Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD 数据表

32072H–AVR32–10/2012

OSCCTRL32

Read/Write

0x30

0x00000000

Select startup time for 32 KHz oscillator 

Note: This register is only reset by Power-On Reset

Choose between crystal, or external clock

0: External clock connected on XIN32, XOUT32 can be used as a I/O (no crystal)

1: Crystal is connected to XIN32/XOUT32 - Oscillator is used with automatic gain control

2 to 7: Reserved 

0: 32 KHz Oscillator is disabled 

1: 32 KHz Oscillator is enabled

31

30

29

28

27

26

25

24

-

-

-

-

-

-

-

-

23

22

21

20

19

18

17

16

-

-

-

-

-

STARTUP

15

14

13

12

11

10

9

8

-

-

-

-

-

MODE

7

6

5

4

3

2

1

0

-

-

-

-

-

-

-

OSC32EN