LM3S316-IQN25 Luminary Micro, Inc., LM3S316-IQN25 Datasheet - Page 370

• Manufacturer Part Number: LM3S316-IQN25
• Description: Microcontroller
• Manufacturer: Luminary Micro, Inc.

Pulse Width Modulator (PWM)
370
Reset
Reset
Type
Type
Bit/Field
31:16
15:0
PWMn Compare B (PWMnCMPB)
R/W
RO
31
15
0
0
Register 24: PWM0 Compare B (PWM0CMPB), offset 0x05C
Register 25: PWM1 Compare B (PWM1CMPB), offset 0x09C
These registers contain a value to be compared against the counter (PWM0CMPB controls the
PWM generator 0 block, and so on). When this value matches the counter, a pulse is output; this
can drive the generation of a PWM signal (via the PWMnGENA/PWMnGENB registers) or drive
an interrupt or ADC trigger (via the PWMnINTEN register). If the value of this register is greater
than the PWMnLOAD register, then no pulse is ever output.
For comparator B, if the update mode is immediate (based on the CmpBUpd bit in the PWMnCTL
register), then this 16-bit CompB value is used the next time the counter reaches zero after a
synchronous update has been requested through the PWM Master Control (PWMCTL) register
(see page 352). If this register is rewritten before the actual update occurs, the previous value is
never used and is lost.
R/W
RO
30
14
0
0
reserved
CompB
Name
R/W
RO
29
13
0
0
R/W
RO
28
12
0
0
Type
R/W
R/W
RO
RO
27
11
0
0
R/W
RO
26
10
0
0
Reset
R/W
RO
25
0
9
0
0
0
Preliminary
R/W
RO
24
0
8
0
reserved
CompB
Description
Reserved bits return an indeterminate value, and should
never be changed.
The value to be compared against the counter.
R/W
RO
23
0
7
0
R/W
RO
22
0
6
0
R/W
RO
21
0
5
0
R/W
RO
20
0
4
0
R/W
RO
19
0
3
0
R/W
RO
18
0
2
0
October 8, 2006
R/W
RO
17
0
1
0
R/W
RO
16
0
0
0