Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet

Product codes
AT91SAM9N12-EK
Page of 1104
700
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
38.7.9  PWM Channel Mode Register
Name:
PWM_CMR[0..3]
Address:
0xF8034200 [0], 0xF8034220 [1], 0xF8034240 [2], 0xF8034260 [3]
Access:
Read/Write 
• CPRE: Channel Pre-scaler
Values which are not listed in the table must be considered as “reserved”.
• CALG: Channel Alignment
0 = The period is left aligned.
1 = The period is center aligned.
• CPOL: Channel Polarity
0 = The output waveform starts at a low level.
1 = The output waveform starts at a high level.
• CPD: Channel Update Period
0 = Writing to the PWM_CUPDx will modify the duty cycle at the next period start event.
1 = Writing to the PWM_CUPDx will modify the period at the next period start event.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
CPD
CPOL
CALG
7
6
5
4
3
2
1
0
CPRE
Value
Name
Description
0000
MCK 
Master Clock
0001
MCKDIV2
Master Clock divided by 2
0010
MCKDIV4
Master Clock divided by 4
0011
MCKDIV8
Master Clock divided by 8
0100
MCKDIV16
Master Clock divided by 16
0101
MCKDIV32
Master Clock divided by 32
0110
MCKDIV64
Master Clock divided by 64
0111
MCKDIV128
Master Clock divided by 128
1000
MCKDIV256
Master Clock divided by 256
1001
MCKDIV512
Master Clock divided by 512
1010
MCKDIV1024
Master Clock divided by 1024
1011
CLKA
Clock A
1100
CLKB
Clock B