ADS7128: ADDR configuration

Part Number: ADS7128

Regarding ADDR pin, it looks that R1 & R2 register must be set between DECUP pin and GND.

 

Specifications describes so, but on the other hand, the following eva board schematics connect  AVDD & AGND. In this eva board, R1 & R2 are open.

BP-ADS7128 BoosterPack™ Plug-In Module

 

Which is correct?