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Are these registers two address of a I2C slave or OAR2 is a mask of OAR1?Mean:address slave = OAR1 AND OAR2. Ex. OAR1 = 0xE0 OAR2 = 0xF0. (OAR1 AND OAR2) are 8 address 0xE0,0xE2 .. 0XEE . Thank you Marco