Enhanced PWM (ePWM) Module
15.2.4.7 PWM-Chopper Submodule Register
The PWM-chopper control register (PCCTL) is shown in
and described in
Figure 15-96. PWM-Chopper Control Register (PCCTL)
15
11
10
8
7
5
4
1
0
Reserved
CHPDUTY
CHPFREQ
OSHTWTH
CHPEN
R-0
R/W-0
R/W-0
R/W-0
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 15-91. PWM-Chopper Control Register (PCCTL) Bit Descriptions
Bits
Name
Value
Description
15-11
Reserved
0
Reserved
10-8
CHPDUTY
0-7h
Chopping Clock Duty Cycle
0
Duty = 1/8 (12.5%)
1h
Duty = 2/8 (25.0%)
2h
Duty = 3/8 (37.5%)
3h
Duty = 4/8 (50.0%)
4h
Duty = 5/8 (62.5%)
5h
Duty = 6/8 (75.0%)
6h
Duty = 7/8 (87.5%)
7h
Reserved
7-5
CHPFREQ
0-7h
Chopping Clock Frequency
0
Divide by 1 (no prescale)
1h
Divide by 2
2h
Divide by 3
3h-7h
Divide by 4 to divide by 8
4-1
OSHTWTH
0-Fh
One-Shot Pulse Width
0
1 × SYSCLKOUT/8 wide
1h
2 × SYSCLKOUT/8 wide
2h
3 × SYSCLKOUT/8 wide
3h-Fh
4 × SYSCLKOUT/8 wide to 16 × SYSCLKOUT/8 wide
0
CHPEN
PWM-chopping Enable
0
Disable (bypass) PWM chopping function
1
Enable chopping function
15.2.4.8 High-Resolution PWM Submodule Registers
lists the memory-mapped registers for the high-resolution PWM submodule. All other register
offset addresses not listed in
should be considered as reserved locations and the register
contents should not be modified.
Table 15-92. High-Resolution PWM Submodule Registers
Offset
Acronym
Register Description
Section
4h
TBPHSHR
Time-Base Phase High-Resolution Register
10h
CMPAHR
Counter-Compare A High-Resolution Register
40h
HRCTL
HRPWM Control Register
1604
Pulse-Width Modulation Subsystem (PWMSS)
SPRUH73H – October 2011 – Revised April 2013
Copyright © 2011–2013, Texas Instruments Incorporated