46
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
”EBI – External Bus Interface” on page 335
Bit
7
6
5
4
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
7
6
5
4
3
2
1
0
+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
7
6
5
4
3
2
1
0
+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
