Atmel AVR XMEGA D Series, Manual, Page: 276 / 331

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8210C–AVR–09/11
Atmel AVR XMEGA D
22.8.3 CTRLA – Control register A
• Bit 7:2 – Reserved
These bits are unused and reserved for future use. For compatibility with future devices, always
write these bits to zero when this register is written.
• Bit 1 – AC1OUT: Analog Comparator 1 Output
Setting this bit makes the output of AC1 available on pin 6 of the port.
• Bit 0 – AC0OUT: Analog Comparator 0 Output
Setting this bit makes the output of AC0 available on pin 7 of the port.
22.8.4 CTRLB – Control register B
• Bit 7:6 – Reserved
These bits are unused and reserved for future use. For compatibility with future devices, always
write these bits to zero when this register is written.
• Bit 5:0 – SCALEFAC[5:0]: Voltage Scaling Factor
These bits define the scaling factor for the Vcc voltage scaler. The input to the analog compara-
tor, V
SCALE
, is:
22.8.5 WINCTRL – Window Function Control register
• Bit 7:5 – Reserved
These bits are unused and reserved for future use. For compatibility with future devices, always
write these bits to zero when this register is written.
• Bit 4 – WEN: Window Mode Enable
Setting this bit enables the analog comparator window mode.
Bit 7 6 5 4 3 2 1 0
+0x04 – – – – – – AC1OUT AC0OUT CTRLA
Read/Write R R R R R R R/W R/W
Initial Value 0 0 0 0 0 0 0 0
Bit 7 6 5 4 3 2 1 0
+0x05 – – SCALEFAC[5:0] CTRLB
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
V
SCALE
V
CC
SCALEFAC
1
+
( ) ⋅
64
------------------------------------------------------------- =
Bit 7 6 5 4 3 2 1 0
+0x06 – – – WEN WINTMODE[1:0] WINTLVL[1:0] WINCTRL
Read/Write R R R R/W R/W R/W R/W R/W
Initial Value 0 0 0 0 0 0 0 0