Atmel Evaluation Kit for the SAM4E Series of Flash Microcontrollers ATSAM4E-EK ATSAM4E-EK Scheda Tecnica
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ATSAM4E-EK
1101
SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
40.7.50 PWM Channel Additional Edge Update Register
Name:
PWM_CAEUPDx [x=0..3]
Address:
0x40000408 [0], 0x40000428 [1], 0x40000448 [2], 0x40000468 [3]
Access:
Write-only
This register acts as a double buffer for the ADEDGV and ADEDGM values. This prevents an unexpected waveform when
modifying the additional edge value and the additional edge mode.
modifying the additional edge value and the additional edge mode.
Only the first 16 bits (channel counter size) are significant.
ADEDGVUP: Channel Additional Edge Value Update
Defines the timing of the additional edge. After writing this register, the channel polarity is inverted when the channel coun-
ter reaches the value defined by this field, that leads to an additional edge of the channel output waveform. This value must
be defined between 0 and CPRD (PWM_CPRx). The additional edge occurs only one time after writing this register.
ter reaches the value defined by this field, that leads to an additional edge of the channel output waveform. This value must
be defined between 0 and CPRD (PWM_CPRx). The additional edge occurs only one time after writing this register.
ADEDGMUP: Channel Additional Edge Mode Update
Note: This field is useless if the counter of the channel x is left aligned (CALG = 0 in
)
31
30
29
28
27
26
25
24
–
–
–
–
–
–
ADEDGMUP
23
22
21
20
19
18
17
16
ADEDGVUP
15
14
13
12
11
10
9
8
ADEDGVUP
7
6
5
4
3
2
1
0
ADEDGVUP
Value
Name
Description
0
INC
The additional edge of the channel x output waveform occurs when CCNTx reaches ADEDGVUP
and the counter of the channel x is incrementing.
and the counter of the channel x is incrementing.
1
DEC
The additional edge of the channel x output waveform occurs when CCNTx reaches ADEDGVUP
and the counter of the channel x is incrementing.
and the counter of the channel x is incrementing.
2
BOTH
The additional edge of the channel x output waveform occurs when CCNTx reaches ADEDGVUP,
whether the counter is incrementing or not.
whether the counter is incrementing or not.
3
–
Reserved