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LM25066I: PMBus Address Lines

Part Number: LM25066I

The datasheet for the LM25066I indicates that valid PMBus addresses are set using a combination of 1,0, or Z on each of the address lines. For a high the datasheet indicates (connect to VDD), for a low (connect to GND), and for open (connect to GND). For "open" how can it be correct to these pins to GND? Shouldn't this be (float)?