285
8331B–AVR–03/12
Atmel AVR XMEGA AU
mask bit is one, the address match between the incoming address bit and the corresponding bit
in ADDR is ignored; i.e., masked bits will always match.
If ADDREN is set to one, ADDRMASK can be loaded with a second slave address in addition to
the ADDR register. In this mode, the slave will match on two unique addresses, one in ADDR
and the other in ADDRMASK.
•Bit 0
– ADDREN: Address Enable
By default, this bit is zero, and the ADDRMASK bits acts as an address mask to the ADDR reg-
ister. If this bit is set to one, the slave address match logic responds to the two unique addresses
in ADDR and ADDRMASK.
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