Atmel SAM4L Xplained Pro Starter Kit Atmel ATSAM4L-XSTK ATSAM4L-XSTK Data Sheet
Product codes
ATSAM4L-XSTK
906
42023E–SAM–07/2013
ATSAM4L8/L4/L2
33.7.2
Mode Register
Name:
MR
Access:
Read/Write
Offset:
0x04
Reset Value:
0x00000000
This register can only be written if the WPEN bit is cleared in Write Protect Mode Register.
• CLKDIV: Clock Divider for Internal Trigger
Trigger period is CLKDIV * APB clock period.
• STARTUP: Startup Time Selection
Starup time is (STARTUP + 1) * APB clock period.
• WORD: Word Transfer
• DACEN: DAC Enable
Writing a one to this bit enables the DAC.
Writing a zero to this bit disables the DAC.
• TRGSEL: Trigger Selection
• TRGEN: Trigger Enable
0: Internal trigger mode.
1: External trigger mode.
31
30
29
28
27
26
25
24
CLKDIV
23
22
21
20
19
18
17
16
CLKDIV
15
14
13
12
11
10
9
8
STARTUP
7
6
5
4
3
2
1
0
–
–
WORD
DACEN
TRGSEL
TRGEN
WORD
Selected Resolution
0
Half-Word transfer (16 bits)
1
Word Transfer (32 bits)
TRGSEL
Selected TRGSEL
0
0
0
external trigger
0
0
1
peripheral event
0
1
0
Reserved
0
1
1
Reserved
1
0
0
Reserved
1
0
1
Reserved
1
1
0
Reserved
1
1
1
Reserved