Atmel AVR XMEGA AU series

26
8331B–AVR–03/12
Atmel AVR XMEGA AU
4.15 Register Description – NVM Controller
4.15.1 ADDR0 – Address register 0
The ADDR0, ADDR1, and ADDR2 registers represent the 24-bit value ADDR. This is used for
addressing all NVM sections for read, write, and CRC operations.
• Bit 7:0 – ADDR[7:0]: Address Register Byte 0
This register gives the address low byte when accessing NVM locations.
4.15.2 ADDR1 – Address register 1
• Bit 7:0 – ADDR[15:8]: Address Register Byte 1
This register gives the address high byte when accessing NVM locations.
4.15.3 ADDR2 – Address register 2
• Bit 7:0 – ADDR[23:16]: Address Register Byte 2
This register gives the address extended byte when accessing NVM locations.
4.15.4 DATA0 – Data register 0
The DATA0, DATA1, and DATA registers represent the 24-bit value DATA. This holds data dur-
ing NVM read, write, and CRC access.
• Bit 7:0 – DATA[7:0]: Data Register Byte 0
This register gives the data value byte 0 when accessing NVM locations.
Bit 76543210
+0x00 ADDR[7:0] ADDR0
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial Value 1 1 1 1 1 1 1 1
Bit 76543210
+0x01 ADDR[15:8] ADDR1
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial Value 0 0 0 0 0 0 0 0
Bit 76543210
+0x02 ADDR[23:16] ADDR2
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial Value 0 0 0 0 0 0 0 0
Bit 76543210
+0x04 DATA[7:0] DATA0
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial Value 0 0 0 0 0 0 0 0