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8331B–AVR–03/12
Atmel AVR XMEGA AU
4.17.32 DACB1OFFCAL – DACB Offset Calibration register
• Bit 7:0 – DACB1OFFCAL[7:0]: DACB1 Offset Calibration Byte
This byte contains the offset calibration value for channel 1 in the digital to analog converter B
(DACB). Calibration is done during production test of the device. The calibration byte is not
loaded automatically into the DAC channel 1 offset calibration register, so this must be done
from software.
4.17.33 DACB1GAINCAL – DACB Gain Calibration register
• Bit 7:0 – DACB1GAINCAL[7:0]: DACB1 Gain Calibration Byte
This byte contains the gain calibration value for channel 1 in the digital to analog converter B
(DACB). Calibration is done during production test of the device. The calibration byte is not
loaded automatically into the DAC channel 1 gain calibration register, so this must be done from
software.
4.18 Register Description – General Purpose I/O Memory
4.18.1 GPIORn – General Purpose I/O register n
These are general purpose register that can be used to store data such as global variables and
flags in the bit-accessible I/O memory space.
4.19 Register Description – External Memory
Refer to ”EBI – External Bus Interface” on page 335.
Bit 7654 3 2 1 0
+0x36 DACB1OFFCAL[7:0] DACB1OFFCAL
Read/Write R R R R R R R R
Initial Value 0 0 0 0 x x x x
Bit 76543 210
+0x37 DACB1GAINCAL[7:0] DACB1GAINCAL
Read/Write R R R R R R R R
Initial Value 0 0 0 0 x x x x
Bit 76543210
+n GPIORn[7:0] GPIORn
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