY?

Part Number: TX7332

We have a custom PCB using the TX7332 IC mated with a Xilinx Ultrascale+ processor. In protoyping, our +/-5 supply is causing issues with the boot sequence of our low voltage rails and we cannot test the Xilinx chip. One (temporary) solution is to disable our +/-5V supply, so we can get the boot sequence correct in order to test the Xilinx chip.

Our concern is:

Is it safe to have AVDD_IO (1.8V) applied to the chip but NOT +/-5V and +/-HVP?

Eventually, we will get the +/-5V supply fixed but we would like to verify operation of the Xilinx chip in the meantime.

Regards

Craig Lindholm