LM3S5762 Datasheet, PDF (738/841 Pages) Texas Instruments – Stellaris® LM3S5762 Microcontroller

Pulse Width Modulator (PWM)
Register 10: PWM0 Control (PWM0CTL), offset 0x040
Register 11: PWM1 Control (PWM1CTL), offset 0x080
Register 12: PWM2 Control (PWM2CTL), offset 0x0C0
These registers configure the PWM signal generation blocks (PWM0CTL controls the PWM generator
0 block, and so on). The Register Update mode, Debug mode, Counting mode, and Block Enable
mode are all controlled via these registers. The blocks produce the PWM signals, which can be
either two independent PWM signals (from the same counter), or a paired set of PWM signals with
dead-band delays added.
The PWM0 block produces the PWM0 and PWM1 outputs, the PWM1 block produces the PWM2 and
PWM3 outputs, and the PWM2 block produces the PWM4 and PWM5 outputs.
PWM0 Control (PWM0CTL)
Base 0x4002.8000
Offset 0x040
Type R/W, reset 0x0000.0000
31
30
29
28
Type RO
RO
Reset
0
0
Type
Reset
15
14
DBFallUpd
R/W
R/W
0
0
RO
RO
0
0
13
12
DBRiseUpd
R/W
R/W
0
0
27
26
RO
RO
0
0
11
10
DBCtlUpd
R/W
R/W
0
0
25
24
23
22
21
20
19
18
reserved
RO
RO
RO
RO
RO
RO
RO
RO
0
0
0
0
0
0
0
0
9
8
GenBUpd
R/W
R/W
0
0
7
6
5
4
3
2
GenAUpd
CmpBUpd CmpAUpd LoadUpd Debug
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
17
RO
0
1
Mode
R/W
0
16
RO
0
0
Enable
R/W
0
Bit/Field
31:16
15:14
Name
reserved
DBFallUpd
Type
RO
R/W
Reset
0x00
0
Description
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
PWMnDBFALL Update Mode
Specifies the update mode for the PWMnDBFALL register.
Value Description
0 Immediate
The PWMnDBFALL register value is immediately updated on
a write.
1 Reserved
2 Locally Synchronized
Updates to the register are reflected to the generator the next
time the counter is 0.
3 Globally Synchronized
Updates to the register are delayed until the next time the
counter is 0 after a synchronous update has been requested
through the PWM Master Control (PWMCTL) register.
738
November 17, 2011
Texas Instruments-Production Data