Atmel XMEGA B, User Manual

Page: 356 / 415

356 XMEGA B [DATASHEET]
8291B–AVR–01/2013
Table 27-5. Window mode interrupt settings.

Bits 1:0 – WINTLVL[1:0]: Window Interrupt Enable
These bits enable the analog comparator window mode interrupt and select the interrupt level, as described in “Interrupts
and Programmable Multilevel Interrupt Controller” on page 101 . The enabled interrupt will trigger according to the
WINTMODE setting.
27.8.6 STATUS – Status register

Bits 7:6 – WSTATE[1:0]: Window Mode Current State
These bits show the current state of the signal if window mode is enabled according to Table 27-6 .
Table 27-6. Window mode current state.

Bit 5 – AC1STATE: Analog Comparator 1 Current State
This bit shows the current state of the output signal from AC1.

Bit 4 – AC0STATE: Analog Comparator 0 Current State
This bit shows the current state of the output signal fromAC0.

Bit 3 – Reserved
This bit is unused and reserved for future use. For compatibility with future devices, always write this bit to zero when this
register is written.

Bit 2 – WIF: Analog Comparator Window Interrupt Flag
This is the interrupt flag for the window mode. WIF is set according to the WINTMODE setting in the “WINCTRL –
Window Function Control register” on page 355 .
This flag is automatically cleared when the analog comparator window interrupt vector is executed. The flag can also be
cleared by writing a one to its bit location.

Bit 1 – AC1IF: Analog Comparator 1 Interrupt Flag
This is the interrupt flag for AC1. AC1IF is set according to the INTMODE setting in the corresponding “ACnCTRL –
Analog Comparator n Control register” on page 353 .
WINTMODE[1:0] Group Configuration Description
00 ABOVE Interrupt on signal above window
01 INSIDE Interrupt on signal inside window
10 BELOW Interrupt on signal below window
11 OUTSIDE Interrupt on signal outside window
Bit 7 6 5 4 3 2 1 0
+0x07
WSTATE[1:0] AC1STATE AC0STATE – WIF AC1IF AC0IF
Read/Write R/W R/W R/W R/W R R/W R/W R/W
Initial Value 0 0 0 0 0 0 0 0
WSTATE[1:0] Group Configuration Description
00 ABOVE Signal is above window
01 INSIDE Signal is inside window
10 BELOW Signal is below window
11 OUTSIDE Signa is outside window