TM4C123BH6PZ Datasheet, PDF (1173/1311 Pages) Texas Instruments – Tiva TM4C123BH6PZ Microcontroller

Tiva^™ TM4C123BH6PZ Microcontroller
Register 28: PWM0 Load (PWM0LOAD), offset 0x050
Register 29: PWM1 Load (PWM1LOAD), offset 0x090
Register 30: PWM2 Load (PWM2LOAD), offset 0x0D0
Register 31: PWM3 Load (PWM3LOAD), offset 0x110
These registers contain the load value for the PWM counter (PWM0LOAD controls the PWM
generator 0 block, and so on). Based on the counter mode configured by the MODE bit in the
PWMnCTL register, this value is either loaded into the counter after it reaches zero or is the limit
of up-counting after which the counter decrements back to zero. When this value matches the
counter, a pulse is output which can be configured to drive the generation of the pwmA and/or pwmB
signal (via the PWMnGENA/PWMnGENB register) or drive an interruptor ADC trigger (via the
PWMnINTEN register).
If the Load Value Update mode is locally synchronized (based on the LOADUPD field encoding in
the PWMnCTL register), the 16-bit LOAD value is used the next time the counter reaches zero. If
the update mode is globally synchronized, it 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 1136). If this register is re-written before the actual update occurs, the previous value is
never used and is lost.
PWMn Load (PWMnLOAD)
PWM0 base: 0x4002.8000
PWM1 base: 0x4002.9000
Offset 0x050
Type RW, reset 0x0000.0000
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
reserved
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
LOAD
Type RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit/Field
31:16
15:0
Name
reserved
LOAD
Type
RO
RW
Reset
0x0000
0x0000
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.
Counter Load Value
The counter load value.
June 12, 2014
Texas Instruments-Production Data
1173